Wisconsin Administrative Code
Department of Natural Resources
NR 800 - Environmental Protection - Water Supply
Chapter NR 809 - Safe Drinking Water
Subchapter I - Maximum Contaminant Levels, Monitoring and Analytical Requirements for Primary Drinking Water Contaminants
Section NR 809.20 - Synthetic organic contaminant maximum contaminant levels and BATS
Universal Citation: WI Admin Code ยง NR 809.20
Current through August 26, 2024
(1) APPLICABILITY. The following maximum contaminant levels for synthetic organic contaminants apply to community water systems and non-transient non-community water systems.
| Contaminant | MCL (mg/L) |
| Alachlor | 0.002 |
| Atrazine | 0.003 |
| Benzo[a]pyrene | 0.0002 |
| Carbofuran | 0.04 |
| Chlordane | 0.002 |
| 2,4-D | 0.07 |
| Dalapon | 0.2 |
| Dibromochloropropane | 0.0002 |
| Di(2-ethylhexyl)adipate | 0.4 |
| Di(2-ethylhexyl)phthalate | 0.006 |
| Dinoseb | 0.007 |
| Diquat | 0.02 |
| Endothall | 0.1 |
| Endrin | 0.002 |
| Ethylene Dibromide | 0.00005 |
| Glyphosate | 0.7 |
| Heptachlor | 0.0004 |
| Heptachlor epoxide | 0.0002 |
| Hexachlorobenzene | 0.001 |
| Hexachlorocyclopentadiene | 0.05 |
| Lindane | 0.0002 |
| Methoxychlor | 0.04 |
| Oxamyl | 0.2 |
| Pentachlorophenol | 0.001 |
| Picloram | 0.5 |
| Polychlorinated biphenyls | 0.0005 |
| (PCBs) | |
| Simazine | 0.004 |
| 2,3,7,8-TCDD (Dioxin) | 3x10-8 |
| Toxaphene | 0.003 |
| 2,4,5-TP | 0.05 |
(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):
(a) Central treatment
using granular activated carbon, except for glyphosate.
(b) Packed tower aeration for
dibromochloropropane, di(2-ethylhexyl)adipate, ethylene dibromide, and
hexachlorocyclopentadiene.
(c)
Oxidation for glyphosate.
(d)
Granular activated carbon, powdered activated carbon, ion exchange resins,
nanofiltration, and reverse osmosis for PFOS and PFOA.
(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).
Disclaimer: These regulations may not be the most recent version. Wisconsin may have more current or accurate information. We make no warranties or guarantees about the accuracy, completeness, or adequacy of the information contained on this site or the information linked to on the state site. Please check official sources.
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