PURPOSE: This rule establishes the minimum requirements for the content of annual reports that community water systems must deliver to their customers. These reports must contain information on the quality of the water delivered by the systems and characterize the risks (if any) from exposure to contaminants detected in the drinking water in an accurate and understandable manner.

1. (1) Applicability, Definitions, and General Requirements.

   1. (A) This rule applies only to community water systems.

   2. (B) The definitions in 10 CSR 60-2.015 apply to this rule with the following exceptions:

      1. 1. For the purpose of this rule, cus-

tomers are defined as billing units or service connections to which water is delivered by a community water system; and

1. 2. For the purpose of this rule, detected

means at or above the levels prescribed by 10 CSR 60-5.010(8) for organic, inorganic, and radioactive contaminants and disinfection byproducts.

1. (C) Each existing community water system must deliver its report to customers by July 1 annually. The report must contain data collected during, or prior to, the previous calendar year as prescribed in paragraph (2)(D)3. of this rule.
2. (D) A new community water system must deliver its first report to customers by July 1 of the year after its first full calendar year in operation and annually thereafter.
3. (E) A community water system that sells water to another community water system must deliver to the purchasing water system the information required in subsection (2)(B), and any information required in subsections (2)(D) through (2)(G) of this rule for monitoring conducted at the source or entrypoint to the distribution system. The required information from the seller must be provided no later than April 1 annually or on a date mutually agreed upon by the seller and the purchaser that is documented in writing and signed by both parties.

1. (2) Content of the Reports.

   1. (A) Each community water system must provide to its customers an annual report that contains the information specified in section

2. (2) and section (3) of this rule.

   1. (B) Information on the source of the water delivered—

      1. 1. Each report must identify the

source(s) of the water delivered by the community water system by providing information on—

1. A. The type of the water: e.g., sur-

face water, ground water;

1. B. The commonly used name (if any)

and location of the body (or bodies) of water; and

1. C. If a source water assessment has

been completed, the report must notify consumers of the availability of this information and the means to obtain it, and also include a brief summary of the system’s susceptibility to potential sources of contamination, using language provided in the source water assessment or written by the operator. If no source water assessment has been completed, systems are encouraged to highlight in the report significant sources of contamination in the source water area if they have readily available information.

1. 2. Reserved

2. (C) Definitions.

   1. 1. Each report must include the follow-

ing definitions:

1. A. Maximum contaminant level goal

or MCLG—The level of a contaminant in drinking water below which there is no known or expected risk to health. MCLGs allow for a margin of safety; and

1. B. Maximum contaminant level or

MCL—The highest level of a contaminant that is allowed in drinking water. MCLs are set as close to the MCLGs as feasible using the best available treatment technology.

1. 2. A report for a community water sys-

tem operating under a variance or an exemption issued under 10 CSR 60-6.010 or 10 CSR 60-6.020 must include the following definition—Variances and exemptions—State permission not to meet an MCL or a treatment technique under certain conditions.

1. 3. A report that contains data on a con-

taminant that the department regulates using the following terms must use the following definitions as applicable:

1. A. Treatment technique—A required

process intended to reduce the level of a contaminant in drinking water;

1. B. Action level—The concentration of

a contaminant which, if exceeded, triggers treatment or other requirements with which a water system must comply;

1. C. Maximum residual disinfectant

level goal or MRDLG—The level of a drinking water disinfectant below which there is no known or expected risk to health. MRDLGs do not reflect the benefits of the use of disinfectants to control microbial contaminants; and

1. D. Maximum residual disinfectant

level or MRDL—The highest level of a disinfectant allowed in drinking water. There is convincing evidence that addition of a disinfectant is necessary for control of microbial contaminants.

1. (D) Information on Detected Contaminants.

   1. 1. Subsection (2)(D) specifies the

requirements for information to be included in each report for contaminants subject to mandatory monitoring (except Cryptosporidium). It applies to—

1. A. Contaminants subject to an MCL,

action level, maximum residual disinfectant level, or treatment technique (regulated contaminants);

1. B. Contaminants for which monitor-

ing is required by 10 CSR 60-4.110 (unregulated contaminants); and

1. C. Disinfection by-products or micro-

bial contaminants for which monitoring is required by 40 CFR 141.142 and 141.143, except as provided under paragraph (2)(E)1. of this rule, and which are detected in the finished water.

1. 2. The data relating to these contami-

nants must be displayed in one (1) table or in several adjacent tables. Any additional monitoring results which a community water system chooses to include in its report must be displayed separately. 10 CSR 60-8

1. 3. The data must be derived from data

collected to comply with the Environmental Protection Agency and department monitoring and analytical requirements during the previous calendar year except that—

1. A. Where a system is allowed to mon-

itor for regulated contaminants less often than once a year, the table(s) must include the date and results of the most recent sampling and the report must include a brief statement indicating that the data presented in the report are from the most recent testing done in accordance with the regulations. The system may use the following language or similar language for their statement: “The state has reduced monitoring requirements for certain contaminants to less often than once per year because the concentrations of these contaminants are not expected to vary significantly from year-to-year. Some of our data (e.g., for organic contaminants), though representative, is more than one (1) year old.” No data older than five (5) years need be included.

1. B. Results of monitoring in compli-

ance with 40 CFR 141.142 and 141.143 need only be included for five (5) years from the date of last sample or until any of the detected contaminants becomes regulated and subject to routine monitoring requirements, whichever comes first.

1. 4. For detected regulated contaminants

(listed in Appendix A, included herein), the table(s) must contain—

1. A. The MCL for that contaminant

expressed as a number equal to or greater than 1.0 (as provided in Appendix A, included herein);

1. B. The MCLG for that contaminant

expressed in the same units as the MCL;

1. C. If there is no MCL for a detected

contaminant, the table must indicate that there is a treatment technique, or specify the action level applicable to that contaminant, and the report must include the definitions for treatment technique and/or action level, as appropriate, specified in paragraph (2)(C)3. of this rule;

1. D. For contaminants subject to an

MCL, except turbidity and total coliforms, the highest contaminant level used to determine compliance with 10 CSR 60-4.030; 10 CSR 60-4.040; 10 CSR 60-4.060; 10 CSR 60-4.090; 10 CSR 60-4.100 and the range of detected levels, as follows (when rounding of results to determine compliance with the MCL is allowed by the regulations, rounding should be done prior to multiplying the results by the factor listed in Appendix A, included herein):

1. (I) When compliance with the

MCL is determined annually or less frequently—the highest detected level at any sampling point and the range of detected levels expressed in the same units as the MCL;

1. (II) When compliance with the

MCL is determined by calculating a running annual average of all samples taken at a monitoring location—the highest average of any of the monitoring locations and the range of all monitoring locations expressed in the same units as the MCL. For the MCLs for total trihalomethanes (TTHM) and haloacetic acids 5 (HAA5) in 10 CSR 60-4.090(1)(D), systems must include the highest locational running annual average for TTHM and HAA5 and the range of individual sample results for all monitoring locations expressed in the same units as the MCL. If more than one (1) location exceeds the TTHM or HAA5 MCL, the system must include the locational running annual averages for all locations that exceed the MCL; and

1. (III) When compliance with the

MCL is determined on a system-wide basis by calculating a running annual average of all samples at all monitoring locations—the average and range of detection expressed in the same units as the MCL. The system is required to include individual sample results for the Initial Distribution System Evaluation (IDSE) conducted under 10 CSR 60-4.092 when determining the range of TTHM and HAA5 results to be reported in the annual consumer confidence report for the calendar year that the IDSE samples were taken;

1. E. For turbidity, the highest single

measurement and the lowest monthly percentage of samples meeting the turbidity limits specified in 10 CSR 60-4.050.

1. (I) The report should include an

explanation of the reasons for measuring turbidity, such as: “Turbidity is a measure of the cloudiness of water. We monitor turbidity because it is a good indicator of the effectiveness of our filtration system.”

1. (II) If an explanation of the reasons

for measuring turbidity is included, it does not have to be included in the table but may be added as a footnote or narrative associated with the table;

1. F. For lead and copper, the ninetieth

percentile value of the most recent round of sampling, the number of sampling sites exceeding the action level in that round, and the most recent source water results;

1. G. For total coliform.

   1. (I) The highest monthly number of

positive compliance samples for systems collecting fewer than forty (40) samples per month; or

1. (II) The highest monthly percent-

age of positive compliance samples for systems collecting at least forty (40) samples per month;

1. H. For fecal coliform or E. coli, the

total number of positive compliance samples; and

1. I. The likely source(s) of detected

regulated contaminants to the best of the operator’s knowledge. Specific information regarding contaminants may be available in sanitary surveys and source water assessments, and should be used when available to the operator. If the operator lacks specific information on the likely source, the report must include one (1) or more of the typical sources for that contaminant which are most applicable to the system. The typical sources for a given contaminant are listed in Appendix B, included herein.

1. 5. If a community water system dis-

tributes water to its customers from multiple hydraulically independent distribution systems that are fed by different raw water sources, the table should contain a separate column for each service area and the report should identify each separate distribution system. Alternatively, systems could produce separate reports tailored to include data for each service area.

1. 6. The table(s) must clearly identify any

data indicating violations of MCLs or treatment techniques and the report must contain a clear and readily understandable explanation of the violation including: the length of the violation, the potential adverse health effects, and actions taken by the system to address the violation. To describe the potential health effects, the system must use the relevant language of Appendix C, included herein.

1. 7. For detected unregulated contami-

nants for which monitoring is required (except Cryptosporidium), the table(s) must contain the average and range at which the contaminant was detected. When detects of unregulated contaminants are reported, the report may include a brief explanation of the reasons for monitoring for unregulated contaminants using language such as: “Unregulated contaminants are those for which EPA has not established drinking water standards. The purpose of unregulated contaminant monitoring is to assist EPA in determining the occurrence of unregulated contaminants in drinking water and whether future regulation is warranted. Information on all the contaminants that were monitored for, whether regulated or unregulated, can be obtained from this water system or the Department of Natural Resources.”

1. (E) Information on Cryptosporidium, Radon, and other Contaminants.

   1. 1. If the system has performed any mon-

itoring for Cryptosporidium, including monitoring performed to satisfy the requirements of 40 CFR 141.143, which indicates that Cryptosporidium may be present in the source water or the finished water, the report must include:

1. A. A summary of the results of the

monitoring; and

1. B. An explanation of the significance

of the results. The system may use the following language or similar language for the explanation: “Cryptosporidium is a microbial parasite which is found in surface water throughout the U.S. Although Cryptosporidium can be removed by filtration, the most commonly used filtration methods can not guarantee one hundred percent (100%) removal. Monitoring of our source water and/or finished water indicates the presence of these organisms. Current test methods do not enable us to determine if these organisms are dead or if they are capable of causing disease. Symptoms of infection include nausea, diarrhea, and abdominal cramps. Most healthy individuals are able to overcome the disease within a few weeks. However, immuno-compromised people have more difficulty and are at greater risk of developing severe, life threatening illness. Immuno-compromised individuals are encouraged to consult their doctor regarding appropriate precautions to take to prevent infection. Cryptosporidium must be ingested for it to cause disease, and may be passed through other means than drinking water.”

1. 2. If the system has performed any mon-

itoring for radon which indicates that radon may be present in the finished water, the report must include:

1. A. The results of the monitoring; and
2. B. An explanation of the significance

of the results. The system may use the following language or similar language for the explanation: “Radon is a naturally occurring gas present in some ground water. It poses a lung cancer risk when the radon gas is released from water into air (as occurs during showering, bathing, or washing dishes or clothes), and a stomach cancer risk when you drink water containing radon. Radon gas released from drinking water is a relatively small part of the total radon in air. Other sources of radon gas are soils which enter homes through foundations, and radon inhaled directly while smoking cigarettes. Experts are not sure exactly what the cancer risk is from a given level of radon in your drinking water. If you are concerned about radon in your home, test kits are available to determine the total exposure level.”

1. 3. If the system has performed addition-

al monitoring which indicates the presence of other contaminants in the finished water, systems are encouraged to report any results which may indicate a health concern. To determine if results may indicate a health concern, the department recommends that systems find out if the Environmental Protection Agency has proposed a National Primary Drinking Water Regulation or issued a health advisory for that contaminant by calling the Safe Drinking Water Hotline (800- 426-4791). Detects above a proposed MCL or health advisory level may indicate possible health concerns. For such contaminants, the department recommends that the report include:

1. A. The results of the monitoring; and
2. B. An explanation of the significance

of the results noting the existence of a health advisory or a proposed regulation.

1. (F) Compliance with Department Regulations. In addition to the requirements of paragraph (2)(D)6., the report must note any violation that occurred during the year covered by the report of a requirement listed below, and include a clear and readily understandable explanation of the violation, any potential adverse health effects, and the steps the system has taken to correct the violation.

   1. 1. Monitoring and reporting of compli-

ance data.

1. 2. Filtration and disinfection prescribed

by 10 CSR 60-4.055. For systems which have failed to install adequate filtration or disinfection equipment or processes, or have had a failure of such equipment or processes which constitutes a violation, the report must include the following language as part of the explanation of potential adverse health effects: “Inadequately treated water may contain disease-causing organisms. These organisms include bacteria, viruses, and parasites which can cause symptoms such as nausea, cramps, diarrhea, and associated headaches.”

1. 3. Lead and copper control requirements

prescribed by 10 CSR 60-15. For systems which fail to take one (1) or more actions prescribed by 10 CSR 60-15.010(4), 10 CSR 60-15.020, 10 CSR 60-15.030, 10 CSR 60- 15.040, or 10 CSR 60-15.050, the report must include the applicable language of Appendix C to this rule for lead, copper, or both.

1. 4. Treatment techniques for Acrylamide

and Epichlorohydrin prescribed by 10 CSR 60-4.040(9). For systems which violate the requirements of 10 CSR 60-4.040(9), the report must include the relevant language from Appendix C to this rule.

1. 5. Record keeping of compliance data.
2. 6. Special monitoring requirements pre-

scribed by 10 CSR 60-4.110.

1. 7. Violation of the terms of a variance,

an exemption, or an administrative or judicial order.

1. (G) Variances and Exemptions. If a system is operating under the terms of a variance or an exemption issued under 10 CSR 60-6.010 or 10 CSR 60-6.020, the report must contain—

   1. 1. An explanation of the reasons for the

variance or exemption;

1. 2. The date on which the variance or

exemption was issued;

1. 3. A brief status report on the steps the

system is taking to install treatment, find alternative sources of water, or otherwise comply with the terms and schedules of the variance or exemption; and

1. 4. A notice of any opportunity for pub-

lic input in the review, or renewal, of the variance or exemption.

1. (H) Additional Information.

   1. 1. The report must contain a brief expla-

nation regarding contaminants which may reasonably be expected to be found in drinking water, including bottled water. The report must include the language of subparagraph (2)(H)1.A. of this rule. This explanation must also include the information contained in subparagraphs (2)(H)1.B.–D. of this rule using this language or comparable language.

1. A. “Drinking water, including bottled

water, may reasonably be expected to contain at least small amounts of some contaminants. The presence of contaminants does not necessarily indicate that water poses a health risk. More information about contaminants and potential health effects can be obtained by calling the Environmental Protection Agency’s Safe Drinking Water Hotline (800- 426-4791).”

1. B. “The sources of drinking water

(both tap water and bottled water) include rivers, lakes, streams, ponds, reservoirs, springs, and wells. As water travels over the surface of the land or through the ground, it dissolves naturally-occurring minerals and, in some cases, radioactive material, and can pick up substances resulting from the presence of animals or from human activity.”

1. C. “Contaminants that may be present

in source water include:

1. (I) Microbial contaminants, such as

viruses and bacteria, which may come from sewage treatment plants, septic systems, agricultural livestock operations, and wildlife.

1. (II) Inorganic contaminants, such

as salts and metals, which can be naturallyoccurring or result from urban storm water runoff, industrial or domestic wastewater discharges, oil and gas production, mining, or farming.

1. (III) Pesticides and herbicides,

which may come from a variety of sources such as agriculture, urban storm water runoff, and residential uses. 10 CSR 60-8

1. (IV) Organic chemical contami-

nants, including synthetic and volatile organic chemicals, which are by-products of industrial processes and petroleum production, and can also come from gas stations, urban stormwater runoff, and septic systems.

1. (V) Radioactive contaminants,

which can be naturally-occurring or be the result of oil and gas production and mining activities.”

1. D. “In order to ensure that tap water

is safe to drink, the Department of Natural Resources prescribes regulations which limit the amount of certain contaminants in water provided by public water systems. Department of Health and Senior Services regulations establish limits for contaminants in bottled water which must provide the same protection for public health.”

1. 2. The report must include the telephone

number of the owner, operator, or designee of the community water system as a source of additional information concerning the report.

1. 3. In communities with a large propor-

tion of non-English speaking residents, as determined by the department, the report must contain information in the appropriate language(s) regarding the importance of the report. The report may use a notice based on the following wording: “This report contains very important information about your drinking water. Translate it or speak with someone who understands it.” The report may also contain a telephone number or address where such residents may contact the system to obtain a translated copy of the report or assistance in the appropriate language.

1. 4. The report must include information

(e.g., time and place of regularly scheduled board meetings) about opportunities for public participation in decisions that may affect the quality of the water.

1. 5. The systems may include such addi-

tional information as they deem necessary for public education consistent with, and not detracting from, the purpose of the report.

1. 6. Systems required to comply with the

Ground Water Rule.

1. A. Any ground water system that

receives notice from the department of a significant deficiency or notice from a laboratory of a fecal indicator-positive ground water source sample that is not invalidated by the department under 10 CSR 60-4.025 (3)(D) must inform its customers of any significant deficiency that is uncorrected or of any fecal indicator-positive ground water source sample in the next report. The system must continue to inform the public annually until the department determines that the significant deficiency is corrected or the fecal contamination in the ground water source is addressed under 10 CSR 60-4.025(4)(A). Each report must include the following:

1. (I) The nature of the particular sig-

nificant deficiency or the source of the fecal contamination (if the source is known) and the date the significant deficiency was identified by the department or the dates of the fecal indicator-positive ground water source samples;

1. (II) If the fecal contamination in

the ground water source has been addressed under 10 CSR 60-4.025(4)(A) and the date of such action;

1. (III) For each significant deficiency

or fecal contamination in the ground water source that has not been addressed under 10 CSR 60-4.025(4)(A), the departmentapproved plan and schedule for correction, including interim measures, progress to date, and any interim measures completed; and

1. (IV) If the system receives notice of

a fecal indicator-positive ground water source sample that is not invalidated by the department under 10 CSR 60-4.025 (3)(D), the potential health effects using the health effects language of Appendix C of this rule.

1. B. If directed by the department, a

system with significant deficiencies that have been corrected before the next Consumer Confidence Report is issued must inform its customers of the significant deficiency, how the deficiency was corrected, and the date of correction under subparagraph (2)(H)6.A. of this rule.

1. (3) Required Additional Health Information.

   1. (A) All reports must prominently display the following language: “Some people may be more vulnerable to contaminants in drinking water than the general population. Immuno-compromised persons such as persons with cancer undergoing chemotherapy, persons who have undergone organ transplants, people with HIV/AIDS or other immune system disorders, some elderly, and infants can be particularly at risk from infections. These people should seek advice about drinking water from their healthcare providers. Environmental Protection Agency/ Centers for Disease Control guidelines on appropriate means to lessen the risk of infection by Cryptosporidium and other microbial contaminants are available from the Safe Drinking Water Hotline (800-426-4791).”

   2. (B) Arsenic.

      1. 1. A system that detects arsenic at levels

above 0.005 mg/l and up to and including 0.01 mg/l must include in its report a short informational statement about arsenic, using language such as: “While your drinking water meets EPA’s standard for arsenic, it does contain low levels of arsenic. EPA’s standard balances the current understanding of arsenic’s possible health effects against the costs of removing arsenic from drinking water. EPA continues to research the health effects of low levels of arsenic, which is a mineral known to cause cancer in humans at high concentrations and is linked to other health effects such as skin damage and circulatory problems.” The system may write its own educational statement, but only in consultation with the department.

1. 2. Beginning in the report due by July 1,

2002, and ending January 22, 2006, a community water system that detects arsenic above 0.01 mg/L and up to and including 0.05 mg/L must include the arsenic health effects language prescribed by Appendix C of this rule.

1. (C) A system which detects nitrate at levels above five milligrams per liter (5 mg/l), but below the MCL:

   1. 1. Must include a short informational

statement about the impacts of nitrate on children using language such as: “Nitrate in drinking water at levels above 10 ppm is a health risk for infants of less than six months of age. High nitrate levels in drinking water can cause blue-baby syndrome. Nitrate levels may rise quickly for short periods of time because of rainfall or agricultural activity. If you are caring for an infant you should ask advice from your health care provider.”

1. 2. May write its own educational state-

ment, but only in consultation with the department.

1. (D) Systems which detect lead above the action level in more than five percent (5%), and up to and including ten percent (10%), of homes sampled:

   1. 1. Must include a short informational

statement about the special impact of lead on children using language such as: “Infants and young children are typically more vulnerable to lead in drinking water than the general population. It is possible that lead levels at your home may be higher than at other homes in the community as a result of materials used in your home’s plumbing. If you are concerned about elevated lead levels in your home’s water, you may wish to have your water tested and flush your tap for 30 seconds to 2 minutes before using tap water. Additional information is available from the Safe Drinking Water Hotline (800-426-4791).”

1. 2. May write its own educational state-

ment, but only in consultation with the department.

1. (E) Community water systems that

detect total trihalomethanes (TTHM) above 0.080 mg/l, but below the MCL in 10 CSR 60-4.090, as an annual average, monitored and calculated under the provisions of 10 CSR 60-4.090, must include health effects language prescribed by paragraph (73) of Appendix C.

1. (4) Report Delivery and Record Keeping.

   1. (A) Systems serving ten thousand (10,000) or more persons must mail or otherwise directly deliver one (1) copy of the report to each customer annually.

   2. (B) Systems serving greater than five hundred (500) persons but fewer than ten thousand (10,000) persons must use one (1) of the following options:

      1. 1. Mail or otherwise directly deliver one

2. (1) copy of the report to each customer annually; or

   1. 2. All of the following (Systems choos-

ing this option must notify customers that the report will not be mailed. This notification must be published in the newspaper(s) in which the reports are published and provided with any other notification method that is used)—

1. A. Publish the report at least once

annually in one (1) or more local newspaper(s) of general circulation, as defined in section 493.050, RSMo, serving the area in which the system is located;

1. B. Provide notice to their customers at

least once per year by mail, or door-to-door delivery, or by continuous posting in appropriate locations that the report is available upon request; and

1. C. Post the report continuously at the

local water system office, the city/county/ regional public library, and other public buildings within the water system service area.

1. (C) Systems serving five hundred (500) or fewer persons must use one (1) of the options:

   1. 1. Use the method in paragraph

(4)(B)1.;

1. 2. Use the method in paragraph

(4)(B)2.; or

1. 3. Provide notice at least once per year

to their customers by mail, or door-to-door delivery, or by continuous posting in appropriate locations that the report is available upon request; and post the report continuously at the local water system office and the city/county/regional public library.

1. (D) Each community water system must make its reports available to the public upon request.
2. (E) In addition to the delivery requirement in subsection (4)(A) of this rule, each community water system serving one hundred thousand (100,000) or more persons must post its current year’s report to a publiclyaccessible site on the Internet. Other water systems with access to a publicly-accessible Internet site are encouraged to use the Internet as an additional method of distribution.
3. (F) The system must make a good faith effort to reach consumers who do not get water bills, using means recommended by the department. The department expects that an adequate good faith effort will be tailored to the consumers who are served by the system but are not bill-paying customers, such as renters or workers. A good faith effort to reach consumers would include a mix of methods appropriate to the particular system such as: Posting the reports on the Internet; mailing to postal patrons in metropolitan areas; advertising the availability of the report in the news media; publication in a local newspaper; posting in libraries or other public places such as cafeterias or lunch rooms of public buildings; delivery of multiple copies for distribution by single-biller customers such as apartment buildings or private employers; delivery to community organizations.
4. (G) No later than the date the system is required to distribute the report to its customers, each community water system must mail a copy of the report to the department, followed within three (3) months by a certification, on a form provided by the department, that the report has been distributed to customers, and that the information is correct and consistent with the compliance monitoring data previously submitted to the department.
5. (H) No later than the date the system is required to distribute the report to its customers, each community water system must deliver the report to any other agency or clearinghouse identified by the department.

6. (I) Any system subject to this rule must retain copies of its consumer confidence report for no less than three (3) years. Converting MCL Compliance Values for Consumer Confidence Reports Key AL = Action Level MCL = Maximum Contaminant Level MCLG = Maximum Contaminant Level Goal MFL = million fibers per liter mrem/year = millirems per year (a measure of radiation absorbed by the body) Contaminant

   Microbiological Contaminants 1. Total Coliform Bacteria

   1. 30. Thallium

   Appendix A to 10 CSR 60-8.030

MCL in compliance units (mg/L)

(Systems that collect 40 or more samples per month) (cid:116)5% of monthly samples are positive; (systems that collect fewer than 40 samples per month) 1 positive monthly

0.002 NTU = Nephelometric Turbidity Units pCi/L = picocuries per liter (a measure of radioactivity) ppm = parts per million, or milligrams per liter (mg/L) ppb = parts per billion, or micrograms per liter (μg/L) ppt = parts per trillion, or nanograms per liter ppq = parts per quadrillion, or picograms per liter TT = Treatment Technique multiply MCL in CCR units by

(Systems that collect 40 or more samples per month) (cid:116)5% of monthly samples are positive; (systems that collect fewer than 40 samples per month) 1 positive monthly sample.

1000 2 ppb MCLG in CCR units

0.5

1. 85. Xylenes 10

   Appendix B to 10 CSR 60-8.030

Key

AL=Action Level MCL=Maximum Contaminant Level MCLG=Maximum Contaminant Level Goal MFL=million fibers per liter mrem/year=millirems per year (a measure of radiation absorbed by the body) Contaminant (units) Microbiological Contaminants

1. 1. Total Coliform Bacteria
2. 2. Fecal coliform and E. coli
3. 9. Uranium Inorganic Contaminants
4. 10. Antimony (ppb)
5. 11. Arsenic (ppb)

1These arsenic values are effective until Jan. 23, 2006. 2These arsenic values are effective Jan. 23, 2006. 12. Asbestos (MFL) 10 ppm

Regulated Contaminants NTU=Nephelometric Turbidity Units pCi/L=picocuries per liter (a measure of radioactivity) ppm=parts per million, or milligrams per liter (mg/L) ppb=parts per billion, or micrograms per liter (μg/L) ppt=parts per trillion, or nanograms per liter ppq=parts per quadrillion, or picograms per liter TT=Treatment Technique

MCLG MCL

0 (Systems that collect 40 or more samples per month) (cid:116)5% of monthly samples are positive; (systems that collect fewer than 40 samples per month) 1 positive monthly sample. 0 A routine sample and a repeat sample are total coliform positive, and one is also fecal coliform or

0 30

6 6

N/A1 501 02 102

7 7 Major sources in drinking water

Naturally present in the environment.

Human and animal fecal waste.

Erosion of natural deposits.

Discharge from petroleum refineries; fire retardants; ceramics; electronics; solder. Erosion of natural deposits; Runoff from orchards; Runoff from glass and electronics production wastes.

Decay of asbestos cement water mains; Erosion of natural deposits.

1. 16. Cadmium (ppb)
2. 24. Fluoride (ppm)
3. 29. Selenium (ppb)
4. 36. Benzo(a)pyrene [PAH] (nanograms/l) 10 CSR 60-8

Corrosion of galvanized pipes; Erosion of natural deposits; Discharge from metal refineries; Runoff from waste batteries and

Erosion of natural deposits; Water additive which promotes strong teeth; Discharge from

Discharge from petroleum and metal refineries; Erosion of natural deposits; Discharge from

Leaching from linings of water storage tanks

1. 48. Epichlorohydrin
2. 57. Oxamyl [Vydate] (ppb)
3. 64. Carbon tetrachloride (ppb)
4. 70. cis-1,2-Dichloroethylene (ppb) 0 TT

200 200

0 5

70 70 Discharge from industrial chemical factories; An impurity of some water

Runoff/leaching from insecticide used on

Discharge from chemical plants and other

Discharge from industrial chemical

1. 78. 1,2,4-Trichlorobenzene (ppb) 70 70 Discharge from textile-finishing factories.

2. 79. 1,1,1-Trichloroethane (ppb) 200 200 Discharge from metal degreasing sites and

   Appendix C to 10 CSR 60-8.030 Health Effects Language

Microbiological Contaminants

1. (1) Total Coliform. “Coliforms are bacteria that are naturally present in the environment and are used as an indicator that other, potentially-harmful, bacteria may be present. Coliforms were found in more samples than allowed and this was a warning of potential problems.”
2. (2) Fecal coliform/E.coli. “Fecal coliforms and E. coli are bacteria whose presence indicates that the water may be contaminated with human or animal wastes. Microbes in these wastes can cause short-term effects, such as diarrhea, cramps, nausea, headaches, or other symptoms. They may pose a special health risk for infants, young children, and people with severely compromised immune systems.”
3. (3) Total organic carbon. “Total organic carbon (TOC) has no health effects. However, total organic carbon provides a medium for the formation of disinfection by-products. These by-products include trihalomethanes (THMs) and haloacetic acids (HAAs5). Drinking water containing these by-products in excess of the MCL may lead to adverse health effects, liver or kidney problems, or nervous system effects, and may lead to an increased risk of getting cancer.”
4. (4) Turbidity. “Turbidity has no health effects. However, turbidity can interfere with disinfection and provide a medium for microbial growth. Turbidity may indicate the presence of disease-causing organisms. These organisms include bacteria, viruses, and parasites that can cause symptoms such as nausea, cramps, diarrhea, and associated headaches.”

Radioactive Contaminants

1. (5) Beta/photon emitters. “Certain minerals are radioactive and may emit forms of radiation known as photons and beta radiation. Some people who drink water containing beta and photon emitters in excess of the MCL over many years may have an increased risk of getting cancer.”
2. (6) Alpha emitters. “Certain minerals are radioactive and may emit a form of radiation known as alpha radiation. Some people who drink water containing alpha emitters in excess of the MCL over many years may have an increased risk of getting cancer.”
3. (7) Combined Radium 226/228. “Some people who drink water containing radium 226 or 228 in excess of the MCL over many years may have an increased risk of getting cancer.”
4. (8) Uranium. “Some people who drink water containing uranium in excess of the MCL over many years may have an increased risk of getting cancer and kidney toxicity.”

Inorganic Contaminants

1. (9) Antimony. “Some people who drink water containing antimony well in excess of the MCL over many years could experience increases in blood cholesterol and decreases in blood sugar.”
2. (10) Arsenic. “Some people who drink water containing arsenic in excess of the MCL over many years could experience skin damage or problems with their circulatory system, and may have an increased risk of getting cancer.”
3. (11) Asbestos. “Some people who drink water containing asbestos in excess of the MCL over many years may have an increased risk of developing benign intestinal polyps.”
4. (12) Barium. “Some people who drink water containing barium in excess of the MCL over many years could experience an increase in their blood pressure.”
5. (13) Beryllium. “Some people who drink water containing beryllium well in excess of the MCL over many years could develop intestinal lesions.”
6. (14) Bromate. “Some people who drink water containing bromate in excess of the MCL over many years may have an increased risk of getting cancer.”
7. (15) Cadmium. “Some people who drink water containing cadmium in excess of the MCL over many years could experience kidney damage.”

1. (16) Chloramines. “Some people who use water containing chloramines well in excess of the MRDL could experience irritating effects to their eyes and nose. Some people who drink water containing chloramines well in excess of the MRDL could experience stomach discomfort or anemia.”
2. (17) Chlorine. “Some people who use water containing chlorine well in excess of the MRDL could experience irritating effects to their eyes and nose. Some people who drink water containing chlorine well in excess of the MRDL could experience stomach discomfort.”
3. (18) Chlorine dioxide. “Some infants and young children who drink water containing chlorine dioxide in excess of the MRDL could experience nervous system effects. Similar effects may occur in fetuses of pregnant women who drink water containing chlorine dioxide in excess of the MRDL. Some people may experience anemia.”
4. (19) Chlorite. “Some infants and young children who drink water containing chlorite in excess of the MCL could experience nervous system effects. Similar effects may occur in fetuses of pregnant women who drink water containing chlorite in excess of the MCL. Some people may experience anemia.”
5. (20) Chromium. “Some people who use water containing chromium well in excess of the MCL over many years could experience allergic dermatitis.”
6. (21) Copper. “Copper is an essential nutrient, but some people who drink water containing copper in excess of the action level over a relatively short amount of time could experience gastrointestinal distress. Some people who drink water containing copper in excess of the action level over many years could suffer liver or kidney damage. People with Wilson’s Disease should consult their personal doctor.”
7. (22) Cyanide. “Some people who drink water containing cyanide well in excess of the MCL over many years could experience nerve damage or problems with their thyroid.”
8. (23) Fluoride. “Some people who drink water containing fluoride in excess of the MCL over many years could get bone disease, including pain and tenderness of the bones. Fluoride in drinking water at half the MCL or more may cause mottling of children’s teeth, usually in children less than nine years old. Mottling, also known as dental fluorosis, may include brown staining and/or pitting of the teeth, and occurs only in developing teeth before they erupt from the gums.”
9. (24) Lead. “Infants and children who drink water containing lead in excess of the action level could experience delays in their physical or mental development. Children could show slight deficits in attention span and learning abilities. Adults who drink this water over many years could develop kidney problems or high blood pressure.”
10. (25) Mercury (inorganic). “Some people who drink water containing inorganic mercury well in excess of the MCL over many years could experience kidney damage.”
11. (26) Nitrate. “Infants below the age of six months who drink water containing nitrate in excess of the MCL could become seriously ill and, if untreated, may die. Symptoms include shortness of breath and blue-baby syndrome.”
12. (27) Nitrite. “Infants below the age of six months who drink water containing nitrite in excess of the MCL could become seriously ill and, if untreated, may die. Symptoms include shortness of breath and blue-baby syndrome.”
13. (28) Selenium. “Selenium is an essential nutrient. However, some people who drink water containing selenium in excess of the MCL over many years could experience hair or fingernail losses, numbness in fingers or toes, or problems with their circulation.”
14. (29) Thallium. “Some people who drink water containing thallium in excess of the MCL over many years could experience hair loss, changes in their blood, or problems with their kidneys, intestines, or liver.”

Synthetic Organic Contaminants Including Pesticides and Herbicides

1. (30) 2,4-D. “Some people who drink water containing the weed killer 2,4-D well in excess of the MCL over many years could experience problems with their kidneys, liver, or adrenal glands.”
2. (31) 2,4,5-TP (Silvex). “Some people who drink water containing silvex in excess of the MCL over many years could experience liver problems.”
3. (32) Acrylamide. “Some people who drink water containing high levels of acrylamide over a long period of time could have problems with their nervous system or blood, and may have an increased risk of getting cancer.”
4. (33) Alachlor. “Some people who drink water containing alachlor in excess of the MCL over many years could have problems with their eyes, liver, kidneys, or spleen, or experience anemia, and may have an increased risk of getting cancer.”
5. (34) Atrazine. “Some people who drink water containing atrazine well in excess of the MCL over many years could experience problems with their cardiovascular system or reproductive difficulties.”
6. (35) Benzo(a)pyrene (PAH). “Some people who drink water containing benzo(a)pyrene in excess of the MCL over many years may experience reproductive difficulties and may have an increased risk of getting cancer.”
7. (36) Carbofuran. “Some people who drink water containing carbofuran in excess of the MCL over many years could experience problems with their blood, or nervous or reproductive systems.”
8. (37) Chlordane. “Some people who drink water containing chlordane in excess of the MCL over many years could experience problems with their liver or nervous system, and may have an increased risk of getting cancer.”
9. (38) Dalapon. “Some people who drink water containing dalapon well in excess of the MCL over many years could experience minor kidney changes.”
10. (39) Di(2-ethylhexyl)adipate. “Some people who drink water containing di(2-ethylhexyl)adipate well in excess of the MCL over many years could experience toxic effects such as weight loss, liver enlargement, or possible reproductive difficulties.”
11. (40) Di(2-ethylhexyl)phthalate. “Some people who drink water containing di(2-ethylhexyl)phthalate well in excess of the MCL over many years may have problems with their liver, or experience reproductive difficulties, and may have an increased risk of getting cancer.”
12. (41) Dibromochloropropane (DBCP). “Some people who drink water containing DBCP in excess of the MCL over many years could experience reproductive difficulties and may have an increased risk of getting cancer.”
13. (42) Dinoseb. “Some people who drink water containing dinoseb well in excess of the MCL over many years could experience reproductive difficulties.”
14. (43) Dioxin (2,3,7,8-TCDD). “Some people who drink water containing dioxin in excess of the MCL over many years could experience reproductive difficulties and may have an increased risk of getting cancer.”
15. (44) Diquat. “Some people who drink water containing diquat in excess of the MCL over many years could get cataracts.”
16. (45) Endothall. “Some people who drink water containing endothall in excess of the MCL over many years could experience problems with their stomach or intestines.”
17. (46) Endrin. “Some people who drink water containing endrin in excess of the MCL over many years could experience liver problems.”
18. (47) Epichlorohydrin. “Some people who drink water containing high levels of epichlorohydrin over a long period of time could experience stomach problems, and may have an increased risk of getting cancer.”
19. (48) Ethylene dibromide. “Some people who drink water containing ethylene dibromide in excess of the MCL over many years could experience problems with their liver, stomach, reproductive system, or kidneys, and may have an increased risk of getting cancer.”
20. (49) Glyphosate. “Some people who drink water containing glyphosate in excess of the MCL over many years could experience problems with their kidneys or reproductive difficulties.”
21. (50) Heptachlor. “Some people who drink water containing heptachlor in excess of the MCL over many years could experience liver damage and may have an increased risk of getting cancer.”
22. (51) Heptachlor epoxide. “Some people who drink water containing heptachlor epoxide in excess of the MCL over many years could experience liver damage, and may have an increased risk of getting cancer.”
23. (52) Hexachlorobenzene. “Some people who drink water containing hexachlorobenzene in excess of the MCL over many years could experience problems with their liver or kidneys, or adverse reproductive effects, and may have an increased risk of getting cancer.”
24. (53) Hexachlorocyclopentadiene. “Some people who drink water containing hexachlorocyclopentadiene well in excess of the MCL over many years could experience problems with their kidneys or stomach.”
25. (54) Lindane. “Some people who drink water containing lindane in excess of the MCL over many years could experience problems with their kidneys or liver.”
26. (55) Methoxychlor. “Some people who drink water containing methoxychlor in excess of the MCL over many years could experience reproductive difficulties.”
27. (56) Oxamyl (Vydate). “Some people who drink water containing oxamyl in excess of the MCL over many years could experience slight nervous system effects.”
28. (57) PCBs (Polychlorinated biphenyls). “Some people who drink water containing PCBs in excess of the MCL over many years could experience changes in their skin, problems with their thymus gland, immune deficiencies, or reproductive or nervous system difficulties, and may have an increased risk of getting cancer.”
29. (58) Pentachlorophenol. “Some people who drink water containing pentachlorophenol in excess of the MCL over many years could experience problems with their liver or kidneys, and may have an increased risk of getting cancer.”
30. (59) Picloram. “Some people who drink water containing picloram in excess of the MCL over many years could experience problems with their liver.”
31. (60) Simazine. “Some people who drink water containing simazine in excess of the MCL over many years could experience problems with their blood.”
32. (61) Toxaphene. “Some people who drink water containing toxaphene in excess of the MCL over many years could have problems with their kidneys, liver, or thyroid, and may have an increased risk of getting cancer.” Volatile Organic Contaminants
33. (62) Benzene. “Some people who drink water containing benzene in excess of the MCL over many years could experience anemia or a decrease in blood platelets, and may have an increased risk of getting cancer.”
34. (63) Carbon Tetrachloride. “Some people who drink water containing carbon tetrachloride in excess of the MCL over many years could experience problems with their liver and may have an increased risk of getting cancer.”
35. (64) Chlorobenzene. “Some people who drink water containing chlorobenzene in excess of the MCL over many years could experience problems with their liver or kidneys.”
36. (65) o-Dichlorobenzene. “Some people who drink water containing o-dichlorobenzene well in excess of the MCL over many years could experience problems with their liver, kidneys, or circulatory systems.”
37. (66) p-Dichlorobenzene. “Some people who drink water containing p-dichlorobenzene in excess of the MCL over many years could experience anemia, damage to their liver, kidneys, or spleen, or changes in their blood.”
38. (67) 1,2-Dichloroethane. “Some people who drink water containing 1,2-dichloroethane in excess of the MCL over many years may have an increased risk of getting cancer.”
39. (68) 1,1-Dichloroethylene. “Some people who drink water containing 1,1-dichloroethylene in excess of the MCL over many years could experience problems with their liver.”
40. (69) cis-1,2-Dichloroethylene. “Some people who drink water containing cis-1,2-dichloroethylene in excess of the MCL over many years could experience problems with their liver.”
41. (70) trans-1,2-Dicholoroethylene. “Some people who drink water containing trans-1,2-dichloroethylene well in excess of the MCL over many years could experience problems with their liver.”
42. (71) Dichloromethane. “Some people who drink water containing dichloromethane in excess of the MCL over many years could have liver problems and may have an increased risk of getting cancer.”
43. (72) 1,2-Dichloropropane. “Some people who drink water containing 1,2-dichloropropane in excess of the MCL over many years may have an increased risk of getting cancer.”
44. (73) Ethylbenzene. “Some people who drink water containing ethylbenzene well in excess of the MCL over many years could experience problems with their liver or kidneys.”
45. (74) Haloacetic Acids (HAA). “Some people who drink water containing haloacetic acids in excess of the MCL over many years may have an increased risk of getting cancer.”
46. (75) Styrene. “Some people who drink water containing styrene well in excess of the MCL over many years could have problems with their liver, kidneys, or circulatory system.”
47. (76) Tetrachloroethylene. “Some people who drink water containing tetrachloroethylene in excess of the MCL over many years could have problems with their liver, and may have an increased risk of getting cancer.”
48. (77) 1,2,4-Trichlorobenzene. “Some people who drink water containing 1,2,4-trichlorobenzene well in excess of the MCL over many years could experience changes in their adrenal glands.”
49. (78) 1,1,1-Trichloroethane. “Some people who drink water containing 1,1,1-trichloroethane in excess of the MCL over many years could experience problems with their liver, nervous system, or circulatory system.”
50. (79) 1,1,2-Trichloroethane. “Some people who drink water containing 1,1,2-trichloroethane well in excess of the MCL over many years could have problems with their liver, kidneys, or immune systems.”
51. (80) Trichloroethylene. “Some people who drink water containing trichloroethylene in excess of the MCL over many years could experience problems with their liver and may have an increased risk of getting cancer.”
52. (81) TTHMs (Total Trihalomethanes). “Some people who drink water containing trihalomethanes in excess of the MCL over many years may experience problems with their liver, kidneys, or central nervous systems, and may have an increased risk of getting cancer.”
53. (82) Toluene. “Some people who drink water containing toluene well in excess of the MCL over many years could have problems with their nervous system, kidneys, or liver.”
54. (83) Vinyl Chloride. “Some people who drink water containing vinyl chloride in excess of the MCL over many years may have an increased risk of getting cancer.”
55. (84) Xylenes. “Some people who drink water containing xylenes in excess of the MCL over many years could experience damage to their nervous system.”

AUTHORITY: section 640.100, RSMo Supp. 2009 and section 640.125.1, RSMo 2000.* Original rule filed July 1, 1999, effective March 30, 2000. Amended: Filed March 17, 2003, effective Nov. 30, 2003. Amended: Filed Feb. 27, 2009, effective Oct. 30, 2009. Amended: Filed April 14, 2010, effective Dec. 30, 2010.

*Original authority: 640.100, RSMo 1939, amended 1978, 1981, 1982, 1988, 1989, 1992, 1993, 1995, 1996, 1998, 1999, 2002, 2006 and 640.125, RSMo 1978, amended 1998.