NR 809.55(1)(d)2.2. If the department has waived prior approval of non-first-draw sample sites selected by the water supplier, identify, in writing, each site that did not meet the 6-hour minimum standing time and the length of standing time for that particular substitute sample collected pursuant to s. NR 809.547 (2) (e) and include this information with the lead and copper tap sample results required to be submitted pursuant to par. (c) 1. NR 809.55(1)(e)(e) No later than 60 days after the addition of a new source or any change in water treatment, unless the department requires earlier notification, a water supplier for a public water system deemed to have optimized corrosion control under s. NR 809.542 (2) (c), a public water system subject to reduced monitoring pursuant to s. NR 809.547 (4) (d), or a public water system subject to a monitoring waiver pursuant to s. NR 809.547 (7), shall send written documentation to the department describing the change. NR 809.55 NoteNote: In those instances where prior department approval of the treatment change or new source is not required, the water supplier are encouraged to provide the notification to the department beforehand to minimize the risk the treatment change or new source will adversely affect optimal corrosion control.
NR 809.55(1)(f)(f) The water supplier of any small water system applying for a monitoring waiver under s. NR 809.547 (7) or subject to a waiver granted pursuant to s. NR 809.547 (7) (c), shall provide the following information to the department in writing by the specified deadline: NR 809.55(1)(f)1.1. By the start of the first applicable monitoring period in s. NR 809.547 (4), the water supplier of any small water system applying for a monitoring waiver shall provide the documentation required to demonstrate that the public water system meets the waiver criteria of s. NR 809.547 (7) (a) and (b). NR 809.55(1)(f)3.3. No later than 60 days after the water supplier becomes aware that the public water system is no longer free of lead-containing or copper-containing material, as appropriate, the water supplier of each small water system with a monitoring waiver shall provide written notification to the department, setting forth the circumstances resulting in the lead-containing and copper-containing materials being introduced into the public water system and what corrective action, if any, the water supplier plans to remove these materials. NR 809.55(1)(f)4.4. The water supplier of any small water system with a waiver granted prior to April 11, 2000 and that has not previously met the requirements of s. NR 809.547 (7) (b) shall provide the information required by that paragraph as required by the department. NR 809.55(1)(g)(g) The water supplier for each groundwater system that limits water quality parameter monitoring to a subset of entry points under s. NR 809.548 (3) (c) shall provide, by the commencement of the 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 public water system. NR 809.55(2)(2) Source water monitoring reporting requirements. NR 809.55(2)(a)(a) A water supplier shall report the sampling results for all source water samples collected in accordance with s. NR 809.549 within the first 10 days following the end of each source water monitoring period, i.e., annually, per compliance period, per compliance cycle specified in s. NR 809.549. NR 809.55(2)(b)(b) With the exception of the first round of source water sampling conducted pursuant to s. NR 809.549 (2), the water supplier shall specify any site which was not sampled during previous monitoring periods, and include an explanation of why the sampling point has changed. NR 809.55(3)(3) Corrosion control treatment reporting requirements. By the applicable dates under s. NR 809.542, the water supplier shall report the following information: NR 809.55(3)(a)(a) For water supplier of public water systems demonstrating that they have already optimized corrosion control, information required in s. NR 809.542 (2) (b) or (c). NR 809.55(3)(b)(b) For water supplier of public water systems required to optimize corrosion control, their recommendation regarding optimal corrosion control treatment under s. NR 809.543 (1). NR 809.55(3)(c)(c) For water supplier of public water systems required to evaluate the effectiveness of corrosion control treatments under s. NR 809.543 (3), the information required by that section. NR 809.55(3)(d)(d) For water supplier of public water systems required to install optimal corrosion control approved by the department under s. NR 809.543 (4), a letter certifying that the water supplier has completed installing that treatment. NR 809.55(4)(4) Source water treatment reporting requirements. By the applicable dates in s. NR 809.544, water supplier shall provide the following information to the department: NR 809.55(4)(b)(b) For water suppliers required to install source water treatment under s. NR 809.544 (2) (b), a letter certifying that the water supplier has completed installing the treatment approved by the department within 24 months after the department approved the treatment. NR 809.55(5)(5) Lead service line replacement reporting requirements. Water suppliers shall report the following information to the department to demonstrate compliance with the requirements of s. NR 809.545: NR 809.55(5)(a)(a) No later than 12 months after the end of a monitoring period in which a public water system exceeds the lead action level in sampling referred to in s. NR 809.545 (1), the water supplier must submit written documentation to the department of the material evaluation conducted as required in s. NR 809.547 (1), identify the initial number of lead service lines in the distribution system of the public water system at the time the public water system exceeded the lead action level, and provide the public water system’s schedule for annually replacing at least 7% of the initial number of lead service lines in its distribution system. NR 809.55(5)(b)(b) No later than 12 months after the end of a monitoring period in which a public water system exceeds the lead action level in sampling referred to in s. NR 809.545 (1), and every 12 months thereafter, the water supplier shall demonstrate to the department in writing that the public water system has done one of the following: NR 809.55(5)(b)1.1. Replaced in the previous 12 months at least 7% of the initial lead service lines, or a greater number of lines specified by the department under s. NR 809.545 (6), in the distribution system of the public water system. NR 809.55(5)(b)2.2. Conducted sampling which demonstrates that the lead concentration in all service line samples from an individual line, taken pursuant to s. NR 809.547 (2) (c), is less than or equal to 0.015 mg/L. In such cases, the total number of lines replaced or which meet the criteria in s. NR 809.545 (3), or both, shall equal at least 7% of the initial number of lead lines identified under sub. (5) (a), or the percentage specified by the department under s. NR 809.545 (5). NR 809.55(5)(c)(c) The annual letter submitted to the department under par. (b) shall contain all of the following information: NR 809.55(5)(c)1.1. The number of lead service lines scheduled to be replaced during the previous year of the water supplier’s replacement schedule. NR 809.55(5)(c)2.2. The number and location of each lead service line replaced during the previous year of the water supplier‘s replacement schedule. NR 809.55(5)(c)3.3. If measured, the water lead concentration and location of each lead service line sampled, the sampling method and the date of sampling. NR 809.55(5)(d)(d) The water supplier for any public water system which collects lead service line samples following partial lead service line replacement required by s. NR 809.545 shall report the results to the department within the first 10 days of the month following the month in which the water supplier receives the laboratory results, or as specified by the department. The department may waive this requirement to report these monitoring results. Water suppliers shall also report any additional information as specified by the department, and in a time and manner prescribed by the department, to verify that all partial lead service line replacement activities have taken place. NR 809.55(6)(6) Public education program reporting requirements. By December 31st of each year, the water supplier for any public water system that is subject to the public education requirements in s. NR 809.546 shall submit a letter to the department demonstrating that the water supplier has delivered the public education materials that meet the content requirements in s. NR 809.546 (1) and (2) and the delivery requirements in s. NR 809.546 (3). This information shall include a list of all the newspapers, radio stations, television stations, facilities and organizations to which the water supplier delivered public education materials during the previous year. The water supplier shall submit the letter required by this subsection annually for as long as the public water system exceeds the lead action level. NR 809.55(6)(a)(a) The water supplier for any public water system that is subject to the public education requirements in s. NR 809.546 shall, within ten days after the end of each period in which the public water system is required to perform public education in accordance with s. NR 809.546 (2), send written documentation to the department that contains all of the following: NR 809.55(6)(a)2.2. A list of all the newspapers, radio stations, television stations, and facilities and organizations to which the water supplier delivered public education materials during the period in which the public water system was required to perform public education tasks. NR 809.55(6)(b)(b) Unless required by the department, a water supplier that previously has submitted the information required by par. (a) 2. is not required to resubmit the information required by par. (a) 2., as long as there have been no changes in the distribution list and the water supplier certifies that the public education materials were distributed to the same list submitted previously. NR 809.55(6)(c)(c) No later than 3 months following the end of the monitoring period, each water supplier shall 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 s. NR 809.546 (4). NR 809.55(7)(7) Reporting of additional monitoring data. Any water supplier that collects sampling data in addition to that required by this subchapter shall report the results to the department within the first 10 days following the end of the applicable monitoring period under ss. NR 809.547, 809.548 and 809.549 during which the samples are collected. NR 809.55(8)(8) Reporting of 90th percentile lead and copper concentrations where the department calculates a public water system’s 90th percentile concentrations. The water supplier of a public water system is not required to report the 90th percentile lead and copper concentrations measured from among all lead and copper tap water samples collected during each monitoring period, as required by sub. (1) (c) 4. if any of the following are met: NR 809.55(8)(a)(a) The department has previously notified the water supplier that it will calculate the water system’s 90th percentile lead and copper concentrations, based on the lead and copper tap results submitted pursuant to par. (b) 1., and has specified a date before the end of the applicable monitoring period by which the water supplier shall provide the results of lead and copper tap water samples. NR 809.55(8)(b)(b) The water supplier has provided all of the following information to the department by the date specified in par. (a): NR 809.55(8)(b)2.2. 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. NR 809.55(8)(c)(c) The department has provided the results of the 90th percentile lead and copper calculations, in writing, to the water supplier before the end of the monitoring period. NR 809.55 HistoryHistory: CR 09-073: cr. Register November 2010 No. 659, eff. 12-1-10; corrections in (1) (a), (b), (c) 4., 8., (d) (intro.) and (5) (b) 2. made under s. 13.92 (4) (b) 7., Stats., Register November 2010 No. 659; CR 15-049: am. (1) (c) (intro.), 3., (6) (a) (intro.), 1. Register March 2016 No. 723, eff. 4-1-16. subch. III of ch. NR 809Subchapter III — Maximum Contaminant Levels, Maximum Residual Disinfectant Levels, Monitoring, Analytical Requirements and Control of Disinfection Byproducts, Disinfection Residuals and Stage 1 and Stage 2 DBP NR 809.561NR 809.561 Maximum residual disinfectant level goals (MRDLGs), and maximum contaminant levels (MCLs) for disinfection byproducts, maximum residual disinfectant levels (MRDLs) and best available treatment. NR 809.561(1)(1) Maximum residual disinfectant level goals. MRDLGs for disinfectants are as follows: NR 809.561(2)(2) Maximum contaminant levels. The maximum contaminant levels (MCLs) for disinfection byproducts are as follows: NR 809.561(3)(a)(a) The maximum residual disinfectant levels (MRDLs) for disinfectants are as follows: NR 809.561(3)(b)(b) To achieve compliance with the maximum residual disinfectant levels identified in this subsection, water suppliers shall control treatment processes by reducing disinfectant demand and by controlling disinfection treatment processes to reduce disinfectant levels. NR 809.561(3)(c)(c) Free chlorine or total chlorine may be measured for demonstrating compliance with the chlorine MRDL. Combined chlorine or total chlorine may be used for demonstrating compliance with the chloramine MRDL. NR 809.561(4)(4) Best available treatment. The department, pursuant to section 1412 of the Safe Drinking Water Act and related regulations applicable to public water systems, identifies the following as the best available treatment technology, treatment techniques or other means available for achieving compliance with the maximum contaminant levels for disinfection byproducts identified in sub. (1): NR 809.561(5)(5) Alternative treatment. The department may approve the use of alternative treatment not listed in sub. (4), if a water supplier demonstrates to the department, using pilot studies or other means, that the alternative treatment is sufficient to achieve compliance with the MCLs in sub. (2). NR 809.561 HistoryHistory: CR 09-073: cr. Register November 2010 No. 659, eff. 12-1-10; CR 15-049: cr. (3) (c), am. (4) Register March 2016 No. 723, eff. 4-1-16. NR 809.562NR 809.562 General requirements for disinfection byproducts and disinfection residuals Stage 1 DBP. NR 809.562(1)(1) General. The following requirements establish criteria under which water supplier for community water systems, or CWSs, and nontransient, noncommunity water systems, or NTNCWSs, which add a chemical disinfectant to the water in any part of the drinking water treatment process shall modify their practices to meet MCLs and MRDLs in s. NR 809.561 (2) and (3) (a), respectively, and shall meet the treatment technique requirements for disinfection byproduct precursors in s. NR 809.561 (4). Water suppliers for transient noncommunity water systems, or TNCWSs, that use chlorine dioxide as a disinfectant or oxidant shall modify their practices to meet the MRDL for chlorine dioxide in s. NR 809.561 (3) (a) according to the criteria established in this section. MCLs have been established for TTHM and HAA5 and treatment technique requirements for disinfection byproduct precursors to limit the levels of known and unknown disinfection byproducts which may have adverse health effects. These disinfection byproducts may include chloroform, bromodichloromethane, dibromochloromethane, bromoform, dichloroacetic acid, and trichloroacetic acid. NR 809.562(2)(2) Compliance timeframes. Unless otherwise noted, all public water systems shall comply with the requirements of this subchapter as follows: NR 809.562(2)(a)(a) All public water systems serving 10,000 or more persons that are CWSs or NTNCWSs and that are supplied by a surface water source or by a groundwater source under the direct influence of surface water shall comply with this subchapter beginning January 1, 2002. NR 809.562(2)(b)(b) Public water systems serving fewer than 10,000 persons that are CWSs or NTNCWSs and that are supplied by a surface water source or by a groundwater source under the direct influence of surface water and all public water systems using only groundwater not under the direct influence of surface water shall comply with this subchapter beginning January 1, 2004. NR 809.562(2)(c)(c) Public water systems serving 10,000 or more persons that are transient NCWSs and use chlorine dioxide as a disinfectant or oxidant and are supplied by a surface water source or by a groundwater source under the direct influence of surface water shall comply with any requirements for chlorine dioxide and chlorite in this subchapter beginning January 1, 2002. NR 809.562(2)(d)(d) Public water systems that are transient NCWSs and use chlorine dioxide as a disinfectant or oxidant and that serve fewer than 10,000 persons and are supplied by a surface water source or by a groundwater source under the direct influence of surface water or that are public water systems using only groundwater not under the direct influence of surface water shall comply with any requirements for chlorine dioxide in this subchapter beginning January 1, 2004. NR 809.562(2)(e)(e) A consecutive system that does not add a disinfectant but delivers water that has been treated with a primary or residual disinfectant other than ultraviolet light, shall comply with analytical and monitoring requirements for chlorine and chloramines in s. NR 809.565 (6) (a) and the compliance requirements in s. NR 809.566 (3) (a) beginning April 1, 2009 and shall report monitoring results under s. NR 809.567 (3). NR 809.562(3)(3) Operator certification. Each CWS and NTNCWS regulated under s. NR 809.561 shall be operated by qualified personnel who meet the requirements specified in ch. NR 114, subchs. I and III and are included in a department register of qualified operators. NR 809.562(4)(4) Response to microbiological contamination. Notwithstanding the MRDLs in s. NR 809.561 (3) (a), water suppliers for public water systems may increase in the distribution system residual disinfectant levels of chlorine or chloramines, but not chlorine dioxide, to a level and for a time necessary to protect public health, to address specific microbiological contamination problems caused by circumstances such as, but not limited to, distribution line breaks, storm run-off events, source water contamination events or cross-connection events. NR 809.562(5)(5) Public notification of MCL or MRDL violations. The water supplier of a public water system shall provide public notification in compliance with subch. VII when the MCL or MRDL or disinfectant residual is exceeded. NR 809.562(6)(6) Required additional health information. Water suppliers for CWSs that detect TTHM above 0.080 mg/l, but are not in violation of the MCL in s. NR 809.561 (2), based on an annual average, monitored and calculated under the provisions of s. NR 809.565, shall provide copies of health effects language prescribed in subch. VII and s. NR 809.835 to the users of the CWS in the CCR. NR 809.562 HistoryHistory: CR 09-073: cr. Register November 2010 No. 659, eff. 12-1-10; CR 15-049: am. (3) Register March 2016 No. 723, eff. 4-1-16; correction in (3) made under s. 35.17, Stats., Register March 2016 No. 723, eff. 4-1-16. NR 809.563NR 809.563 Analytical requirements for disinfection byproducts and disinfection residuals Stage 1 DBP and Stage 2 DBP. NR 809.563(1)(1) General. Water suppliers shall use only the analytical methods specified in this section, or otherwise approved by EPA for monitoring under this subchapter, to demonstrate compliance with the requirements of this subchapter. NR 809.563(2)(2) Approved analytical methods for disinfectant residuals. Water suppliers shall measure residual disinfectant concentrations for total chlorine, free chlorine, combined chlorine chloramines, and chlorine dioxide by the methods listed in Table R. Water suppliers may also measure residual disinfectant concentrations for chlorine, chloramines and chlorine dioxide by using N,N-diethly-p-phenylenediamine (DPD) colorimetric using a colorimeter as prescribed in the approved methods. NR 809.563(3)(3) Approved analytical methods for disinfectant byproducts. Water suppliers shall measure disinfection byproducts by the methods, as modified by the footnotes, prescribed in Table S. Samples for TTHM shall be dechlorinated upon collection to prevent further production of trihalomethanes, according to the procedures described in the methods, except acidification is not required if only THMs or TTHMs are to be determined. Samples for maximum TTHM potential shall not be dechlorinated or acidified, and shall be held for 7 days at 25° C or above prior to analysis. Samples for bromate analyzed using EPA method 321.8 samples must be preserved at the time of sampling with 50 mg ethylenediamine (EDA)/L of sample and must be analyzed within 28 days. Samples for TTHM and HAA5 shall be collected using the containers, preservative and holding times specified in s. NR 809.203 (4) Table D. In all cases, samples should be analyzed as soon after collection as possible. 1 X indicates method is approved for measuring specified disinfectant residual. Free chlorine or total chlorine may be measured for demonstrating compliance with the chlorine MRDL and combined chlorine, or total chlorine may be measured for demonstrating compliance with the chloramine MRDL.
2 Standard Methods for the Examination of Water and Wastewater, 19th edition (1995), 20th edition (1998), 21st edition (2005), 22nd edition (2012). Available from American Public Health Association, 800 I Street, NW., Washington, DC, 20001-3710.
3 The Standard Methods Online version that is approved is indicated by the last two digits in the method number which is the year of approval by the Standard Method Committee. Standard Methods Online are available athttp://www.standardmethods.org. 4 Available from ASTM International, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2859, or http://astm.org. 1 P&T = purge and trap; GC = gas chromatography; ELCD = electrolytic conductivity detector; PID = photoionization detector; MS = mass spectrometer; LLE = liquid/liquid extraction; ECD = electron capture detector; SPE = solid phase extraction; IC = ion chromatography; ICP-MS= inductively coupled plasma/mass spectrometer.
2 Standard Methods for the Examination of Water and Wastewater, 19th edition (1995), 20th edition (1998), 21st edition (2005), 22nd edition (2012). Available from American Public Health Association, 800 I Street, NW., Washington, DC, 20001-3710.
3 Available from ASTM International, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2859, or http://astm.org., 4 If TTHMs are the only analytes being measured in the sample, then a PID is not required.
5 The samples must be extracted within 14 days of sample collection.
6 Ion chromatography and post column reaction or IC/ICP-MS must be used for monitoring of bromate for purposes of demonstrating eligibility of reduced monitoring.
7 Samples must be preserved at the time of sampling with 50 mg ethylenediamine (EDA)/L of sample and must be analyzed within 28 days.
8 Amperometric titration or spectrophotometry may be used for routine daily monitoring of chlorite at the entrance to the distribution system, as prescribed in NR 809.565(3)(a)1. Ion chromatography must be used for routine monthly monitoring of chlorite and additional monitoring of chlorite in the distribution system, as prescribed in NR 809.565(30(a) 2. and. NR 809.565 (3) (a)3.
9 The Standard Methods Online version that is approved is indicated by the last two digits in the method number which is the year of approval by the Standard Method Committee. Standard Methods Online are available at http://www.standardmethods.org. NR 809.563(4)(4) Laboratory certification for disinfectant byproducts. Laboratories that are certified by the department or EPA shall conduct the analysis under this section for disinfection byproducts. NR 809.563(4)(a)(a) To receive certification to conduct analyses for the contaminants in this subchapter, a laboratory shall analyze performance evaluation samples approved by the department or EPA at least once during each consecutive 12-month period by each method for which a laboratory desires certification. NR 809.563(4)(b)(b) When analyzing performance evaluation samples, the laboratory shall achieve quantitative results on the PE sample analyses that are within the acceptance limits in Table T.
