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(6) for organic, inorganic, and radioactive contaminants.

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 which contains data on a

contaminant for which the department has set a treatment technique or an action level must include one (1) or both of the following definitions as applicable:

1. A. Treatment technique—A required

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

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. (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, 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.

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

monitor 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 10 CSR 60-8

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 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 to this rule), 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 to this rule);

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 of this rule):

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 sampling point—the highest average of any of the sampling points and the range of all sampling points expressed in the same units as 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 sampling points—the average and range of detection expressed in the same units as the MCL;

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 to this rule.

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 to this rule.

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 addi-

tional 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.

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 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. (3) Required Additional Health Information. 10 CSR 60-8

   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) A system which detects arsenic at levels above twenty-five micrograms per liter (25 µg/l), but below the MCL:

      1. 1. Must include in its report a short

informational statement about arsenic, using language such as: “Arsenic is a naturallyoccurring mineral known to cause cancer in humans at high concentrations. The Environmental Protection Agency is reviewing the drinking water standard for arsenic because of special concerns that it may not be stringent enough.”

1. 2. May write its own educational state-

ment, but only in consultation with the department.

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 large 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 five (5) 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) 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

Contaminant

Microbiological Contaminants 1. Total Coliform Bacteria

1. 2. Fecal coliform and E. coli
2. 3. Turbidity Radioactive Contaminants
3. 4. Beta/photon emitters
4. 5. Alpha emitters
5. 6. Combined radium Inorganic Contaminants
6. 7. Antimony
7. 8. Arsenic
8. 9. Asbestos
9. 10. Barium
10. 11. Beryllium
11. 12. Cadmium
12. 13. Chromium
13. 14. Copper
14. 15. Cyanide
15. 16. Fluoride
16. 17. Lead
17. 18. Mercury (inorganic)
18. 19. Nitrate (as Nitrogen)
19. 20. Nitrite (as Nitrogen)
20. 21. Selenium
21. 22. Thallium Appendix A to 10 CSR 60-8.030

MCL in compliance units (mg/l)

4 mrem/yr 15 pCi/l 5 pCi/l

.006 .05 7 MFL

.004 .005 .1 AL=1.3 .2

AL=.015 .002

.05 .002 multiply MCL in CCR units by . . .

(Systems that collect 40 or more samples per month) (cid:2)5% of monthly samples are positive; (systems that collect fewer than 40 samples per month) 1 positive monthly sample. A routine sample and a repeat sample are total coliform positive, and one is also fecal coliform or E. coli positive. TT (NTU)

4 mrem/yr 15 pCi/l 5 pCi/l

1000 6 ppb 1000 50 ppb 7 MFL 2 ppm 1000 4 ppb 1000 5 ppb 1000 100 ppb AL=1.3 ppm 1000 200 ppb 4 ppm 1000 AL=15 ppb 1000 2 ppb 10 ppm 1 ppm 1000 50 ppb 1000 2 ppb 10 CSR 60-8

MCLG in CCR units

n/a

n/a

1.3

0.5 Synthetic Organic Contaminants including Pesticides and Herbicides 23. 2,4-D 24. 2,4,5-TP [Silvex] 25. Acrylamide 26. Alachlor 27. Atrazine 28. Benzo(a)pyrene [PAH] 29. Carbofuran 30. Chlordane 31. Dalapon 32. Di(2-ethylhexyl)adipate 33. Di(2-ethylhexyl)phthalate 34. Dibromochloropropane 35. Dinoseb 36. Diquat 37. Dioxin [2,3,7,8-TCDD] 38. Endothall 39. Endrin 40. Epichlorohydrin 41. Ethylene dibromide 42. Glyphosate 43. Heptachlor 44. Heptachlor epoxide 45. Hexachlorobenzene 46. Hexachloro-cyclopentadiene 47. Lindane 48. Methoxychlor 49. Oxamyl [Vydate] 50. PCBs [Polychlorinated biphenyls] 51. Pentachlorophenol 52. Picloram 53. Simazine 54. Toxaphene Volatile Organic Contaminants 55. Benzene 56. Carbon tetrachloride 57. Chlorobenzene 58. o-Dichlorobenzene 59. p-Dichlorobenzene 60. 1,2-Dichloroethane 61. 1,1-Dichloroethylene 62. cis-1,2-Dichloroethylene 63. trans-1,2-Dichloroethylene 64. Dichloromethane 65. 1,2-Dichloropropane 66. Ethylbenzene 67. Styrene 68. Tetrachloroethylene 69. 1,2,4-Trichlorobenzene 70. 1,1,1-Trichloroethane 71. 1,1,2-Trichloroethane 72. Trichloroethylene .07 .05

.002 .003 .0002 .04 .002 .2 .4 .006 .0002 .007 .02 .00000003 .1 .002

.00005 .7 .0004 .0002 .001 .05 .0002 .04 .2 .0005

.001 .5 .004 .003

.005 .005 .1 .6 .075 .005 .007 .07 .1 .005 .005 .7 .1 .005 .07 .2 .005 .005 1,000,000

1,000,000

1,000,000,000

1,000,000

1,000,000 1,000,000

1,000,000

1,000,000 70 ppb 50 ppb TT 2 ppb 3 ppb 200 ppt 40 ppb 2 ppb 200 ppb 400 ppb 6 ppb 200 ppt 7 ppb 20 ppb 30 ppq 100 ppb 2 ppb TT 50 ppt 700 ppb 400 ppt 200 ppt 1 ppb 50 ppb 200 ppt 40 ppb 200 ppb 500 ppt

1 ppb 500 ppb 4 ppb 3 ppb

5 ppb 5 ppb 100 ppb 600 ppb 75 ppb 5 ppb 7 ppb 70 ppb 100 ppb 5 ppb 5 ppb 700 ppb 100 ppb 5 ppb 70 ppb 200 ppb 5 ppb 5 ppb

1. 73. TTHMs [Total trihalomethanes]
2. 74. Toluene
3. 75. Vinyl Chloride

4. 76. Xylenes

   Appendix B to 10 CSR 60-8.030—Regulated Contaminants

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) 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

1. 1. Total Coliform Bacteria

.10 1000

.002 1000 100 ppb

1 ppm 2 ppb 10 ppm

(Systems that collect Naturally present in the 40 or more samples environment. per month) (cid:2)5% of monthly samples are positive; (systems that collect fewer than 40 samples per month) 1 positive 10 CSR 60-8

n/a

1. 10. Barium (ppm)
2. 13. Chromium (ppb)
3. 22. Thallium (ppb)
4. 29. Carbofuran (ppb) 2 2

100 100

0.5 2

40 40 Discharge of drilling wastes; Discharge from metal refineries; Erosion of natural

Discharge from steel and pulp

Leaching from ore-processing sites; Discharge from electronics, glass, and drug

Leaching of soil fumigant used on rice and

1. 40. Epichlorohydrin
2. 49. Oxamyl [Vydate](ppb)
3. 56. Carbon tetrachloride (ppb)
4. 62. cis-1,2-Dichloroethylene (ppb) 0 TT

200 200

0 5

70 70 10 CSR 60-8

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. 69. 1,2,4-Trichlorobenzene (ppb) 70 70 Discharge from textile-finishing factories.

2. 70. 1,1,1-Trichloroethane (ppb) 200 200 Discharge from metal degreasing sites and

   Appendix C to 10 CSR 60-6.030 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) 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. (4) 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. (5) 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. (6) 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.”

Inorganic Contaminants

1. (7) 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. (8) 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. (9) 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. (10) 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. (11) Beryllium. “Some people who drink water containing beryllium well in excess of the MCL over many years could develop intestinal lesions.”
6. (12) Cadmium. “Some people who drink water containing cadmium in excess of the MCL over many years could experience kidney damage.”
7. (13) Chromium. “Some people who use water containing chromium well in excess of the MCL over many years could experience allergic dermatitis.”
8. (14) 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.”
9. (15) 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.”
10. (16) 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. Children may get mottled teeth.”
11. (17) 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.”

1. (18) Mercury (inorganic). “Some people who drink water containing inorganic mercury well in excess of the MCL over many years could experience kidney damage.”
2. (19) 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.”
3. (20) 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.”
4. (21) 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.”
5. (22) 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. (23) 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. (24) 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. (25) 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. (26) 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. (27) 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. (28) 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. (29) 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. (30) 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. (31) Dalapon. “Some people who drink water containing dalapon well in excess of the MCL over many years could experience minor kidney changes.”
10. (32) 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 general toxic effects or reproductive difficulties.”
11. (33) Di(2-ethylhexyl)phthalate. “Some people who drink water containing di(2-ethylhexyl)phthalate 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. (34) 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. (35) Dinoseb. “Some people who drink water containing dinoseb well in excess of the MCL over many years could experience reproductive difficulties.”
14. (36) 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. (37) Diquat. “Some people who drink water containing diquat in excess of the MCL over many years could get cataracts.”
16. (38) 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. (39) Endrin. “Some people who drink water containing endrin in excess of the MCL over many years could experience liver problems.”
18. (40) 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. (41) 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. (42) 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. (43) 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. (44) 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. (45) 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. (46) 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. (47) 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. (48) Methoxychlor. “Some people who drink water containing methoxychlor in excess of the MCL over many years could experience reproductive difficulties.”
27. (49) Oxamyl (Vydate). “Some people who drink water containing oxamyl in excess of the MCL over many years could experience slight nervous system effects.”
28. (50) 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. (51) 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. (52) Picloram. “Some people who drink water containing picloram in excess of the MCL over many years could experience problems with their liver.”
31. (53) Simazine. “Some people who drink water containing simazine in excess of the MCL over many years could experience problems with their blood.”
32. (54) 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

1. (55) 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.”
2. (56) 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.”
3. (57) Chlorobenzene. “Some people who drink water containing chlorobenzene in excess of the MCL over many years could experience problems with their liver or kidneys.”
4. (58) 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.”
5. (59) 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.”
6. (60) 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.”
7. (61) 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.”
8. (62) 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.”
9. (63) 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.”
10. (64) 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.”
11. (65) 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.”
12. (66) 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.”
13. (67) 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.”
14. (68) 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.”
15. (69) 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.”
16. (70) 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.”
17. (71) 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.”
18. (72) 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.”
19. (73) 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.”
20. (74) 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.”
21. (75) 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.”
22. (76) Xylenes. “Some people who drink water containing xylenes in excess of the MCL over many years could experience damage to their nervous system.” AUTHORITY: sections 640.100 and 640.125.1, RSMo Supp. 1998.* Original rule filed July 1, 1999, effective March 30, 2000.

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