NR 809.04(86)(86) “System with a single service connection” means a public water system which supplies drinking water to consumers via a single service line. NR 809.04(87)(87) “Too numerous to count” means that the total number of bacterial colonies exceeds 200 on a 47-mm diameter membrane filter used for coliform detection. NR 809.04(88)(88) “Total organic carbon” or “TOC” means total organic carbon in mg/L measured using heat, oxygen, ultraviolet irradiation, chemical oxidants or combinations of these oxidants that convert organic carbon to carbon dioxide, rounded to 2 significant figures. NR 809.04(89)(89) “Transient non-community water system” or “TNCWS” means a non-community water system that serves at least 25 people at least 60 days of the year but does not regularly serve at least 25 of the same persons over 6 months per year. NR 809.04 NoteNote: Examples of transient non-community water systems include those serving taverns, motels, restaurants, churches, campgrounds and parks.
NR 809.04(89m)(89m) “Virus” means a virus of fecal origin which is infectious to humans by waterborne transmission. NR 809.04(90)(90) “Waterborne disease outbreak” means the significant occurrence of acute infectious illness, epidemiologically associated with the ingestion of water from a public water system which is deficient in treatment or is supplied from a contaminated source, as determined by the department or other local or state agency. NR 809.04(91)(91) “Water supplier” means any person who owns or operates a public water system. NR 809.04(92)(92) “Wholesale system” means a public water system that treats source water as necessary to produce finished water and then delivers some or all of that finished water to another public water system. Delivery may be through a direct connection or through the distribution system of one or more consecutive systems. NR 809.04(93)(93) “Year-round resident” means a resident who resides in the same living unit for 6 months per year or more. NR 809.04 HistoryHistory: CR 09-073: cr. Register November 2010 No. 659, eff. 12-1-10; corrections in (43) made under s. 13.92 (4) (b) 7., Stats., Register November 2010 No. 659; correction in (22) made under s. 13.92 (4) (b) 7., Stats., Register February 2012 No. 674; correction in (59) made under s. 13.92 (4) (b) 7., Stats., Register January 2013 No. 685; CR 15-049: cr. (2g), (2r), am. (5) to (8), (15), (19) (b), cr. (24m), am. (37), cr. (37m), (42m), (46m), (47g), (47r), am. (52), cr. (59m), am. (71), cr. (71m), (72m), (74m), renum. (93) to (89m), cr. (93) Register March 2016 No. 723, eff. 4-1-16; correction in (46m) made under s. 35.17, Stats., Register March 2016 No. 723; CR 21-088: cr. (59h) Register July 2022 No. 799, eff. 8-1-22. NR 809.05NR 809.05 Coverage. This chapter applies to each public water system, unless the public water system meets all of the following conditions: NR 809.05(1)(1) Consists only of distribution and storage facilities and does not have any collection or treatment facilities. NR 809.05(2)(2) Obtains all of its water from, but is not owned or operated by, a public water system to which the regulations in this chapter apply. NR 809.06NR 809.06 General requirements. Water suppliers shall conduct the minimum monitoring required by this chapter. The department may increase any monitoring requirements in this chapter, if the department determines that any increase is necessary to protect public health, safety or welfare. The department may require additional monitoring and analysis when necessary to verify water quality, treatment effectiveness, or to ensure representative sampling throughout an entire distribution system. The department may decrease any monitoring requirements in this chapter, if the department determines that such a decrease will not adversely affect protection of public health, safety or welfare. subch. I of ch. NR 809Subchapter I — Maximum Contaminant Levels, Monitoring and Analytical Requirements for Primary Drinking Water Contaminants NR 809.07NR 809.07 Maximum contaminant level goals for primary contaminants. NR 809.07(1)(1) Maximum contaminant level goals (MCLGs) are zero for the following contaminants: Giardia lamblia
Cryptosporidium
Legionella
Escherichia coli
Viruses
Lead
Arsenic
Chloroform
Bromodichloromethane
Bromoform
Bromate
Dichloroacetic acid
Combined radium-226 and radium-228
Beta particle and photon radioactivity
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: 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
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
