R 325.10704 Coliform sampling.

Rule 704. (1) Until March 31, 2016, community and noncommunity water systems shall collect samples and cause analyses to be made for coliform bacteria to determine compliance with the state drinking water standards. Beginning April 1, 2016, the total coliform provisions of R 325.10704a to R 325.10704k are applicable, with supplies required to begin regular monitoring at the same frequency as the supply-specific frequency required on March 31, 2016. (2) Until March 31, 2016, the department may require samples to be collected and analyzed for coliform bacteria for type III public water systems at a frequency as may be considered necessary by the department. Beginning April 1, 2016, supplies shall comply with R 325.10704a(2). (3) If any routine or repeat sample is total coliform-positive, the supplier shall analyze that total coliform-positive culture medium to determine if fecal coliforms are present. Analysis for E. coli may be performed instead of fecal coliforms. (4) All of the following provisions apply until March 31, 2016: (a) R 325.10705 collection and analysis of samples for coliform bacteria; community water systems. (b) R 325.10706 collection and analysis of samples for coliform bacteria; noncommunity water system. (c) R 325.10709 special purpose and invalidated samples. (5) All of the following provisions apply until all required repeat monitoring under R 325.10707 and fecal coliform or E. coli testing under subrule (3) of this rule that was initiated by a total coliform-positive sample taken before April 1, 2016 is completed, as well as analytical method, reporting, recordkeeping, public notification, and consumer confidence report requirements associated with that monitoring and testing: (a) R 325.10707 repeat monitoring for total coliform. (b) R 325.10707a invalidation of total coliform samples. (c) Subrule (3) of this rule, analyze culture for fecal coliforms. (d) R 325.10707b general notification requirements for total coliform and fecal coliform/escherichia coli (E. coli).