(1) An establishment must take appropriate corrective action, which may include shock disinfection, replacement, or repair of the water supply system, within a period specified by the local regulatory authority when:
- (a) a water sample exceeds a maximum contaminant level as specified in ARM Title 17, chapter 38, subchapter 2;
- (b) the supply does not have the capacity to provide enough water for drinking, cooking, personal hygiene, laundry, cleaning, and wastewater disposal;
- (c) the local regulatory authority reports to an establishment that the establishment's water supply system is vulnerable to contamination based on a site visit;
- (d) a pathogenic microorganism is detected; or
- (e) a confirmed disease outbreak is associated with the water supply through investigation.
- (2) When a water supply is replaced or repaired, the water supply system must be shock disinfected before the system is placed into service.
Authorizing statute(s): 50-51-103, MCA
Implementing statute(s): 50-51-103, MCA
History: NEW, 2012 MAR p. 1042, Eff. 5/25/12; AMD, 2022 MAR p. 1750, Eff. 9/10/22.