MT0000400 · Montana

TIBER COUNTY WATER DISTRICT

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

Violation records shown: 29
EPA health-based flag: 4
Health-based records unresolved in this snapshot: 0
Monitoring and reporting records: 24

Counties listed by EPA · Pondera 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 29 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 353 days. The interval uses the reporting periods and dates on file.

Monitoring or reporting · Resolved

Monitoring, RegularViolation 1548668 · Arsenic · Arsenic Rule

Noncompliance period start January 1, 2024 · period end December 19, 2024 · first reported February 18, 2025 · EPA return-to-compliance field December 19, 2024

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
171322	December 19, 2024	Resolving	State Compliance achieved
171320	January 17, 2025	Informal	State Violation/Reminder Notice
171321	January 17, 2025	Informal	State Public Notification requested

Monitoring or reporting · Resolved

Monitoring, RegularViolation 1548667 · Styrene · Volatile Organic Chemicals

Noncompliance period start January 1, 2024 · period end December 19, 2024 · first reported February 18, 2025 · EPA return-to-compliance field December 19, 2024

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
171319	December 19, 2024	Resolving	State Compliance achieved
171317	January 17, 2025	Informal	State Violation/Reminder Notice
171318	January 17, 2025	Informal	State Public Notification requested

Monitoring or reporting · Resolved

Monitoring, RegularViolation 1548666 · Ethylbenzene · Volatile Organic Chemicals

Noncompliance period start January 1, 2024 · period end December 19, 2024 · first reported February 18, 2025 · EPA return-to-compliance field December 19, 2024

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
171319	December 19, 2024	Resolving	State Compliance achieved
171317	January 17, 2025	Informal	State Violation/Reminder Notice
171318	January 17, 2025	Informal	State Public Notification requested

Monitoring or reporting · Resolved

Monitoring, RegularViolation 1548665 · Toluene · Volatile Organic Chemicals

Noncompliance period start January 1, 2024 · period end December 19, 2024 · first reported February 18, 2025 · EPA return-to-compliance field December 19, 2024

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
171319	December 19, 2024	Resolving	State Compliance achieved
171317	January 17, 2025	Informal	State Violation/Reminder Notice
171318	January 17, 2025	Informal	State Public Notification requested

Monitoring or reporting · Resolved

Monitoring, RegularViolation 1548664 · Benzene · Volatile Organic Chemicals

Noncompliance period start January 1, 2024 · period end December 19, 2024 · first reported February 18, 2025 · EPA return-to-compliance field December 19, 2024

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
171319	December 19, 2024	Resolving	State Compliance achieved
171317	January 17, 2025	Informal	State Violation/Reminder Notice
171318	January 17, 2025	Informal	State Public Notification requested

Monitoring or reporting · Resolved

Monitoring, RegularViolation 1548663 · CHLOROBENZENE · Volatile Organic Chemicals

Noncompliance period start January 1, 2024 · period end December 19, 2024 · first reported February 18, 2025 · EPA return-to-compliance field December 19, 2024

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
171319	December 19, 2024	Resolving	State Compliance achieved
171317	January 17, 2025	Informal	State Violation/Reminder Notice
171318	January 17, 2025	Informal	State Public Notification requested

Monitoring or reporting · Resolved

Monitoring, RegularViolation 1548662 · Tetrachloroethylene · Volatile Organic Chemicals

Noncompliance period start January 1, 2024 · period end December 19, 2024 · first reported February 18, 2025 · EPA return-to-compliance field December 19, 2024

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
171319	December 19, 2024	Resolving	State Compliance achieved
171317	January 17, 2025	Informal	State Violation/Reminder Notice
171318	January 17, 2025	Informal	State Public Notification requested

Monitoring or reporting · Resolved

Monitoring, RegularViolation 1548661 · 1,1,2-Trichloroethane · Volatile Organic Chemicals

Noncompliance period start January 1, 2024 · period end December 19, 2024 · first reported February 18, 2025 · EPA return-to-compliance field December 19, 2024

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
171319	December 19, 2024	Resolving	State Compliance achieved
171317	January 17, 2025	Informal	State Violation/Reminder Notice
171318	January 17, 2025	Informal	State Public Notification requested

Monitoring or reporting · Resolved

Monitoring, RegularViolation 1548660 · Trichloroethylene · Volatile Organic Chemicals

Noncompliance period start January 1, 2024 · period end December 19, 2024 · first reported February 18, 2025 · EPA return-to-compliance field December 19, 2024

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
171319	December 19, 2024	Resolving	State Compliance achieved
171317	January 17, 2025	Informal	State Violation/Reminder Notice
171318	January 17, 2025	Informal	State Public Notification requested

Monitoring or reporting · Resolved

Monitoring, RegularViolation 1548659 · 1,2-Dichloropropane · Volatile Organic Chemicals

Noncompliance period start January 1, 2024 · period end December 19, 2024 · first reported February 18, 2025 · EPA return-to-compliance field December 19, 2024

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
171319	December 19, 2024	Resolving	State Compliance achieved
171317	January 17, 2025	Informal	State Violation/Reminder Notice
171318	January 17, 2025	Informal	State Public Notification requested

Monitoring or reporting · Resolved

Monitoring, RegularViolation 1548658 · Carbon tetrachloride · Volatile Organic Chemicals

Noncompliance period start January 1, 2024 · period end December 19, 2024 · first reported February 18, 2025 · EPA return-to-compliance field December 19, 2024

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
171319	December 19, 2024	Resolving	State Compliance achieved
171317	January 17, 2025	Informal	State Violation/Reminder Notice
171318	January 17, 2025	Informal	State Public Notification requested

Monitoring or reporting · Resolved

Monitoring, RegularViolation 1548657 · 1,1,1-Trichloroethane · Volatile Organic Chemicals

Noncompliance period start January 1, 2024 · period end December 19, 2024 · first reported February 18, 2025 · EPA return-to-compliance field December 19, 2024

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
171319	December 19, 2024	Resolving	State Compliance achieved
171317	January 17, 2025	Informal	State Violation/Reminder Notice
171318	January 17, 2025	Informal	State Public Notification requested

Monitoring or reporting · Resolved

Monitoring, RegularViolation 1548656 · 1,2-Dichloroethane · Volatile Organic Chemicals

Noncompliance period start January 1, 2024 · period end December 19, 2024 · first reported February 18, 2025 · EPA return-to-compliance field December 19, 2024

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
171319	December 19, 2024	Resolving	State Compliance achieved
171317	January 17, 2025	Informal	State Violation/Reminder Notice
171318	January 17, 2025	Informal	State Public Notification requested

Monitoring or reporting · Resolved

Monitoring, RegularViolation 1548655 · trans-1,2-Dichloroethylene · Volatile Organic Chemicals

Noncompliance period start January 1, 2024 · period end December 19, 2024 · first reported February 18, 2025 · EPA return-to-compliance field December 19, 2024

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
171319	December 19, 2024	Resolving	State Compliance achieved
171317	January 17, 2025	Informal	State Violation/Reminder Notice
171318	January 17, 2025	Informal	State Public Notification requested

Monitoring or reporting · Resolved

Monitoring, RegularViolation 1548654 · 1,1-Dichloroethylene · Volatile Organic Chemicals

Noncompliance period start January 1, 2024 · period end December 19, 2024 · first reported February 18, 2025 · EPA return-to-compliance field December 19, 2024

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
171319	December 19, 2024	Resolving	State Compliance achieved
171317	January 17, 2025	Informal	State Violation/Reminder Notice
171318	January 17, 2025	Informal	State Public Notification requested

Monitoring or reporting · Resolved

Monitoring, RegularViolation 1548653 · Vinyl chloride · Volatile Organic Chemicals

Noncompliance period start January 1, 2024 · period end December 19, 2024 · first reported February 18, 2025 · EPA return-to-compliance field December 19, 2024

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
171319	December 19, 2024	Resolving	State Compliance achieved
171317	January 17, 2025	Informal	State Violation/Reminder Notice
171318	January 17, 2025	Informal	State Public Notification requested

Monitoring or reporting · Resolved

Monitoring, RegularViolation 1548652 · p-Dichlorobenzene · Volatile Organic Chemicals

Noncompliance period start January 1, 2024 · period end December 19, 2024 · first reported February 18, 2025 · EPA return-to-compliance field December 19, 2024

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
171319	December 19, 2024	Resolving	State Compliance achieved
171317	January 17, 2025	Informal	State Violation/Reminder Notice
171318	January 17, 2025	Informal	State Public Notification requested

Monitoring or reporting · Resolved

Monitoring, RegularViolation 1548651 · o-Dichlorobenzene · Volatile Organic Chemicals

Noncompliance period start January 1, 2024 · period end December 19, 2024 · first reported February 18, 2025 · EPA return-to-compliance field December 19, 2024

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
171319	December 19, 2024	Resolving	State Compliance achieved
171317	January 17, 2025	Informal	State Violation/Reminder Notice
171318	January 17, 2025	Informal	State Public Notification requested

Monitoring or reporting · Resolved

Monitoring, RegularViolation 1548650 · DICHLOROMETHANE · Volatile Organic Chemicals

Noncompliance period start January 1, 2024 · period end December 19, 2024 · first reported February 18, 2025 · EPA return-to-compliance field December 19, 2024

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
171319	December 19, 2024	Resolving	State Compliance achieved
171317	January 17, 2025	Informal	State Violation/Reminder Notice
171318	January 17, 2025	Informal	State Public Notification requested

Monitoring or reporting · Resolved

Monitoring, RegularViolation 1548649 · Xylenes, Total · Volatile Organic Chemicals

Noncompliance period start January 1, 2024 · period end December 19, 2024 · first reported February 18, 2025 · EPA return-to-compliance field December 19, 2024

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
171319	December 19, 2024	Resolving	State Compliance achieved
171317	January 17, 2025	Informal	State Violation/Reminder Notice
171318	January 17, 2025	Informal	State Public Notification requested

Monitoring or reporting · Resolved

Monitoring, RegularViolation 1548648 · cis-1,2-Dichloroethylene · Volatile Organic Chemicals

Noncompliance period start January 1, 2024 · period end December 19, 2024 · first reported February 18, 2025 · EPA return-to-compliance field December 19, 2024

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
171319	December 19, 2024	Resolving	State Compliance achieved
171317	January 17, 2025	Informal	State Violation/Reminder Notice
171318	January 17, 2025	Informal	State Public Notification requested

Monitoring or reporting · Resolved

Monitoring, RegularViolation 1548647 · 1,2,4-Trichlorobenzene · Volatile Organic Chemicals

Noncompliance period start January 1, 2024 · period end December 19, 2024 · first reported February 18, 2025 · EPA return-to-compliance field December 19, 2024

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
171319	December 19, 2024	Resolving	State Compliance achieved
171317	January 17, 2025	Informal	State Violation/Reminder Notice
171318	January 17, 2025	Informal	State Public Notification requested

Monitoring or reporting · Resolved

Monitoring, RegularViolation 1548646 · Nitrate-Nitrite · Nitrate 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
171309	January 16, 2025	Informal	State Violation/Reminder Notice
171310	January 16, 2025	Informal	State Public Notification requested
171311	January 17, 2025	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 1548643 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start October 1, 2023 · period end December 31, 2023 · first reported February 15, 2024 · EPA return-to-compliance field December 31, 2023

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
171308	December 16, 2019	Informal	State Other
171307	May 5, 2020	Formal	State Administrative/Compliance Order without penalty issued
171303	February 13, 2024	Informal	State Violation/Reminder Notice
171304	February 13, 2024	Informal	State Public Notification requested
171306	February 13, 2024	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 1548642 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start July 1, 2023 · period end September 13, 2023 · first reported September 22, 2023 · EPA return-to-compliance field September 13, 2023

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
171302	December 16, 2019	Informal	State Other
171301	May 5, 2020	Formal	State Administrative/Compliance Order without penalty issued
171298	September 13, 2023	Informal	State Violation/Reminder Notice
171299	September 13, 2023	Informal	State Public Notification requested
171300	September 13, 2023	Resolving	State Compliance achieved

Other or unclassified · Resolved
Consumer Confidence Report Complete Failure to ReportViolation 1548641 · Consumer Confidence Rule · Consumer Confidence Rule
Noncompliance period start July 1, 2023 · period end July 14, 2023 · first reported September 22, 2023 · EPA return-to-compliance field July 14, 2023

2 linked actions

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
171296 July 11, 2023 Informal State Violation/Reminder Notice
171297 July 14, 2023 Resolving State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
171296	July 11, 2023	Informal	State Violation/Reminder Notice
171297	July 14, 2023	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 1548640 · Nitrate-Nitrite · Nitrate Rule

Noncompliance period start January 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
171293	January 18, 2023	Informal	State Violation/Reminder Notice
171294	January 18, 2023	Informal	State Public Notification requested
171295	January 27, 2023	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 1548639 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts Rule

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

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
171292	December 16, 2019	Informal	State Other
171291	May 5, 2020	Formal	State Administrative/Compliance Order without penalty issued
171288	March 12, 2021	Informal	State Violation/Reminder Notice
171289	March 12, 2021	Informal	State Public Notification requested
171290	May 12, 2021	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 1548638 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start October 1, 2020 · period end December 31, 2020 · first reported September 22, 2023 · EPA return-to-compliance field December 31, 2020

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
171287	December 16, 2019	Informal	State Other
171286	May 5, 2020	Formal	State Administrative/Compliance Order without penalty issued
171283	December 8, 2020	Informal	State Violation/Reminder Notice
171284	December 8, 2020	Informal	State Public Notification requested
171285	May 12, 2021	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