IA8340099 · Iowa
IRWIN MUNICIPAL SUPPLY
Federal fiscal 2026Q3 · EPA violation and follow-up records
- Violation records shown
- 6
- EPA health-based flag
- 0
- Health-based records unresolved in this snapshot
- 0
- Monitoring and reporting records
- 6
Counties listed by EPA · Shelby County, Iowa
Find the utility’s annual water quality report. For current advisories, check the utility or local drinking-water authority.
Violations and what followed
Among 6 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 30 days. The interval uses the reporting periods and dates on file.
Monitoring or reporting · Resolved
Monitoring, Routine (RTCR)Violation 65526 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start November 1, 2025 · period end November 30, 2025 · first reported June 17, 2026 · EPA return-to-compliance field November 30, 2025
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 406925 December 8, 2025 Resolving State Compliance achieved 406927 December 18, 2025 Informal State Public Notification requested 406928 December 18, 2025 Informal State Formal Notice of Violation issued 406926 December 26, 2025 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring, Routine (RTCR)Violation 254925 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start May 1, 2025 · period end May 31, 2025 · first reported September 19, 2025 · EPA return-to-compliance field May 31, 2025
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 406922 June 18, 2025 Informal State Formal Notice of Violation issued 406923 June 18, 2025 Informal State Public Notification requested 406921 June 25, 2025 Resolving State Compliance achieved 406924 July 10, 2025 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring, Routine (RTCR)Violation 145625 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start December 1, 2024 · period end December 31, 2024 · first reported March 26, 2025 · EPA return-to-compliance field December 31, 2024
6 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 406915 January 15, 2025 Resolving State Compliance achieved 406916 January 17, 2025 Informal State Public Notification requested 406917 January 17, 2025 Informal State Formal Notice of Violation issued 406919 January 17, 2025 Informal State Public Notification requested 406920 January 17, 2025 Informal State Formal Notice of Violation issued 406918 February 24, 2025 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring, Routine (RTCR)Violation 99925 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start October 1, 2024 · period end October 31, 2024 · first reported March 26, 2025 · EPA return-to-compliance field October 31, 2024
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 406913 November 12, 2024 Resolving State Compliance achieved 406911 November 26, 2024 Informal State Public Notification requested 406912 November 26, 2024 Informal State Formal Notice of Violation issued 406914 February 24, 2025 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring, Routine (RTCR)Violation 77024 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start December 1, 2023 · period end December 31, 2023 · first reported March 12, 2024 · EPA return-to-compliance field December 31, 2023
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 406907 January 3, 2024 Resolving State Compliance achieved 406909 January 17, 2024 Informal State Public Notification requested 406910 January 17, 2024 Informal State Formal Notice of Violation issued 406908 February 28, 2024 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring, Routine (RTCR)Violation 189522 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start July 1, 2022 · period end July 31, 2022 · first reported December 7, 2022 · EPA return-to-compliance field July 31, 2022
6 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 406902 August 1, 2022 Resolving State Compliance achieved 406901 August 16, 2022 Informal State Public Notification requested 406905 August 16, 2022 Informal State Formal Notice of Violation issued 406903 August 17, 2022 Informal State Formal Notice of Violation issued 406904 August 17, 2022 Informal State Public Notification requested 406906 September 1, 2022 Informal State Public Notification received
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