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 809.64 - Additional disinfection byproducts requirements for consecutive systems under Stage 2 DBP

A consecutive system that does not add a disinfectant but receives and delivers water that has been treated with a primary or residual disinfectant other than ultraviolet light, shall comply with analytical and monitoring requirements for chlorine and chloramines in s. NR 809.565(4) (a) and the compliance requirements in s. NR 809.566(3) (a) beginning April 1, 2009, unless required to comply earlier by the department, and shall report monitoring results under s. NR 809.567(3) (a).