IA5784311 · Iowa

OAK VALLEY

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

Violation records shown: 14
EPA health-based flag: 0
Health-based records unresolved in this snapshot: 0
Monitoring and reporting records: 7

Counties listed by EPA · Linn 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 10 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 121 days. The interval uses the reporting periods and dates on file.

Monitoring or reporting · Resolved

Lead Consumer NoticeViolation 111526 · Lead and Copper Rule · Lead and Copper Rule

Noncompliance period start December 1, 2025 · period end February 2, 2026 · first reported June 17, 2026 · EPA return-to-compliance field February 2, 2026

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
844517	January 23, 2026	Informal	State Formal Notice of Violation issued
844516	February 2, 2026	Resolving	State Compliance achieved

Other or unclassified · Resolved

Public Notification Violation for NPDWR ViolationViolation 221025 · Public Notice · Public Notice Rule and Revised PN Rule

Noncompliance period start March 6, 2025 · period end August 4, 2025 · first reported June 26, 2025 · EPA return-to-compliance field August 4, 2025

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
844507	April 17, 2025	Informal	State Intentional no-action
844508	April 17, 2025	Informal	State Violation/Reminder Notice
844509	April 17, 2025	Informal	State Formal Notice of Violation issued
844511	August 4, 2025	Resolving	State Compliance achieved

Other or unclassified · Resolved

Public Notification Violation for NPDWR ViolationViolation 108625 · Public Notice · Public Notice Rule and Revised PN Rule

Noncompliance period start October 22, 2024 · period end August 4, 2025 · first reported March 26, 2025 · EPA return-to-compliance field August 4, 2025

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
844499	December 5, 2024	Informal	State Intentional no-action
844500	December 5, 2024	Informal	State Formal Notice of Violation issued
844501	December 5, 2024	Informal	State Violation/Reminder Notice
844510	August 4, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 43125 · Nitrate · Nitrate Rule

Noncompliance period start July 1, 2024 · period end September 30, 2024 · first reported December 19, 2024 · EPA return-to-compliance field September 30, 2024

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
844502	December 2, 2024	Informal	State Public Notification requested
844503	December 2, 2024	Informal	State Formal Notice of Violation issued
844506	December 23, 2024	Resolving	State Compliance achieved
844512	August 4, 2025	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, Source Water (GWR)Violation 211924 · E. COLI · Ground Water Rule

Noncompliance period start June 16, 2024 · period end June 27, 2024 · first reported September 25, 2024 · EPA return-to-compliance field June 27, 2024

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
844505	June 27, 2024	Resolving	State Compliance achieved
844435	July 18, 2024	Informal	State Public Notification requested
844436	July 18, 2024	Informal	State Formal Notice of Violation issued
844514	August 4, 2025	Informal	State Public Notification received

Monitoring or reporting · Resolved

Lead Consumer NoticeViolation 78923 · Lead and Copper Rule · Lead and Copper Rule

Noncompliance period start December 1, 2022 · period end November 9, 2023 · first reported March 17, 2023 · EPA return-to-compliance field November 9, 2023

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
844426	February 3, 2023	Informal	State Formal Notice of Violation issued
844432	November 9, 2023	Resolving	State Compliance achieved

Other or unclassified · Resolved

Public Notification Violation for NPDWR ViolationViolation 44123 · Public Notice · Public Notice Rule and Revised PN Rule

Noncompliance period start October 12, 2022 · period end June 30, 2023 · first reported March 17, 2023 · EPA return-to-compliance field June 30, 2023

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
844419	November 17, 2022	Informal	State Intentional no-action
844420	November 17, 2022	Informal	State Formal Notice of Violation issued
844421	November 17, 2022	Informal	State Violation/Reminder Notice
844504	June 30, 2023	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 11423 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start August 1, 2022 · period end August 31, 2022 · first reported December 7, 2022 · EPA return-to-compliance field August 31, 2022

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
844422	October 19, 2022	Informal	State Public Notification requested
844423	October 19, 2022	Informal	State Formal Notice of Violation issued
844428	July 3, 2023	Informal	State Public Notification received
844430	August 31, 2023	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 11323 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start August 1, 2022 · period end August 31, 2022 · first reported December 7, 2022 · EPA return-to-compliance field August 31, 2022

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
844424	October 19, 2022	Informal	State Public Notification requested
844425	October 19, 2022	Informal	State Formal Notice of Violation issued
844429	July 3, 2023	Informal	State Public Notification received
844431	August 31, 2023	Resolving	State Compliance achieved

Other or unclassified · Unaddressed by formal action

Public Notification Violation for NPDWR ViolationViolation 195322 · Public Notice · Public Notice Rule and Revised PN Rule

Noncompliance period start July 13, 2022 · first reported December 7, 2022

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
844416	August 17, 2022	Informal	State Intentional no-action
844417	August 17, 2022	Informal	State Formal Notice of Violation issued
844418	August 17, 2022	Informal	State Violation/Reminder Notice

Other or unclassified · Resolved

Consumer Confidence Report Complete Failure to ReportViolation 201122 · Consumer Confidence Rule · Consumer Confidence Rule

Noncompliance period start July 1, 2022 · period end July 3, 2023 · first reported December 7, 2022 · EPA return-to-compliance field July 3, 2023

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
844415	August 18, 2022	Informal	State Formal Notice of Violation issued
844427	July 3, 2023	Resolving	State Compliance achieved

Monitoring or reporting · Unaddressed by formal action
Lead Consumer NoticeViolation 84220 · Lead and Copper Rule · Lead and Copper Rule
Noncompliance period start December 1, 2019 · first reported March 17, 2020

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
844404 January 31, 2020 Informal State Formal Notice of Violation issued

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
844404	January 31, 2020	Informal	State Formal Notice of Violation issued

Other or unclassified · Unaddressed by formal action

Public Notification Violation for NPDWR ViolationViolation 199413 · Public Notice · Public Notice Rule and Revised PN Rule

Noncompliance period start August 1, 2013 · first reported September 26, 2014

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
844355	August 20, 2013	Informal	State Formal Notice of Violation issued
844356	August 20, 2013	Informal	State Intentional no-action
844357	August 20, 2013	Informal	State Violation/Reminder Notice

Other or unclassified · Unaddressed by formal action

Public Notification Violation for NPDWR ViolationViolation 165513 · Public Notice · Public Notice Rule and Revised PN Rule

Noncompliance period start July 1, 2013 · first reported September 26, 2014

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
844352	August 20, 2013	Informal	State Intentional no-action
844353	August 20, 2013	Informal	State Violation/Reminder Notice
844354	August 20, 2013	Informal	State Formal Notice of Violation issued

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