MT0004082 · Montana

RIVER ROCK COUNTY WATER AND SEWER DIST

Federal fiscal 2026Q3 · EPA violation and follow-up records

Violation records shown: 17
EPA health-based flag: 0
Health-based records unresolved in this snapshot: 0
Monitoring and reporting records: 17

Counties listed by EPA · Gallatin 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 16 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 730 days. The interval uses the reporting periods and dates on file.

Monitoring or reporting · Resolved

Follow-up Or Routine LCR Tap M/RViolation 6595 · Lead and Copper Rule · Lead and Copper Rule

Noncompliance period start October 1, 2024 · period end September 25, 2025 · first reported December 19, 2024 · EPA return-to-compliance field September 25, 2025

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
5383700	November 7, 2024	Informal	State Violation/Reminder Notice
5383701	November 7, 2024	Informal	State Public Notification requested
5383702	September 25, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 6599 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start January 1, 2024 · period end December 31, 2024 · first reported February 18, 2025 · EPA return-to-compliance field December 31, 2024

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
5383709	January 23, 2025	Informal	State Violation/Reminder Notice
5383710	January 23, 2025	Informal	State Public Notification requested
5383711	January 23, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 6598 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start January 1, 2024 · period end December 31, 2024 · first reported February 18, 2025 · EPA return-to-compliance field December 31, 2024

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
5383709	January 23, 2025	Informal	State Violation/Reminder Notice
5383710	January 23, 2025	Informal	State Public Notification requested
5383711	January 23, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 6591 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start January 1, 2023 · period end October 18, 2023 · first reported November 15, 2023 · EPA return-to-compliance field October 18, 2023

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
5383686	October 18, 2023	Informal	State Violation/Reminder Notice
5383687	October 18, 2023	Informal	State Public Notification requested
5383688	October 18, 2023	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 6590 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start January 1, 2023 · period end October 18, 2023 · first reported November 15, 2023 · EPA return-to-compliance field October 18, 2023

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
5383686	October 18, 2023	Informal	State Violation/Reminder Notice
5383687	October 18, 2023	Informal	State Public Notification requested
5383688	October 18, 2023	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Lead Consumer NoticeViolation 6578 · Lead and Copper Rule · Lead and Copper Rule

Noncompliance period start December 30, 2021 · period end October 29, 2025 · first reported September 22, 2023 · EPA return-to-compliance field October 29, 2025

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
5383663	January 4, 2022	Informal	State Violation/Reminder Notice
5383664	October 29, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 6579 · Nitrate-Nitrite · Nitrate Rule

Noncompliance period start January 1, 2021 · period end December 31, 2021 · first reported September 22, 2023 · EPA return-to-compliance field December 31, 2021

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
5383665	February 2, 2022	Informal	State Violation/Reminder Notice
5383666	February 2, 2022	Informal	State Public Notification requested
5383667	September 29, 2022	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 6576 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start August 31, 2020 · period end August 30, 2021 · first reported November 10, 2021 · EPA return-to-compliance field August 30, 2021

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
5383658	August 30, 2021	Resolving	State Compliance achieved
5383656	October 20, 2021	Informal	State Violation/Reminder Notice
5383657	October 20, 2021	Informal	State Public Notification requested

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 6575 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start August 31, 2020 · period end August 30, 2021 · first reported November 10, 2021 · EPA return-to-compliance field August 30, 2021

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
5383658	August 30, 2021	Resolving	State Compliance achieved
5383656	October 20, 2021	Informal	State Violation/Reminder Notice
5383657	October 20, 2021	Informal	State Public Notification requested

Monitoring or reporting · Archived

Monitoring, RegularViolation 6593 · Asbestos · Inorganic Chemicals

Noncompliance period start January 1, 2020 · period end December 31, 2022 · first reported August 15, 2024 · EPA return-to-compliance field December 31, 2022

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
5383693	August 7, 2024	Informal	State Violation/Reminder Notice
5383694	August 7, 2024	Informal	State Public Notification requested

Monitoring or reporting · Resolved

Monitoring, RegularViolation 6589 · ETHYLENE DIBROMIDE · Synthetic Organic Chemicals

Noncompliance period start January 1, 2020 · period end December 31, 2022 · first reported August 15, 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
5383683	June 21, 2023	Informal	State Violation/Reminder Notice
5383684	June 21, 2023	Informal	State Public Notification requested
5383685	November 7, 2023	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 6588 · 1,2-DIBROMO-3-CHLOROPROPANE · Synthetic Organic Chemicals

Noncompliance period start January 1, 2020 · period end December 31, 2022 · first reported August 15, 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
5383683	June 21, 2023	Informal	State Violation/Reminder Notice
5383684	June 21, 2023	Informal	State Public Notification requested
5383685	November 7, 2023	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 6587 · Total Polychlorinated Biphenyls (PCB) · Synthetic Organic Chemicals

Noncompliance period start January 1, 2020 · period end December 31, 2022 · first reported August 15, 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
5383683	June 21, 2023	Informal	State Violation/Reminder Notice
5383684	June 21, 2023	Informal	State Public Notification requested
5383685	November 7, 2023	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 6586 · Glyphosate · Synthetic Organic Chemicals

Noncompliance period start January 1, 2020 · period end December 31, 2022 · first reported August 15, 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
5383683	June 21, 2023	Informal	State Violation/Reminder Notice
5383684	June 21, 2023	Informal	State Public Notification requested
5383685	November 7, 2023	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 6585 · Endothall · Synthetic Organic Chemicals

Noncompliance period start January 1, 2020 · period end December 31, 2022 · first reported August 15, 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
5383683	June 21, 2023	Informal	State Violation/Reminder Notice
5383684	June 21, 2023	Informal	State Public Notification requested
5383685	November 7, 2023	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 6584 · Diquat · Synthetic Organic Chemicals

Noncompliance period start January 1, 2020 · period end December 31, 2022 · first reported August 15, 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
5383683	June 21, 2023	Informal	State Violation/Reminder Notice
5383684	June 21, 2023	Informal	State Public Notification requested
5383685	November 7, 2023	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 6583 · CYANIDE · Inorganic Chemicals

Noncompliance period start January 1, 2020 · period end December 31, 2022 · first reported August 15, 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
5383683	June 21, 2023	Informal	State Violation/Reminder Notice
5383684	June 21, 2023	Informal	State Public Notification requested
5383685	November 7, 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