Mo. Code Regs. tit. 10 § 60-7.020

Current through Register Vol. 49, No. 23, December 2, 2024

Section 10 CSR 60-7.020 - Reporting Requirements for Lead and Copper Monitoring

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

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

(A) Except as provided in paragraph (1)(A)7. of this rule, a water system shall report to the department the information required by this subsection for all tap water samples and all water quality parameter samples specified in 10 CSR 60-15.080 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). For monitoring periods with a duration less than six (6) months, the end of the monitoring period is the last date samples can be collected during that period as specified in 10 CSR 60-15.070 and 10 CSR 60-15.080. The water system shall report-

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;

2. Documentation for each tap water lead or copper sample for which the water system requests invalidation pursuant to 10 CSR 60-15.070(6);

3. The ninetieth percentile lead and copper 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)), unless the department calculates the system's ninetieth percentile lead and copper levels under section (8) of this rule;

4. With the exception of initial tap sampling 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;

5. 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);

6. 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); and

7. A water system shall report the results of all water quality parameter samples collected under 10 CSR 60-15.080(3)-(6) during each six- (6-) month monitoring period specified in 10 CSR 60-15.080(4) within the first ten (10) days following the end of the monitoring period unless the department has specified a more frequent reporting requirement.

(B) For a non-transient noncommunity water system, or a community water system meeting the criteria of 10 CSR 60-15.060(2)(G) and that does not have enough taps that can provide first-draw samples, the system must either-

1. Provide written documentation to the department identifying standing times and locations for enough non-first-draw samples to make up its sampling pool under 10 CSR 60-15.070(2)(E) by the start of the first applicable monitoring period under 10 CSR 60-15.070(4) that commences after April 11, 2000, unless the department has waived prior department approval of non-first-draw sample sites selected by the system pursuant to 10 CSR 60-15.070(2)(E); or

2. If the department has waived prior approval of non-first-draw sample sites selected by the system, identify, in writing, each site that did not meet the six- (6-) hour minimum standing time and the length of standing time for that particular substitute sample collected pursuant to 10 CSR 60-15.070(2)(E) and include this information with the lead and copper tap sample results required to be submitted pursuant to paragraph (1)(A)1. of this rule.

(C) At a time specified by the department, or if no specific time is designated by the department, then as early as possible prior to the addition of a new source or any long-term change in water treatment, a water system deemed to have optimized corrosion control under 10 CSR 60-15.020(3)(C), a water system subject to reduced monitoring pursuant to 10 CSR 60-15.070(4)(D), or a water system subject to a monitoring waiver pursuant to 10 CSR 60-15.070(7) shall submit written documentation to the department describing the change or addition. The department must review and approve the addition of a new source or long-term change in treatment before it is implemented by the water system. Examples of long-term treatment changes include the addition of a new treatment process or modification of an existing treatment process. Examples of modifications include switching secondary disinfectants, switching coagulants (for example, alum to ferric chloride), and switching corrosion inhibitor products (for example, orthophosphate to blended phosphate). Long-term changes can include dose changes to existing chemicals if the system is planning long-term changes to its finished water pH or residual inhibitor concentration. Long-term treatment changes would not include chemical dose fluctuations associated with daily raw water quality changes.

(D) Any small system applying for a monitoring waiver under 10 CSR 60-15.070(6), or subject to a waiver granted pursuant to 10 CSR 60-15.070(6)(C), shall provide the following information to the state in writing by the specified deadline:

1. By the start of the first applicable monitoring period in 10 CSR 60-15.070(4), any small water system applying for a monitoring waiver shall provide the documentation required to demonstrate that it meets the waiver criteria of 10 CSR 60-15.070(6)(A)-(B);

2. No later than nine (9) years after the monitoring previously conducted pursuant to 10 CSR 60-15.070(6)(B) or 10 CSR 60-15.070(6)(D) 1., each small system desiring to maintain its monitoring waiver shall provide the information required by 10 CSR 60-15.070(6)(D) 1. and 2.; and

3. No later than sixty (60) days after it becomes aware that it is no longer free of lead-containing and/or copper-containing material, as appropriate, each small system with a monitoring waiver shall provide written notification to the state, setting forth the circumstances resulting in the lead-containing and/or copper-containing materials being introduced into the system and what corrective action, if any, the system plans to remove these materials.

(E) Each groundwater system that limits water quality parameter monitoring to a subset of entry points under 10 CSR 60-15.080(3)(C)) shall provide, by the commencement of such monitoring, written correspondence to the department that identifies the selected entry points and includes information sufficient to demonstrate that the sites are representative of water quality and treatment conditions throughout the system.

(2) Source Water Monitoring Reporting Requirements.

(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 6015.090.

(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.

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

(A) For systems demonstrating that they have already optimized corrosion control, information required in 10 CSR 60-15.020(1)(B) or (2)(B);

(B) For systems required to optimize corrosion control, their recommendation regarding optimal corrosion control treatment under 10 CSR 60-15.030(1);

(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

(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.

(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:

(A) If required under 10 CSR 60-

15.040(2), their recommendation regarding source water treatment; and

(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.

(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:

(A) Not later than twelve (12) months after the end of a monitoring period in which a system exceeds the lead action level in sampling referred to in 10 CSR 60-15.050(1), the system must submit written documentation to the department of the material evaluation conducted as required in 10 CSR 60-15.070(1), identify the initial number of lead service lines in its distribution system at the time the system exceeds the lead action level, and 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;

(B) Not later than twelve (12) months after the end of a monitoring period in which 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. 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(5)) in its distribution system; or

2. Conducted sampling which demonstrates 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(5));

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

1. The number of lead service lines scheduled to be replaced during the previous year of the system's replacement schedule. The total number of lines replaced and/or which meet the criteria in 10 CSR 60-15.050(3) 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(5); and

2. The number and location of each lead service line replaced during the previous year of the system's replacement schedule; and

3. If measured, the water lead concentration and location of each lead service line sampled, the sampling method, and the date of sampling; and

(D) Any system which collects lead service line samples following partial lead service line replacement required by 10 CSR 6015.050 shall report the results and any additional information as specified by the department to the department in a time and manner prescribed by the department, to verify that all partial lead service line replacement activities have taken place.

(6) Public Education Program Reporting Requirements.

(A) Any water system that is subject to the public education requirements in 10 CSR 6015.060 shall, within ten (10) days after the end of each period in which the system is required to perform public education tasks in accordance with 10 CSR 60-15.060(2), submit written documentation to the department that contains-

1. A demonstration that the system has delivered the public education materials that meet the content requirements in 10 CSR 60-15.060(1) and the delivery requirements in 10 CSR 60-15.060(2); and

2. A list of all the newspapers, radio stations, television stations, facilities, and organizations to which the system delivered public education materials during the period in which the system was required to perform public education tasks.

(B) Unless required by the department, a system that previously has submitted the information required by paragraph (6)(A)2. of this rule need not resubmit that information as long as there have been no changes in the distribution list and the system certifies that the public education materials were distributed to the same list submitted previously.

(C) No later than three (3) months following the end of the monitoring period, each system must mail a sample copy of the consumer notification of tap results to the department along with a certification that the notification has been distributed in a manner consistent with the requirements of 10 CSR 60-15.060(4).

(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 within the first ten (10) days following 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.

(8) Reporting of ninetieth percentile lead and copper concentrations where the department calculates a system's ninetieth percentile concentrations. A water system is not required to report the ninetieth percentile lead and copper concentrations measured from among all lead and copper tap water samples collected during each monitoring period, as required by paragraph (1)(A)3. of this rule if:

(A) The department has previously notified the water system that it will calculate the water system's ninetieth percentile lead and copper concentrations, based on the lead and copper tap results submitted pursuant to paragraph (8)(B)1. of this rule, and has specified a date before the end of the applicable monitoring period by which the system must provide the results of lead and copper tap water samples;

(B) The system has provided the following information to the department by the date specified in subsection (8)(A) of this rule:

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)(C), (D), (E), (F), and/or (G) under which the site was selected for the system's sampling pool, pursuant to paragraph (1)(A)1. of this rule; and

2. An identification of sampling sites utilized during the current monitoring period that were not sampled during previous monitoring periods, and an explanation why sampling sites have changed; and

(C) The department has provided the results of the ninetieth percentile lead and copper calculations, in writing, to the water system before the end of the monitoring period.

10 CSR 60-7.020

AUTHORITY: section 640.100, RSMo Supp. 2011.* Original rule filed Aug. 4, 1992, effective 5/6/1993. Amended: Filed Feb. 1, 1996, effective 10/30/1996. Amended: Filed Aug. 14, 2001, effective 4/30/2002. Amended: Filed Oct. 17, 2011, effective 5/30/2012.

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