MT0000241 · Montana
HELENA WATER SYSTEM
Federal fiscal 2026Q3 · EPA violation and follow-up records
- Violation records shown
- 3
- EPA health-based flag
- 3
- Health-based records unresolved in this snapshot
- 0
- Monitoring and reporting records
- 0
Counties listed by EPA · Lewis and Clark County, Montana
Find the utility’s annual water quality report. For current advisories, check the utility or local drinking-water authority.
Violations and what followed
Among 3 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 91 days. The interval uses the reporting periods and dates on file.
EPA health-based flag · Resolved
Maximum Contaminant Level Violation, AverageViolation 1183487 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start January 1, 2023 · period end March 31, 2023 · first reported September 22, 2023 · EPA return-to-compliance field March 31, 2023
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 5310629 February 24, 2023 Informal State Violation/Reminder Notice 5310630 February 24, 2023 Informal State Public Notification requested 5310631 May 10, 2023 Resolving State Compliance achieved EPA health-based flag · Resolved
Maximum Contaminant Level Violation, AverageViolation 1183486 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start October 1, 2022 · period end December 31, 2022 · first reported September 22, 2023 · EPA return-to-compliance field December 31, 2022
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 5310626 November 25, 2022 Informal State Violation/Reminder Notice 5310627 November 25, 2022 Informal State Public Notification requested 5310628 May 10, 2023 Resolving State Compliance achieved EPA health-based flag · Resolved
Maximum Contaminant Level Violation, AverageViolation 1183485 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start July 1, 2022 · period end September 30, 2022 · first reported September 22, 2023 · EPA return-to-compliance field September 30, 2022
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 5310623 September 29, 2022 Informal State Violation/Reminder Notice 5310624 September 29, 2022 Informal State Public Notification requested 5310625 May 10, 2023 Resolving State Compliance achieved
EPA data and scope
How to read the records
The enforcement snapshot is federal fiscal 2026Q3. The EPA archive labels its violation file October 13, 2026. EPA says federal reporting can lag by several months. For current advisories, check your utility or local drinking-water authority.
- We matched active community water systems by public water system ID between EPA’s system search and SDWIS inventory. We show violations with a recorded noncompliance, initial reporting or return-to-compliance date from 2021 onward, plus earlier records listed as Addressed or Unaddressed.
- EPA’s health-based flag identifies violations of contaminant or disinfectant limits or treatment requirements. Monitoring and reporting violations describe required tests or reports. Neither category measures household exposure.
- Addressed means EPA records formal enforcement on a violation that remains unresolved in the snapshot. Unaddressed means no formal action is recorded for an unresolved violation. Resolved can mean compliance was restored, the rule ceased to apply, or further action was unnecessary. Archived is a separate status.
- We count a violation once per water system and group its distinct linked actions. Conflicting records are set aside. Places are EPA-listed search locations and can include mailing locations. Use the provider name and system ID to identify your service.
EPA data dictionary and files · EPA reporting and enforcement FAQ · Find an annual water quality report · How to get the report from your utility