ID5420058 · Idaho
TWIN FALLS CITY OF
Federal fiscal 2026Q3 · EPA violation and follow-up records
- Violation records shown
- 8
- EPA health-based flag
- 0
- Health-based records unresolved in this snapshot
- 0
- Monitoring and reporting records
- 8
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 5 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 894 days. The interval uses the reporting periods and dates on file.
Monitoring or reporting · Archived
Monitoring and Reporting (DBP)Violation 4910 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts RuleNoncompliance period start February 1, 2026 · period end February 28, 2026 · first reported June 26, 2026 · EPA return-to-compliance field February 28, 2026
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 168412 May 19, 2026 Informal State Violation/Reminder Notice 168413 May 22, 2026 Informal State Public Notification requested Monitoring or reporting · Archived
Monitoring, Routine (RTCR)Violation 4908 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start February 1, 2026 · period end February 28, 2026 · first reported June 26, 2026 · EPA return-to-compliance field February 28, 2026
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 168410 April 20, 2026 Informal State Violation/Reminder Notice 168411 April 23, 2026 Informal State Public Notification requested Monitoring or reporting · Resolved
Monitoring, RegularViolation 4881 · Nitrate · Nitrate RuleNoncompliance period start January 1, 2023 · period end December 31, 2023 · first reported February 28, 2024 · EPA return-to-compliance field December 31, 2023
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 168386 February 12, 2024 Informal State Violation/Reminder Notice 168387 February 15, 2024 Informal State Public Notification requested 168388 December 11, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Initial, Follow-up, or Routine Source Water M/RViolation 4872 · Lead and Copper Rule · Lead and Copper RuleNoncompliance period start July 1, 2022 · period end December 11, 2024 · first reported June 6, 2023 · EPA return-to-compliance field December 11, 2024
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 168377 February 28, 2023 Informal State Violation/Reminder Notice 168378 March 3, 2023 Informal State Public Notification requested 168389 December 11, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Initial, Follow-up, or Routine Source Water M/RViolation 4871 · Lead and Copper Rule · Lead and Copper RuleNoncompliance period start July 1, 2022 · period end December 11, 2024 · first reported June 6, 2023 · EPA return-to-compliance field December 11, 2024
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 168379 February 28, 2023 Informal State Violation/Reminder Notice 168380 March 3, 2023 Informal State Public Notification requested 168389 December 11, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 4874 · Nitrate · Nitrate RuleNoncompliance period start January 1, 2022 · period end December 31, 2022 · first reported June 6, 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 168381 May 8, 2023 Informal State Violation/Reminder Notice 168382 May 11, 2023 Informal State Public Notification requested 168388 December 11, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, Source Water (GWR)Violation 4852 · E. COLI · Ground Water RuleNoncompliance period start February 17, 2015 · period end November 16, 2023 · first reported March 27, 2017 · EPA return-to-compliance field November 16, 2023
5 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 168365 April 6, 2015 Informal State Violation/Reminder Notice 168367 April 6, 2015 Informal State Violation/Reminder Notice 168366 April 9, 2015 Informal State Public Notification requested 168368 April 9, 2015 Informal State Public Notification requested 168383 November 16, 2023 Resolving State Compliance achieved Monitoring or reporting · Archived
Monitoring, RegularViolation 4870 · Nitrite · Nitrate RuleNoncompliance period start January 1, 2014 · period end December 31, 2022 · first reported March 17, 2023 · 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 168375 February 22, 2023 Informal State Violation/Reminder Notice 168376 February 25, 2023 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