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(4) (4) Analytical methods. Analyses for sodium shall be performed as prescribed in s. NR 809.113 (1), Table A.

NR 809.118 Note Note: A primary maximum contaminant level has not been established for sodium.

NR 809.118 History History: CR 09-073: cr. Register November 2010 No. 659, eff. 12-1-10.

NR 809.119 NR 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(5) (5) Asbestos cement pipe.

NR 809.119(6) (6) Vinyl lined asbestos cement pipe.

NR 809.119(7) (7) Coal tar lined pipes and tanks.

NR 809.119 History History: CR 09-073: cr. Register November 2010 No. 659, eff. 12-1-10.

NR 809.20 NR 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.

- See PDF for table

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)(c) (c) Oxidation for glyphosate.

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 History History: 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 809.203 NR 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:

- See PDF for table

NR 809.203(2) (2) Analytical methods. Analysis for the synthetic organic contaminants listed in s. NR 809.20 shall be conducted using the methods prescribed in Table CM.

- See PDF for table