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 809.243 - Analytical requirements for volatile organic contaminants
Current through August 26, 2024
(1) DETECTION LIMITS. For the purposes of this section, detection is defined as >0.0005 mg/l, except for vinyl chloride for which detection is defined as >0.0002 mg/L.
(2) ANALYTICAL METHODS. Analysis for the volatile organic contaminants listed in s. NR 809.24 shall be conducted using the methods prescribed in Table E.
Table E
SDWA Approved Methodology for Volatile Organic Contaminants
|
Contaminant Regulated Parameters: |
EPA Methods 1,2 |
|
Benzene |
502.2, 524.2, 524.3 |
|
Carbon tetrachloride |
502.2, 524.2, 551.1,524.3 |
|
Chlorobenzene |
502.2, 524.2, 524.3 |
|
1,2-Dichlorobenzene |
502.2, 524.2, 524.3 |
|
1,4-Dichlorobenzene |
502.2, 524.2, 524.3 |
|
1,2-Dichloroethane |
502.2, 524.2, 524.3 |
|
cis-Dichloroethylene |
502.2, 524.2, 524.3 |
|
trans-Dichloroethylene |
502.2, 524.2, 524.3 |
|
Dichloromethane |
502.2, 524.2, 524.3 |
|
1,2-Dichloropropane |
502.2, 524.2, 524.3 |
|
Ethylbenzene |
502.2, 524.2, 524.3 |
|
Styrene |
502.2, 524.2, 524.3 |
|
Tetrachloroethylene |
502.2, 524.2, 551.1, 524.3 |
|
1,1,1-Trichloroethane |
502.2, 524.2, 551.1, 524.3 |
|
Trichloroethylene |
502.2, 524.2, 551.1, 524.3 |
|
Toluene |
502.2, 524.2, 524.3 |
|
1,2,4-Trichlorobenzene |
502.2, 524.2, 524.3 |
|
1,1-Dichloroethylene |
502.2, 524.2, 524.3 |
|
1,1,2-Trichloroethane |
502.2, 524.2, 551.1, 524.3 |
|
Vinyl chloride |
502.2, 524.2, 524.3 |
|
Xylenes (total) |
502.2, 524.2, 524.3 |
1 Procedures for Methods 502.2, 524.2, and 551.1 are in Methods for the Determination of Organic Compounds in Drinking Water Supplement III, EPA/600/R-95-131, August 1995. These documents are available from the National Technical Information Service (NTIS), U.S. Department of Commerce, 5285 Port Royal Road, Springfield, Virginia 22161. The toll free number is 1-800-553-6847.
2 EPA Method 524.3, Version 1.0. "Measurement of Purgeable Organic Compounds in Water by Capillary Column Gas Chromatography/Mass Spectrometry," June 2009. EPA 815B09009. Available at http://epa.gov/safewater/methods/analyticalmethods_ogwdw.html.
(3) SAMPLE COLLECTION. Samples shall be collected using containers, preservatives and holding times specified in s. NR 809.203(4) Table D. In all cases, samples should be analyzed as soon after collection as possible.
(4) LABORATORY CERTIFICATION. Analyses under this section shall only be conducted by laboratories that have received certification under ch. NR 149 or have been approved by EPA.
(5) LABORATORY EVALUATION. Each certified laboratory shall determine the method detection limit (MDL) at which it is capable of detecting VOCs as defined in federal law under 40 CFR, Part 136, Appendix B. The maximum acceptable MDL is 0.0005 mg/L for all VOCs except vinyl chloride, which is 0.0002 mg/L.
