Wisconsin Administrative Code
Department of Natural Resources
NR 800 - Environmental Protection - Water Supply
Chapter NR 809 - Safe Drinking Water
Subchapter III - Maximum Contaminant Levels, Maximum Residual Disinfectant Levels, Monitoring, Analytical Requirements and Control of Disinfection Byproducts, Disinfection Residuals and Stage 1 and Stage 2 DBP
Section NR 809.66 - Requirements for remaining on reduced TTHM and HAA5 monitoring based on Stage 1 DBP results

Universal Citation: WI Admin Code § NR 809.66

Current through August 26, 2024

(1) REMAINING ON REDUCED MONITORING. A public water system may remain on reduced monitoring after the dates identified in s. NR 809.60(3) for compliance with this subchapter only if the public water system qualified for a 40/30 certification by EPA under Subpart U of 40 CFR 141.603, or received a very small system waiver under Subpart U of 40 CFR 141.604, and if the public water system meets the reduced monitoring criteria in NR 809.63(1) and all of the following criteria:

(a) The public water system does not change or add monitoring locations from those used for compliance monitoring under ss. NR 809.565(6) and 809.566.

(b) The public water system's monitoring locations under s. NR 809.62 have not been changed from the public water system's monitoring locations under s. NR 809.565(6) after the compliance dates identified in s. NR 809.60(3).

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