Section NR 809.328 - Treatment technique compliance for groundwater source microbiological contaminants(1) TREATMENT TECHNIQUE VIOLATIONS FOR GROUNDWATER SYSTEMS. (a) A groundwater system with a significant deficiency is in violation of the treatment technique requirement if, within 120 days of the water supplier receiving written notice from the department of the significant deficiency or earlier if directed by the department, subd. 1. or 2. are not met. 1. The water supplier has not completed a corrective action in accordance with any applicable department plan approval processes under chs. NR 811 and 812, including any department specified interim actions.2. The public water system is not in compliance with a department-approved corrective action plan and schedule.(b) Unless the department invalidates an E. coli-positive groundwater source sample collected under s. NR 809.325, a public water system is in violation of the treatment technique requirement under s. NR 809.327 if within 120 days or earlier if directed by the department, the conditions of subd. 1. or 2 are not met. 1. The water supplier does not complete corrective action in accordance with any applicable department plan review processes under chs. NR 811 and 812, including department specified interim measures.2. The public water system is not in compliance with a department-approved corrective action plan and schedule.(c) A water supplier for a groundwater system subject to the requirements of s. NR 809.327(4) that fails to maintain at least 4-log treatment of viruses before or at the first customer for a groundwater source is in violation of the treatment technique requirement if the failure is not corrected within 4 hours of determining the public water system is not maintaining at least 4-log treatment of viruses before or at the first customer.(2) PUBLIC NOTIFICATION FOR TREATMENT TECHNIQUE VIOLATIONS. Water suppliers for groundwater systems shall give public notification under s. NR 809.952 for the treatment technique violations specified under this section.Wis. Admin. Code Department of Natural Resources NR 809.328
CR 09-073: cr. Register November 2010 No. 659, eff. 12-1-10.Amended by, CR 15-049: am. (1) (b) (intro.) Register March 2016 No. 723, eff.4/1/2016