AZ0413041 · Arizona

OAK CREEK WATER DISTRICT

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

Violation records shown: 23
EPA health-based flag: 17
Health-based records unresolved in this snapshot: 0
Monitoring and reporting records: 5

Counties listed by EPA · Yavapai County, Arizona

Find the utility’s annual water quality report. For current advisories, check the utility or local drinking-water authority.

Violations and what followed

Among 22 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 90.5 days. The interval uses the reporting periods and dates on file.

Other or unclassified · Resolved
Public Notification Violation for NPDWR ViolationViolation 16871 · Public Notice · Public Notice Rule and Revised PN Rule
Noncompliance period start June 28, 2024 · period end July 8, 2024 · first reported August 14, 2024 · EPA return-to-compliance field July 8, 2024

2 linked actions

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
4552 July 8, 2024 Informal State Violation/Reminder Notice
4554 July 8, 2024 Resolving State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4552	July 8, 2024	Informal	State Violation/Reminder Notice
4554	July 8, 2024	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Treatment Technique, Level 2 Assessment (RTCR)Violation 16870 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start March 6, 2024 · period end July 2, 2024 · first reported June 28, 2024 · EPA return-to-compliance field July 2, 2024

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4547	May 28, 2024	Informal	State Violation/Reminder Notice
4548	May 28, 2024	Informal	State Public Notification requested
4550	July 2, 2024	Resolving	State Compliance achieved
4551	July 2, 2024	Informal	State Public Notification received

Monitoring or reporting · Resolved
Reporting, Assessment Forms (RTCR)Violation 16869 · Revised Total Coliform Rule · Revised Total Coliform Rule
Noncompliance period start December 5, 2023 · period end February 27, 2024 · first reported March 29, 2024 · EPA return-to-compliance field February 27, 2024

2 linked actions

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
4544 February 27, 2024 Informal State Violation/Reminder Notice
4546 February 27, 2024 Resolving State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4544	February 27, 2024	Informal	State Violation/Reminder Notice
4546	February 27, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, Source Water (GWR)Violation 16864 · E. COLI · Ground Water Rule

Noncompliance period start June 17, 2023 · period end January 19, 2024 · first reported August 14, 2023 · EPA return-to-compliance field January 19, 2024

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4526	July 28, 2023	Informal	State Violation/Reminder Notice
4527	July 28, 2023	Informal	State Public Notification requested
4543	January 19, 2024	Resolving	State Compliance achieved
4555	June 20, 2024	Informal	State Public Notification received

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 16863 · Arsenic · Arsenic Rule

Noncompliance period start April 1, 2023 · period end June 30, 2023 · first reported August 14, 2023 · EPA return-to-compliance field June 30, 2023

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4419	February 24, 2020	Formal	State Administrative/Compliance Order without penalty issued
4525	June 21, 2023	Informal	State Public Notification received
4522	June 27, 2023	Informal	State Violation/Reminder Notice
4523	June 27, 2023	Informal	State Public Notification requested
4542	January 18, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved
Lead Consumer NoticeViolation 16865 · Lead and Copper Rule · Lead and Copper Rule
Noncompliance period start January 1, 2023 · period end August 30, 2022 · first reported September 26, 2023 · EPA return-to-compliance field August 30, 2022

2 linked actions

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
4532 August 30, 2022 Resolving State Compliance achieved
4529 August 18, 2023 Informal State Violation/Reminder Notice

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4532	August 30, 2022	Resolving	State Compliance achieved
4529	August 18, 2023	Informal	State Violation/Reminder Notice

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 16862 · Arsenic · Arsenic Rule

Noncompliance period start January 1, 2023 · period end March 31, 2023 · first reported May 15, 2023 · EPA return-to-compliance field March 31, 2023

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4419	February 24, 2020	Formal	State Administrative/Compliance Order without penalty issued
4521	April 12, 2023	Informal	State Public Notification received
4518	April 18, 2023	Informal	State Violation/Reminder Notice
4519	April 18, 2023	Informal	State Public Notification requested
4542	January 18, 2024	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 16861 · Arsenic · Arsenic Rule

Noncompliance period start October 1, 2022 · period end December 31, 2022 · first reported February 15, 2023 · EPA return-to-compliance field December 31, 2022

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4419	February 24, 2020	Formal	State Administrative/Compliance Order without penalty issued
4505	December 2, 2022	Informal	State Violation/Reminder Notice
4506	December 2, 2022	Informal	State Public Notification requested
4510	December 12, 2022	Informal	State Public Notification received
4542	January 18, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved
Report Sample Result/Fail Monitor (RTCR)Violation 16859 · Revised Total Coliform Rule · Revised Total Coliform Rule
Noncompliance period start September 1, 2022 · period end October 7, 2022 · first reported November 16, 2022 · EPA return-to-compliance field October 7, 2022

2 linked actions

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
4508 October 7, 2022 Resolving State Compliance achieved
4499 October 27, 2022 Informal State Violation/Reminder Notice

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4508	October 7, 2022	Resolving	State Compliance achieved
4499	October 27, 2022	Informal	State Violation/Reminder Notice

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 16860 · Arsenic · Arsenic Rule

Noncompliance period start July 1, 2022 · period end September 30, 2022 · first reported November 16, 2022 · EPA return-to-compliance field September 30, 2022

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4419	February 24, 2020	Formal	State Administrative/Compliance Order without penalty issued
4502	November 2, 2022	Informal	State Violation/Reminder Notice
4503	November 2, 2022	Informal	State Public Notification requested
4509	December 12, 2022	Informal	State Public Notification received
4542	January 18, 2024	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 16857 · Arsenic · Arsenic Rule

Noncompliance period start April 1, 2022 · period end June 30, 2022 · first reported August 15, 2022 · EPA return-to-compliance field June 30, 2022

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4419	February 24, 2020	Formal	State Administrative/Compliance Order without penalty issued
4493	June 1, 2022	Informal	State Violation/Reminder Notice
4494	June 1, 2022	Informal	State Public Notification requested
4496	June 6, 2022	Informal	State Public Notification received
4542	January 18, 2024	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 16856 · Arsenic · Arsenic Rule

Noncompliance period start October 1, 2021 · period end December 31, 2021 · first reported May 16, 2022 · EPA return-to-compliance field December 31, 2021

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4419	February 24, 2020	Formal	State Administrative/Compliance Order without penalty issued
4488	January 12, 2022	Informal	State Public Notification received
4484	February 17, 2022	Informal	State Violation/Reminder Notice
4485	February 17, 2022	Informal	State Public Notification requested
4542	January 18, 2024	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 16855 · Arsenic · Arsenic Rule

Noncompliance period start October 1, 2021 · period end December 31, 2021 · first reported May 16, 2022 · EPA return-to-compliance field December 31, 2021

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4419	February 24, 2020	Formal	State Administrative/Compliance Order without penalty issued
4487	January 12, 2022	Informal	State Public Notification received
4481	February 17, 2022	Informal	State Violation/Reminder Notice
4482	February 17, 2022	Informal	State Public Notification requested
4512	March 29, 2023	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 16854 · Arsenic · Arsenic Rule

Noncompliance period start July 1, 2021 · period end September 30, 2021 · first reported February 16, 2022 · EPA return-to-compliance field September 30, 2021

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4419	February 24, 2020	Formal	State Administrative/Compliance Order without penalty issued
4492	November 11, 2021	Informal	State Public Notification received
4489	November 24, 2021	Informal	State Violation/Reminder Notice
4490	November 24, 2021	Informal	State Public Notification requested
4542	January 18, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved
Monitoring, RegularViolation 16853 · Arsenic · Arsenic Rule
Noncompliance period start July 1, 2021 · period end September 30, 2021 · first reported February 16, 2022 · EPA return-to-compliance field September 30, 2021

2 linked actions

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
4477 November 24, 2021 Informal State Violation/Reminder Notice
4479 November 24, 2021 Resolving State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4477	November 24, 2021	Informal	State Violation/Reminder Notice
4479	November 24, 2021	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 16852 · Arsenic · Arsenic Rule

Noncompliance period start July 1, 2021 · period end September 30, 2021 · first reported November 10, 2021 · EPA return-to-compliance field September 30, 2021

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4419	February 24, 2020	Formal	State Administrative/Compliance Order without penalty issued
4474	October 21, 2021	Informal	State Violation/Reminder Notice
4475	October 21, 2021	Informal	State Public Notification requested
4480	November 11, 2021	Informal	State Public Notification received
4512	March 29, 2023	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 16851 · Arsenic · Arsenic Rule

Noncompliance period start April 1, 2021 · period end June 30, 2021 · first reported August 12, 2021 · EPA return-to-compliance field June 30, 2021

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4419	February 24, 2020	Formal	State Administrative/Compliance Order without penalty issued
4465	July 13, 2021	Informal	State Violation/Reminder Notice
4466	July 13, 2021	Informal	State Public Notification requested
4512	March 29, 2023	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 16850 · Arsenic · Arsenic Rule

Noncompliance period start April 1, 2021 · period end June 30, 2021 · first reported August 12, 2021 · EPA return-to-compliance field June 30, 2021

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4419	February 24, 2020	Formal	State Administrative/Compliance Order without penalty issued
4469	July 13, 2021	Informal	State Violation/Reminder Notice
4470	July 13, 2021	Informal	State Public Notification requested
4542	January 18, 2024	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 16849 · Arsenic · Arsenic Rule

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

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4419	February 24, 2020	Formal	State Administrative/Compliance Order without penalty issued
4461	March 31, 2021	Informal	State Violation/Reminder Notice
4462	March 31, 2021	Informal	State Public Notification requested
4512	March 29, 2023	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 16848 · Arsenic · Arsenic Rule

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

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4419	February 24, 2020	Formal	State Administrative/Compliance Order without penalty issued
4457	March 31, 2021	Informal	State Violation/Reminder Notice
4458	March 31, 2021	Informal	State Public Notification requested
4473	July 13, 2021	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 16847 · Arsenic · Arsenic Rule

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

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4419	February 24, 2020	Formal	State Administrative/Compliance Order without penalty issued
4453	March 31, 2021	Informal	State Violation/Reminder Notice
4454	March 31, 2021	Informal	State Public Notification requested
4542	January 18, 2024	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 16846 · Arsenic · Arsenic Rule

Noncompliance period start October 1, 2020 · period end December 31, 2020 · first reported February 12, 2021 · EPA return-to-compliance field December 31, 2020

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4419	February 24, 2020	Formal	State Administrative/Compliance Order without penalty issued
4449	November 25, 2020	Informal	State Violation/Reminder Notice
4450	November 25, 2020	Informal	State Public Notification requested
4473	July 13, 2021	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 16844 · Arsenic · Arsenic Rule

Noncompliance period start October 1, 2020 · period end December 31, 2020 · first reported February 12, 2021 · EPA return-to-compliance field December 31, 2020

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4419	February 24, 2020	Formal	State Administrative/Compliance Order without penalty issued
4444	November 17, 2020	Informal	State Violation/Reminder Notice
4445	November 17, 2020	Informal	State Public Notification requested
4542	January 18, 2024	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