ID5420021 · Idaho
FILER WATER WORKS
Federal fiscal 2026Q3 · EPA violation and follow-up records
- Violation records shown
- 11
- EPA health-based flag
- 4
- Health-based records unresolved in this snapshot
- 0
- Monitoring and reporting records
- 7
Counties listed by EPA · Twin Falls County, Idaho
Find the utility’s annual water quality report. For current advisories, check the utility or local drinking-water authority.
Violations and what followed
Among 10 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 89.5 days. The interval uses the reporting periods and dates on file.
Monitoring or reporting · Resolved
Notification, Known or Potential LSLViolation 3520 · LEAD AND COPPER RULE REVISIONS · Lead and Copper Rule RevisionsNoncompliance period start July 2, 2025 · period end September 8, 2025 · first reported December 19, 2025 · EPA return-to-compliance field September 8, 2025
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 163055 August 13, 2025 Informal State Violation/Reminder Notice 163056 August 16, 2025 Informal State Public Notification requested 163057 September 8, 2025 Resolving State Compliance achieved Monitoring or reporting · Resolved
Lead Consumer NoticeViolation 3519 · Lead and Copper Rule · Lead and Copper RuleNoncompliance period start April 1, 2025 · period end November 5, 2024 · first reported September 12, 2025 · EPA return-to-compliance field November 5, 2024
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 163058 November 5, 2024 Resolving State Compliance achieved 163049 April 11, 2025 Informal State Violation/Reminder Notice 163050 April 14, 2025 Informal State Public Notification requested Monitoring or reporting · Resolved
Monitoring, Source Water (GWR)Violation 3496 · E. COLI · Ground Water RuleNoncompliance period start April 9, 2023 · period end May 9, 2023 · first reported September 6, 2023 · EPA return-to-compliance field May 9, 2023
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 163048 May 9, 2023 Resolving State Compliance achieved 163035 June 6, 2023 Informal State Violation/Reminder Notice 163036 June 9, 2023 Informal State Public Notification requested Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 3495 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts RuleNoncompliance period start October 1, 2022 · period end November 10, 2022 · first reported March 17, 2023 · EPA return-to-compliance field November 10, 2022
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 163047 November 10, 2022 Resolving State Compliance achieved 163031 February 21, 2023 Informal State Violation/Reminder Notice 163032 February 24, 2023 Informal State Public Notification requested Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 3493 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts RuleNoncompliance period start July 1, 2022 · period end September 30, 2022 · first reported December 6, 2022 · 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 163029 November 9, 2022 Informal State Violation/Reminder Notice 163047 November 10, 2022 Resolving State Compliance achieved 163030 November 12, 2022 Informal State Public Notification requested Monitoring or reporting · Resolved
Monitoring, Routine (RTCR)Violation 3483 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start September 1, 2021 · period end September 30, 2021 · first reported November 22, 2021 · EPA return-to-compliance field September 30, 2021
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 163025 November 2, 2021 Informal State Violation/Reminder Notice 163026 November 5, 2021 Informal State Public Notification requested 163028 February 14, 2022 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 3484 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts RuleNoncompliance period start July 1, 2021 · period end September 30, 2021 · first reported November 22, 2021 · EPA return-to-compliance field September 30, 2021
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 163023 November 4, 2021 Informal State Violation/Reminder Notice 163024 November 7, 2021 Informal State Public Notification requested 163028 February 14, 2022 Resolving State Compliance achieved EPA health-based flag · Resolved
Maximum Contaminant Level Violation, AverageViolation 3481 · Arsenic · Arsenic RuleNoncompliance period start April 1, 2021 · period end June 30, 2021 · first reported August 24, 2021 · EPA return-to-compliance field June 30, 2021
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 163018 July 9, 2021 Informal State Violation/Reminder Notice 163019 July 12, 2021 Informal State Public Notification requested 163027 December 7, 2021 Resolving State Compliance achieved EPA health-based flag · Resolved
Maximum Contaminant Level Violation, AverageViolation 3480 · Arsenic · Arsenic RuleNoncompliance period start January 1, 2021 · period end March 31, 2021 · first reported May 19, 2021 · 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 162985 April 2, 2018 Formal State Administrative/Compliance Order without penalty issued 163015 February 10, 2021 Informal State Violation/Reminder Notice 163016 February 13, 2021 Informal State Public Notification requested 163017 March 24, 2021 Formal State Administrative/Compliance Order without penalty issued 163027 December 7, 2021 Resolving State Compliance achieved EPA health-based flag · Resolved
Maximum Contaminant Level Violation, AverageViolation 3479 · Arsenic · Arsenic RuleNoncompliance period start October 1, 2020 · period end December 31, 2020 · first reported March 2, 2021 · 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 162985 April 2, 2018 Formal State Administrative/Compliance Order without penalty issued 163013 January 15, 2021 Informal State Violation/Reminder Notice 163014 January 18, 2021 Informal State Public Notification requested 163017 March 24, 2021 Formal State Administrative/Compliance Order without penalty issued 163027 December 7, 2021 Resolving State Compliance achieved EPA health-based flag · Resolved
Maximum Contaminant Level Violation, AverageViolation 3482 · Arsenic · Arsenic RuleNoncompliance period start January 1, 2020 · period end March 31, 2020 · first reported November 22, 2021 · EPA return-to-compliance field March 31, 2020
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 163022 June 9, 2021 Informal State Public Notification received 163020 September 10, 2021 Informal State Violation/Reminder Notice 163021 September 13, 2021 Informal State Public Notification requested 163027 December 7, 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