MT0000515 · Montana
MALMSTROM AIR FORCE BASE
Federal fiscal 2026Q3 · EPA violation and follow-up records
- Violation records shown
- 7
- EPA health-based flag
- 0
- Health-based records unresolved in this snapshot
- 0
- Monitoring and reporting records
- 6
Counties listed by EPA · Cascade 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 7 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 90 days. The interval uses the reporting periods and dates on file.
Monitoring or reporting · Resolved
Monitoring, Routine (RTCR)Violation 1154330 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start November 1, 2024 · period end November 30, 2024 · first reported February 18, 2025 · EPA return-to-compliance field November 30, 2024
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2449 December 23, 2024 Informal State Violation/Reminder Notice 2450 December 23, 2024 Informal State Public Notification requested 2452 December 23, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 1154329 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start April 1, 2024 · period end June 30, 2024 · first reported August 15, 2024 · EPA return-to-compliance field June 30, 2024
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2446 July 15, 2024 Informal State Violation/Reminder Notice 2447 July 15, 2024 Informal State Public Notification requested 2448 July 15, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 1154328 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start April 1, 2024 · period end June 30, 2024 · first reported August 15, 2024 · EPA return-to-compliance field June 30, 2024
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2446 July 15, 2024 Informal State Violation/Reminder Notice 2447 July 15, 2024 Informal State Public Notification requested 2448 July 15, 2024 Resolving State Compliance achieved Other or unclassified · Resolved
Consumer Confidence Report Complete Failure to ReportViolation 1154327 · Consumer Confidence Rule · Consumer Confidence RuleNoncompliance period start July 1, 2023 · period end July 26, 2023 · first reported September 22, 2023 · EPA return-to-compliance field July 26, 2023
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2444 July 11, 2023 Informal State Violation/Reminder Notice 2445 July 26, 2023 Resolving State Compliance achieved Monitoring or reporting · Resolved
Lead Consumer NoticeViolation 1154326 · Lead and Copper Rule · Lead and Copper RuleNoncompliance period start December 30, 2021 · period end January 5, 2022 · first reported September 22, 2023 · EPA return-to-compliance field January 5, 2022
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2442 January 4, 2022 Informal State Violation/Reminder Notice 2443 January 5, 2022 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 1154325 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start October 1, 2020 · period end December 31, 2020 · first reported September 22, 2023 · EPA return-to-compliance field December 31, 2020
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2441 January 13, 2021 Resolving State Compliance achieved 2439 January 19, 2021 Informal State Violation/Reminder Notice 2440 January 19, 2021 Informal State Public Notification requested Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 1154324 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start October 1, 2020 · period end December 31, 2020 · first reported September 22, 2023 · EPA return-to-compliance field December 31, 2020
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2441 January 13, 2021 Resolving State Compliance achieved 2439 January 19, 2021 Informal State Violation/Reminder Notice 2440 January 19, 2021 Informal State Public Notification requested
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