MT0004563 · Montana
GRANITE PARK WATER ASSOCIATION
Federal fiscal 2026Q3 · EPA violation and follow-up records
- Violation records shown
- 5
- EPA health-based flag
- 1
- Health-based records unresolved in this snapshot
- 0
- Monitoring and reporting records
- 3
Counties listed by EPA · Yellowstone 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 4 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 592.5 days. The interval uses the reporting periods and dates on file.
EPA health-based flag · Archived
Maximum Contaminant Level Violation, Single SampleViolation 2366 · Nitrate-Nitrite · Nitrate RuleNoncompliance period start January 1, 2024 · period end March 31, 2024 · first reported May 16, 2024 · EPA return-to-compliance field March 31, 2024
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3834 April 2, 2024 Informal State Violation/Reminder Notice 3835 April 2, 2024 Informal State Public Notification requested 3837 April 22, 2024 Informal State Other 3842 January 8, 2026 Formal State Administrative/Compliance Order without penalty issued Other or unclassified · Resolved
Consumer Confidence Report Complete Failure to ReportViolation 2362 · Consumer Confidence Rule · Consumer Confidence RuleNoncompliance period start July 1, 2023 · period end July 5, 2023 · first reported September 22, 2023 · EPA return-to-compliance field July 5, 2023
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3821 July 5, 2023 Resolving State Compliance achieved 3820 July 11, 2023 Informal State Violation/Reminder Notice Monitoring or reporting · Resolved
Monitoring, RegularViolation 2363 · Nitrate-Nitrite · Nitrate RuleNoncompliance period start April 1, 2023 · period end June 30, 2023 · first reported September 22, 2023 · EPA return-to-compliance field June 30, 2023
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3822 July 25, 2023 Informal State Violation/Reminder Notice 3823 July 25, 2023 Informal State Public Notification requested 3824 July 31, 2023 Resolving State Compliance achieved 3829 August 3, 2023 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 2359 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start September 1, 2018 · period end August 31, 2021 · first reported November 10, 2021 · EPA return-to-compliance field August 31, 2021
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3809 October 20, 2021 Informal State Violation/Reminder Notice 3810 October 20, 2021 Informal State Public Notification requested 3811 August 10, 2022 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 2358 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start September 1, 2018 · period end August 31, 2021 · first reported November 10, 2021 · EPA return-to-compliance field August 31, 2021
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3809 October 20, 2021 Informal State Violation/Reminder Notice 3810 October 20, 2021 Informal State Public Notification requested 3811 August 10, 2022 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