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 809.203 - Analytical requirements for synthetic organic contaminants

Current through June 24, 2024
(1) DETECTION
				  LIMITS. Detection as used in this section shall be defined as greater than or
				  equal to the following concentrations for each contaminant:
Contaminant
Detection Limit (mg/L)
1. Alachlor
0.0002
2. Aldicarb
0.0005
3. Aldicarb sulfoxide
0.0005
4. Aldicarb sulfone
0.0008
5. Atrazine
0.0001
6. Benzo[a]pyrene
0.00002
7. Carbofuran
0.0009
8. Chlordane
0.0002
9. 2,4-D
0.0001
10. Dalapon
0.001
11. Dibromochloropropane
0.00002
12. Di(2-ethylhexyl)adipate
0.0006
13. Di(2-ethylhexyl)phthalate
0.0006
14. Dinoseb
0.0002
15. Diquat
0.0004
16. Endothall
0.009
17. Endrin
0.00001
18. Ethylene dibromide
0.00001
19. Glyphosate
0.006
20. Heptachlor
0.00004
21. Heptachlor epoxide
0.00002
22. Hexachlorobenzene
0.0001
23. Hexachlorocyclopentadiene
0.0001
24. Lindane
0.00002
25. Methoxychlor
0.0001
26. Oxamyl
0.002
27. Picloram
0.0001
28. Polychlorinated biphenyls (PCBs as
								  decchlorobiphenyls)
0.0001
29. Pentachlorophenol
0.00004
30. Simazine
0.00007
31. Toxaphene
0.001
32. 2,3,7,8-TCDD (Dioxin)
0.000000005
33. 2,4,5-TP (Silvex)
0.0002
(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.
Table CM
SDWA Approved Methodology for Synthetic Organic
					 Contaminants
Contaminant
EPA
								  Methods1
SM9
SM
								  Online10
ASTM
Other
Regulated Parameters:
Synthetic Organic Chemicals
2,3,7,8-TCDD (dioxin)
1613
2,4-D 
								  2 (as acids, salts and
								  esters)
515.2, 555, 515.1, 515.3, 515.4
D5317-93, 98 (Reapproved 2003)
2,4,5-TP 
								  2 (Silvex)
515.2, 555, 515.1, 515.3, 515.4
6640 B,
6640 B-01,
								  B-0611
D5317-93, 98 (Reapproved 2003)
Alachlor
507, 525.2, 525.32
								  508.1, 5058, 551.1
Atrazine 
								  3
507, 525.2, 525.3 508.1,
								  5058, 551.1, 536
Syngenta4AG-625
Benzo(a)pyrene
525.2, 525.3, 550, 550.1
Carbofuran
531.1, 531.2
66105 6610 B
6610 B-04
Chlordane
508, 525.2, 525.3, 508.1, 505
Dalapon
552.1 515.1, 552.2, 515.3, 515.4, 552.3,
								  557
6640 B
6640 B-01, 06
Di(2-ethylhexyl)adipate
506, 525.2, 525.3
Di(2-ethylhexyl)phthalate
506, 525.2, 525.3
Dibromochloropropane (DBCP)
504.1, 551.1,
								  524.39
Dinoseb
515.2, 555, 515.1,
515.3, 515.4
6640 B
6640 B-01, 06
Diquat
549.2
Endothall
548.1
Endrin
508, 525.2, 525.3, 508.1, 505, 551.1
Ethylene dibromide (EDB)
504.1, 551.1, 524.3
Glyphosate
547
66516 6651 B
6651 B-01, B-06
Heptachlor
508, 525.2, 525.3, 508.1, 505, 551.1
Heptachlor Epoxide
508, 525.2, 525.3, 508.1, 505, 551.1
Hexachlorobenzene
508, 525.2, 525.3, 508.1, 505, 551.1
Hexachlorocyclopentadiene
508, 525.2, 525.3, 508.1, 505, 551.1
Lindane
508, 525.2, 525.3, 508.1, 505, 551.1
Methoxychlor
508, 525.2, 525.3, 508.1, 505, 551.1
Oxamyl
531.1, 531.2
66105 6610 B
6610 B-04
PCBs (as decachlorobiphenyl)
508A7
(as Aroclors)
508.1, 508, 525.2, 525.3, 505
Pentachlorophenol
515.2, 525.2, 525.3, 555, 515.1, 515.3,
								  515.4
D5317-93, 98 (Reapproved 2003)
Picloram 
								  2
515.2, 555, 515.1, 515.3, 515.4
6640 B
6640 B-01
D5317-93, 98 s (Reapproved 2003)
Simazine
507, 525.2, 525.3, 523, 536, 508.1,
								  5058, 551.1
Toxaphene
508, 508.1, 525.2, 525.3, 505
Unregulated Parameters:
Aldicarb
531.1, 531.2
66105 6610 B
6610 B-04
Aldicarb sulfone
531.1, 531.2
66105 6610 B
6610 B-04
Aldicarb Sulfoxide
531.1, 531.2
66105 6610 B
6610 B-04
Aldrin
505, 508, 525.2, 525.3, 508.1
Butachlor
507, 525.2, 525.3
Carbaryl
531.1, 531.2
66105 6610 B
6610 B-04
Dicamba
515.1, 555, 515.2, 515.3, 515.4
6640 B
6640 B-01, B-06
Dieldrin
505, 508, 525.2, 525.3, 508.1
3-Hydroxcarbofuran
531.1, 531.2
66105 6610 B
6610 B-04
Methomyl
531.1, 531.2
66105 6610 B
6610 B-04
Metolachlor
507, 525.2, 525.3, 508.1
Metribuzin
507, 525.2, 525.3, 508.1
Propachlor
507, 525.2, 525.3, 508.1
1 EPA methods are available at
http://epa.gov/safewater/methods/analyticalmethods_ogwdw.htm
.
2 Accurate determination of the
					 chlorinated esters requires hydrolysis of the sample as described in EPA
					 Methods 515.1, 515.2, 515.3, 515.4 and 555 and ASTM Method D 5317-93, 98
					 (Reapproved 2003).
3 Substitution of the detector
					 specified in Method 505, 507, 508, or 508.1 for the purpose of achieving lower
					 detection limits is allowed as follows: Either an electron capture or nitrogen
					 phosphorus detector may be used provided all regulatory requirements and
					 quality control criteria are met.
4 This method may not be used
					 for the analysis of atrazine in any system where chlorine dioxide is used for
					 drinking water treatment. In samples from all other systems, any result
					 generated by Method AG-625 that is greater than one-half the maximum
					 contaminant level (MCL) (in other words, greater than 0.0015 mg/L or 1.5
					 ì/L) must be confirmed using another approved method for this
					 contaminant and should use additional volume of the original sample collected
					 for compliance monitoring. In instances where a result from Method AG-625
					 triggers such confirmatory testing, the confirmatory result is to be used to
					 determine compliance.
5 Method 6610 shall be followed
					 in accordance with the "Supplement to the 18th edition of Standard Methods for
					 the Examination of Water and Wastewater", 1994, or with the 19th edition of
					 Standard Methods for the Examination of Water and Wastewater, 1995, APHA;
					 either publication may be used. This incorporation by reference was approved by
					 the Director of the Federal Register in accordance with
					 5
					 USC 552(a) and 1 CFR Part
					 51. Copies may be obtained from the American Public Health Association, 1015
					 Fifteenth Street, N.W., Washington, D.C., 2005. Other required analytical test
					 procedures germane to conducting these analyses are contained in Technical
					 Notes on Drinking Water Methods, EPA/600/R-94-173, October 1994, NTIS
					 PB95-104766.
6 Method 6651 shall be followed
					 in accordance with the "Standard Methods for the Examination of Water and
					 Wastewater", 18th Edition, 1992, and 19th edition, 1995, American Public Health
					 Association. This incorporation by reference was approved by the Director of
					 the Federal Register in accordance with
					 5
					 U.S.C. 552(a) and 1 CFR Part
					 51. Copies may be obtained from the American Public Health Association, 1015
					 Fifteenth Street, N.W., Washington, D.C., 20005.
7 Method 505 or 508 can be used
					 as a screen for PCBs. Method 508A shall be used to quantitate PCBs as
					 decachlorobiphenyl if detected in Method 505 or 508. PCBs are qualitatively
					 identified as Aroclors and measured for compliance purposes as
					 decachlorobiphenyl.
8 A nitrogen-phosphorus detector
					 should be substituted for the electron capture detector in Method 505 (or a
					 different approved method should be used) to determine alachlor, atrazine and
					 simizine, if lower detection limits are required.
9
Standard Methods for
					 the Examination of Water and Wastewater,
18th edition (1992), 19th
					 edition (1995), 20th edition (1998),
					 21sd edition (2005), 22nd
					 edition (
2012).
Available from American Public Health
					 Association, 800 I Street, NW., Washington, DC, 20001-3710.
10 Standard Methods online are
					 available at
http://www.standardmethods.org
.
					 The year in which each method was approved by the Standard Methods Committee is
					 designated by the last two digits in the method number. The methods listed are
					 the only online versions that may be used.
(3) PCB ANALYSIS. Analysis for PCBs shall be
				  conducted as follows:
(a) Each water supplier
				  that monitors for PCBs shall have each sample analyzed by a laboratory
				  certified under ch. NR 149 using Method 505, 508, 508.1 or 525.2 as specified
				  in Table CM and must achieve the required detection limits in this
				  subsection.
(b) If one or more of 7
				  PCB Aroclors are detected as designated in this paragraph in any sample
				  analyzed using Methods 505 and 508, the sample shall be reanalyzed using Method
				  508A to quantitate PCBs as decachlorobiphenyl.
(c) Compliance with the PCB MCL shall be
				  determined based upon the quantitative results of analyses using Method 508A.
Aroclor
Detection limit (mg/L)
1016
0.00008
1221
0.02
1232
0.0005
1242
0.0003
1248
0.0001
1254
0.0001
1260
0.0002