(a) Subject to (b) and (c) below, and Env-Dw 709.09, the owner of an NCWS that is served solely by one or more protected water sources and that either is not a seasonal system or is a seasonal system that is described in Env-Dw 709.01(d) shall monitor for bacteria based on the number of persons served, as follows:
- (1) If the NCWS serves 1,000 persons or fewer per month, the owner shall collect one sample during each calendar quarter that the NCWS provides water to the public; and
- (2) If the NCWS serves more than 1,000 persons during any month, the owner shall take the number of samples for total coliforms per month as required for a like-sized CWS, as specified in Env-Dw 709.05(a).
- (b) If the number of persons served by an NCWS is event-driven, such as a racetrack, fairgrounds, or concert venue, the owner shall take the number of samples for total coliforms as a like-sized CWS as specified in Env-Dw 709.05(a), using the average daily population calculated over a one-month period.
- (c) An NCWS supplied by surface water or groundwater under the direct influence of surface water shall monitor for coliform bacteria monthly.
Source. #9700, eff 5-1-10; ss by #10771, eff 2-1-15; ss by 14343, eff 8-22-25, EXPIRES: 8-22-35