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Gross alpha particle activity (excluding radon and uranium)
Uranium
NR 809.07(2) (2)Maximum contaminant level goals (MCLGs) which are less than the MCLs are as follows: - See PDF for table PDF
Acrylamide   0.00001
Alachlor   0.0004
Benzene   0.001
Benzo[a]pyrene   0.000002
Carbon tetrachloride   0.0003
Chlordane   0.00003
Chlorite   0.8
Dibromochoromethane   0.06
Dibromochloropropane   0.00003
Di(2-ethylhexyl)phthalate   0.003
1,2-Dichloroethane   0.0004
1,2-Dichloropropane   0.0005
Epichlorohydrin   0.004
Ethylene Dibromide   0.0000004
Heptachlor   0.000008
Heptachlor Epoxide   0.000004
Hexachlorobenzene   0.00002
Pentachlorophenol   0.0003
Polychlorinated biphenyls (PCBs)   0.000005
2,3,7,8-TCDD (Dioxin)   2 x 10-10
Tetrachloroethylene   0.0007
Thallium   0.0005
Toxaphene   0.00003
1,1,2-Trichloroethane   0.003
Trichloroethylene   0.003
Vinyl chloride   0.000015
NR 809.07(3) (3)MCLGs which equal the MCLs are as follows: - See PDF for table PDF
Atrazine, (total chlorinated residue)1   0.003
Antimony   0.006
Asbestos   7 Million fibers/L
  (longer than 10
  micrometers)
Barium   2
Beryllium   0.004
Cadmium   0.005
Carbofuran   0.04
Chromium   0.1
Copper   1.3
Cyanide(as free Cyanide)   0.2
2,4-D   0.07
Dalapon   0.2
o-Dichlorobenzene   0.6
para-Dichlorobenzene   0.075
1,1-Dichloroethylene   0.007
cis-1,2-Dichloroethylene   0.07
trans-1,2-Dichloroethylene   0.1
Dichloromethane   0.005
Di(2-ethylhexyl)adipate   0.4
Dinoseb   0.007
Diquat   0.02
Endothall   0.1
Endrin   0.002
Ethylbenzene   0.7
Fluoride   4.0
Glyphosate   0.7
Hexachlorocyclopentadiene   0.05
Lindane   0.0002
Mercury   0.002
Methoxychlor   0.04
Monochlorobenzene   0.1
Nickel   0.1
Nitrate   10 (as Nitrogen)
Nitrite   1 (as Nitrogen)
Nitrate+Nitrite   10 (as Nitrogen)
Oxamyl   0.2
Picloram   0.5
Selenium   0.05
Simazine   0.004
Styrene   0.1
Toluene   1
1,2,4-Trichlorobenzene   0.07
1,1,1-Trichloroethane   0.2
1 Atrazine, total chlorinated residue includes atrazine and its metabolites, diaminoatrazine, diethylatrazine and deisopropylatrazine.
NR 809.07(4) (4)If a contaminant is not detected in a sample and if the limit of detection is higher than the MCLG, the MCLG shall be considered not to have been exceeded.
NR 809.07(5) (5)Notwithstanding any other provisions of this chapter, if a contaminant listed in sub. (2) is detected at a concentration above the MCLG but below the MCL for that contaminant, the following shall apply:
NR 809.07(5)(a) (a) The water supplier shall collect a confirmation sample to verify the presence of the contaminant, unless collected by the department.
NR 809.07(5)(b) (b) Based upon verified results and following a determination by the department on the need for further action as specified in par. (c), the water supplier shall provide public information to its customers indicating the analytical results achieved and the health effects of ingesting the substance at the concentration found.
NR 809.07(5)(c) (c) The department may require the water supplier to prepare and submit a report which does all of the following:
NR 809.07(5)(c)1. 1. Assesses the cause and significance of the problem.
NR 809.07(5)(c)2. 2. Analyzes the cost, effectiveness and feasibility of alternatives for treating the water or developing alternative water sources.
NR 809.07(5)(d) (d) If, based on the conclusions of the report if required under par. (c), the department determines that action is necessary to protect public health, it may require the water supplier to treat or replace the water source.
NR 809.07 History History: CR 09-073: cr. Register November 2010 No. 659, eff. 12-1-10; CR 15-049: am. (1) Register March 2016 No. 723, eff. 4-1-16.
NR 809.09 NR 809.09 Applicability of primary maximum contaminant levels to water sources. Except as otherwise allowed in this chapter, no water source exceeding any primary maximum contaminant level in this chapter may be connected to a public water system unless blending or treatment is provided such that the primary maximum contaminant level is not exceeded upon entry to the distribution system.
NR 809.09 History History: CR 09-073: cr. Register November 2010 No. 659, eff. 12-1-10.
NR 809.10 NR 809.10 Use of bottled water. Public water systems may not use bottled water to achieve compliance with an MCL. Bottled water may be used temporarily to avoid unreasonable risk to health.
NR 809.10 History History: CR 15-049: cr. Register March 2016 No. 723, eff. 4-1-16.
NR 809.11 NR 809.11 Inorganic chemical maximum contaminant levels and BATs.
NR 809.11(1)(1)Applicability. The following requirements apply to all of the maximum contaminant levels for inorganic contaminants:
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Published under s. 35.93, Stats. Updated on the first day of each month. Entire code is always current. The Register date on each page is the date the chapter was last published.