R 325.10706 Collection and analysis of samples for coliform bacteria; noncommunity water system.

Rule 706. (1) A supplier of a noncommunity water system shall collect samples for total coliform analysis at sites representative of the water throughout the distribution system according to a written sample siting plan that is subject to department review and revision. (2) A supplier of a noncommunity water system shall monitor as follows: (a) A supplier of a noncommunity water system serving more than 1,000 people shall monitor at the same frequency as a like-sized community water system as specified in table 1 of R 325.10705. (b) A supplier of a noncommunity water system for which complete treatment is required under R 325.10611(1) shall monitor at the same frequency as a like-sized community water system as specified in table 1 of R 325.10705. (c) A supplier of a system using only groundwater not under the direct influence of surface water and serving fewer than 1,001 people shall monitor each calendar quarter that the system provides water to the public. (3) The department, based on a satisfactory sanitary survey of a noncommunity water system serving fewer than 1,001 people with a protected groundwater source, may vary the frequency of sampling. However, the frequency shall be at least once per year. The decision to reduce the monitoring frequency shall be in writing.