Operative Text
(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.
Mont. Admin. R. 37.111.113 establishes that when certain water-quality or capacity problems arise at a regulated establishment — such as contaminant levels exceeding state standards, detection of a pathogenic microorganism, or a confirmed disease outbreak linked to the water supply — the establishment must take corrective action within a timeframe set by the local regulatory authority. Acceptable corrective actions include shock disinfection, repair, or full replacement of the water supply system. Additionally, any time a water supply system is replaced or repaired, it must undergo shock disinfection before being returned to service.
Plain English — not legal advice.
Operators of regulated establishments covered by Mont. Admin. R. 37.111.113 generally maintain documentation of water testing results and respond promptly when the local regulatory authority identifies a deficiency or sets a corrective-action deadline. Compliant operators ensure that any repaired or replaced water supply system is shock disinfected before it is placed back into service, as the rule requires this step without exception. Keeping records of disinfection procedures, repair work, and communications with the local regulatory authority supports demonstrable compliance with this provision.
General guidance for property managers — not legal advice for your specific situation. Consult an attorney for advice on your case.
Mont. Admin. R. 37.111.113 gives tenants and occupants of regulated establishments a basis for understanding that management is obligated to address water-supply problems — including contamination, inadequate capacity, or a disease-outbreak link — within a deadline set by the local regulatory authority. If a water-quality concern arises, occupants may contact the local regulatory authority directly to report the issue or inquire whether a corrective-action order has been issued under this provision. Tenant-rights organizations and local health departments can help occupants understand what remedies or complaint processes may be available when water-supply obligations appear to go unmet.
General guidance for tenants — not legal advice for your specific situation. Consult a tenant-rights organization or attorney for advice on your case.
Generated October 26, 2026 — auto-generated, not yet human-reviewed. See /transparency for methodology.
Effective Timeline
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