IA8609019 · Iowa

CHELSEA WATER SUPPLY

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

Violation records shown: 7
EPA health-based flag: 0
Health-based records unresolved in this snapshot: 0
Monitoring and reporting records: 5

Counties listed by EPA · Tama 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 5 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 · Unaddressed by formal action

Follow-up Or Routine LCR Tap M/RViolation 55026 · Lead and Copper Rule · Lead and Copper Rule

Noncompliance period start June 1, 2025 · first reported December 19, 2025

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
488939	December 2, 2025	Informal	State Public Notification requested
488940	December 2, 2025	Informal	State Formal Notice of Violation issued

Other or unclassified · Resolved

Public Notification Violation for NPDWR ViolationViolation 52925 · Public Notice · Public Notice Rule and Revised PN Rule

Noncompliance period start September 14, 2024 · period end July 10, 2025 · first reported September 19, 2025 · EPA return-to-compliance field July 10, 2025

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
488937	June 25, 2025	Informal	State Violation/Reminder Notice
488938	June 25, 2025	Informal	State Formal Notice of Violation issued
488936	July 10, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 207524 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start May 1, 2024 · period end May 31, 2024 · first reported September 25, 2024 · EPA return-to-compliance field May 31, 2024

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
488928	July 22, 2024	Informal	State Formal Notice of Violation issued
488929	July 22, 2024	Informal	State Public Notification requested
488933	August 14, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 207424 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start May 1, 2024 · period end May 31, 2024 · first reported September 25, 2024 · EPA return-to-compliance field May 31, 2024

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
488930	July 22, 2024	Informal	State Public Notification requested
488931	July 22, 2024	Informal	State Formal Notice of Violation issued
488934	August 14, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 155724 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start April 1, 2024 · period end April 30, 2024 · first reported September 25, 2024 · EPA return-to-compliance field April 30, 2024

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
488932	May 31, 2024	Resolving	State Compliance achieved
488926	June 10, 2024	Informal	State Public Notification requested
488927	June 10, 2024	Informal	State Formal Notice of Violation issued
488935	July 10, 2025	Informal	State Public Notification received

Other or unclassified · Unaddressed by formal action

Public Notification Violation for NPDWR ViolationViolation 123922 · Public Notice · Public Notice Rule and Revised PN Rule

Noncompliance period start April 24, 2022 · first reported September 8, 2022

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
488923	July 14, 2022	Informal	State Violation/Reminder Notice
488924	July 14, 2022	Informal	State Formal Notice of Violation issued
488925	July 14, 2022	Informal	State Intentional no-action

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 62722 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start December 1, 2021 · period end December 31, 2021 · first reported March 3, 2022 · EPA return-to-compliance field December 31, 2021

10 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
488916	January 17, 2022	Informal	State Formal Notice of Violation issued
488920	January 17, 2022	Informal	State Formal Notice of Violation issued
488913	January 19, 2022	Informal	State Public Notification requested
488914	January 19, 2022	Informal	State Formal Notice of Violation issued
488915	March 29, 2022	Resolving	State Compliance achieved
488919	March 29, 2022	Resolving	State Compliance achieved
488918	April 22, 2022	Informal	State Public Notification received
488922	April 22, 2022	Informal	State Public Notification received
488917	April 25, 2022	Informal	State Public Notification received
488921	April 25, 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