PURPOSE: This rule establishes requirements for reports of water sample analyses and monitoring for lead and copper.

1. (1) Reporting requirements for lead and copper tap water monitoring and for water quality parameter monitoring.

   1. (A) A water system shall report to the department the following information for all tap water samples within the first ten (10) days following the end of each applicable monitoring period specified in 10 CSR 60- 15.070, 10 CSR 60-15.080 and 10 CSR 60- 15.090 (such as, every six (6) months, annually or every three (3) years):

      1. 1. The results of all tap samples for lead

and copper including the location of each site and the criteria under 10 CSR 60-15.070(1) under which the site was selected for the system’s sampling pool;

1. 2. A certification that each first draw

sample collected by the water system is one liter (l l ) in volume and, to the best of their knowledge, has stood motionless in the service line or in the interior plumbing of a sampling site for at least six (6) hours;

1. 3. Where residents collected samples, a

certification that each tap sample collected by the residents was taken after the water system informed them of proper sampling procedures specified in 10 CSR 60-15.070(2)(B);

1. 4. The ninetieth percentile lead and cop-

per concentrations measured from among all lead and copper tap water samples collected during each monitoring period (calculated in accordance with 10 CSR 60-15.010(3)(C));

1. 5. With the exception of initial tap sam-

pling conducted pursuant to 10 CSR 60- 15.070(4)(A), the system shall specify any site which was not sampled during previous monitoring periods and include an explanation of why sampling sites have changed;

1. 6. The results of all tap samples for pH

and, where applicable, alkalinity, calcium, conductivity, temperature and orthophosphate or silica collected under 10 CSR 60- 15.080(2)–(5); and

1. 7. The results of all samples collected at

the entry point(s) to the distribution system for applicable water quality parameters under 10 CSR 60-15.080(2)–(5).

1. (B) By the applicable date in 10 CSR 60- 15.070(4)(A) for commencement of monitoring, each community water system which does not complete its targeted sampling pool with tier 1 sampling sites meeting the criteria in 10 CSR 60-15.070(1)(C) shall send a letter to the department justifying its selection of tier 2 or tier 3, or both, sampling sites under 10 CSR 60-15.070(1)(D) or (E), or both.
2. (C) By the applicable date in 10 CSR 60- 15.070(4)(A) for commencement of monitoring, each nontransient noncommunity water system which does not complete its sampling pool with tier 1 sampling sites meeting the criteria in 10 CSR 60-15.070(1)(F) shall send a letter to the department justifying its selection of sampling sites under 10 CSR 60- 15.070(1)(G).
3. (D) By the applicable date in 10 CSR 60- 15.070(4)(A) for commencement of monitoring, each water system with lead service lines that is not able to locate the number of sites served by those lines required under 10 CSR 60-15.070(1)(I) shall send a letter to the department demonstrating why it was unable to locate a sufficient number of these sites based upon the information listed in 10 CSR 60-15.070(1)(B).
4. (E) Each water system that requests that the department reduce the number and frequency of sampling shall provide the information required under 10 CSR 60- 15.070(4)(D).

1. (2) Source Water Monitoring Reporting Requirements.

   1. (A) A water system shall report the sampling results for all source water samples collected in accordance with 10 CSR 60-15.090 within the first ten (10) days following the end of each source water monitoring period (that is, annually, per compliance period, per compliance cycle) specified in 10 CSR 60- 15.090.
   2. (B) With the exception of the first round of source water sampling conducted pursuant to 10 CSR 60-15.090(2), the system shall specify any site which was not sampled during previous monitoring periods and include an explanation of why the sampling point has changed.

2. (3) Corrosion Control Treatment Reporting Requirements. By the applicable dates under 10 CSR 60-15.020, systems shall report the following information:

   1. (A) For systems demonstrating that they have already optimized corrosion control, information required in 10 CSR 60- 15.020(1)(B) or (2)(B);
   2. (B) For systems required to optimize corrosion control, their recommendation regarding optimal corrosion control treatment under 10 CSR 60-15.030(1);
   3. (C) For systems required to evaluate the effectiveness of corrosion control treatments under 10 CSR 60-15.030(3), the information required by that section; and
   4. (D) For systems required to install optimal corrosion control designated by the department under 10 CSR 60-15.030(4), a letter certifying that the system has completed installation of that treatment.

3. (4) Source Water Treatment Reporting Requirements. By the applicable dates in 10 CSR 60-15.040, systems shall provide the following information to the department:

   1. (A) If required under 10 CSR 60- 15.040(2), their recommendation regarding source water treatment; and
   2. (B) For systems required to install source water treatment under 10 CSR 60- 15.040(2)(A), a letter certifying that the system has completed installation of the treatment designated by the department within twenty-four (24) months after the department designated the treatment.

4. (5) Lead Service Line Replacement Reporting Requirements. Systems shall report the following information to the department to demonstrate compliance with the requirements of 10 CSR 60-15.050:

   1. (A) Within twelve (12) months after a system exceeds the lead action level in sampling referred to in 10 CSR 60-15.050(1), the system shall demonstrate in writing to the department that it has conducted a materials evaluation, including the evaluation in 10 CSR 60-15.070(1), to identify the initial number of lead service lines in its distribution system and shall provide the department with the system’s schedule for replacing annually at least seven percent (7%) of the initial number of lead service lines in its distribution system;

   2. (B) Within twelve (12) months after a system exceeds the lead action level in sampling referred to in 10 CSR 60-15.050(1), and every twelve (12) months after that, the system shall demonstrate to the department in writing that the system has either—

      1. 1. Replaced in the previous twelve (12)

months at least seven percent (7%) of the initial lead service lines (or a greater number of lines specified by the department under 10 CSR 60-15.050(6)) in its distribution system; or

1. 2. Conducted sampling which demon-

strates that the lead concentration in all service line samples from an individual line(s), taken pursuant to 10 CSR 60-15.070(2)(C), is less than or equal to 0.015 milligrams per liter (mg/l). In those cases, the total number of lines replaced or which meet the criteria in 10 CSR 60-15.050(2), or both, shall equal at least seven percent (7%) of the initial number of lead lines identified under subsection (5)(A) of this rule (or the percentage specified by the department under 10 CSR 60- 15.050(6));

1. (C) The annual letter submitted to the department under subsection (5)(B) of this rule shall contain the following information:

   1. 1. The number of lead service lines

scheduled to be replaced during the previous year of the system’s replacement schedule;

1. 2. The number and location of each lead

service line replaced during the previous year of the system’s replacement schedule; and

1. 3. If measured, the water lead concen-

tration and location of each lead service line sampled, the sampling method and the date of sampling; and

1. (D) As soon as practicable, but in no case later than three (3) months after a system exceeds the lead action level in sampling referred to in 10 CSR 60-15.050(1), any system seeking to rebut the presumption that it has control over the entire lead service line pursuant to 10 CSR 60-15.050(4) shall submit a letter to the department describing the legal authority (for example, state statutes, municipal ordinances, public service contracts or other applicable legal authority) which limits the system’s control over the service lines and the extent of the system’s control.

1. (6) Public Education Program Reporting Requirements. By December 31 of each year, any water system that is subject to the public education requirements in 10 CSR 60-15.060 shall submit a letter to the department demonstrating that the system has delivered the public education materials that meet the content requirements in 10 CSR 60-15.060(1) and (2) and the delivery requirements in 10 CSR 60-15.060(3). This information shall include a list of all the newspapers, radio stations, television stations, facilities and organizations to which the system delivered public education materials during the previous year. The water system shall submit the letter required by this section annually for as long as it exceeds the lead action level.
2. (7) Reporting of Additional Monitoring Data. Any system which collects sampling data in addition to that required by this rule shall report the results to the department by the end of the applicable monitoring period under 10 CSR 60-15.070, 10 CSR 60-15.080 and 10 CSR 60-15.090 during which the samples are collected.

AUTHORITY: section 640.100, RSMo (1994).* Original rule Aug. 4, 1992, effective May 6, 1993. Amended: Filed Feb. 1, 1996, effective Oct. 30, 1996. *Original authority 1939, amended 1978, 1981, 1982, 1988, 1989, 1992, 1993, 1995.