NR 809.118(1)(1) General. The water supplier for a community water system shall collect and analyze one sample per plant at the entry point to the distribution system for the determination of sodium concentration. Samples shall be collected and analyzed annually for public water systems utilizing surface water sources in whole or in part, and at least every 3 years for public water systems utilizing solely groundwater sources. The minimum number of samples required to be taken by the public water system shall be based on the number of plants used by the public water system, except that multiple wells drawing raw water from a single aquifer may, with department approval, be considered one plant for determining the minimum number of samples. The water supplier may be required by the department to collect and analyze water samples for sodium more frequently in locations where the sodium content is variable. NR 809.118(2)(2) Department notification. The water supplier shall report to the department the results of the analyses for sodium concentration within the first 10 days of the month following the month in which the sample results were received or within the first 10 days following the end of the required monitoring period as stipulated by the department, whichever is first. If more than annual sampling is required, the water supplier shall report the average sodium concentration within 10 days of the month following the month in which the analytical results of the last sample used for the annual average was received. NR 809.118(3)(3) Health officials notification. The water supplier shall notify appropriate local health officials of the sodium concentration by written notice by direct mail within 3 months of receipt of sample results. A copy of each notice required to be provided by this subsection and a list of health officials notified shall be sent to the department within 10 days of its issuance. NR 809.118 NoteNote: A primary maximum contaminant level has not been established for sodium.
NR 809.118 HistoryHistory: CR 09-073: cr. Register November 2010 No. 659, eff. 12-1-10. NR 809.119NR 809.119 Materials identification for corrosivity characteristics. Suppliers of water for community water systems shall identify whether the following construction materials are present in their distribution system and report their findings to the department: NR 809.119(1)(1) Lead from piping, solder, caulking, interior lining of distribution mains, alloys and home plumbing. NR 809.119(2)(2) Copper from piping and alloys, service lines and home plumbing. NR 809.119(3)(3) Galvanized piping, service lines and home plumbing. NR 809.119(4)(4) Ferrous piping materials such as cast iron and steel. NR 809.119 HistoryHistory: CR 09-073: cr. Register November 2010 No. 659, eff. 12-1-10. NR 809.20NR 809.20 Synthetic organic contaminant maximum contaminant levels and BATS. NR 809.20(1)(1) Applicability. The following maximum contaminant levels for synthetic organic contaminants apply to community water systems and non-transient non-community water systems. NR 809.20(2)(2) Best available treatment. The following are the BATs available for achieving compliance with the maximum contaminant levels for the organic contaminants listed in sub. (1): NR 809.20(2)(a)(a) Central treatment using granular activated carbon, except for glyphosate. NR 809.20(2)(b)(b) Packed tower aeration for dibromochloropropane, di(2-ethylhexyl)adipate, ethylene dibromide, and hexachlorocyclopentadiene. NR 809.20(2)(d)(d) Granular activated carbon, powdered activated carbon, ion exchange resins, nanofiltration, and reverse osmosis for PFOS and PFOA. NR 809.20(3)(3) Alternative treatment. A water supplier may use an alternative treatment not listed in sub. (2) if it is demonstrated to the department, using pilot studies or other means, that the alternative treatment is sufficient to achieve compliance with the MCLs in sub. (1). NR 809.20 HistoryHistory: CR 09-073: cr. Register November 2010 No. 659, eff. 12-1-10; CR 21-088: am. (1) Table, cr. (2) (d) Register July 2022 No. 799, eff. 8-1-22. NR 809.203NR 809.203 Analytical requirements for synthetic organic contaminants. NR 809.203(1)(1) Detection limits. Detection as used in this section shall be defined as greater than or equal to the following concentrations for each contaminant:
