ID5160031 · Idaho

OAKLEY VALLEY WATER CORPORATION

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

Violation records shown: 39
EPA health-based flag: 15
Health-based records unresolved in this snapshot: 1
Monitoring and reporting records: 18

Counties listed by EPA · Cassia 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 33 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 262 days. The interval uses the reporting periods and dates on file.

EPA health-based flag · Unaddressed by formal action
Failure To Address DeficiencyViolation 11567 · Groundwater Rule · Ground Water Rule
Noncompliance period start October 19, 2013 · first reported November 25, 2019
No linked action row appears in the records shown.

Monitoring or reporting · Archived

Monitoring of Treatment (SWTR-Unfilt/GWR)Violation 11672 · Groundwater Rule · Ground Water Rule

Noncompliance period start January 1, 2026 · period end January 31, 2026 · first reported June 26, 2026 · EPA return-to-compliance field January 31, 2026

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
143201	March 31, 2026	Informal	State Violation/Reminder Notice
143202	April 3, 2026	Informal	State Public Notification requested

Monitoring or reporting · Archived

Monitoring and Reporting (DBP)Violation 11657 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start June 1, 2025 · period end June 30, 2025 · first reported September 12, 2025 · EPA return-to-compliance field June 30, 2025

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
143194	August 13, 2025	Informal	State Violation/Reminder Notice
143195	August 16, 2025	Informal	State Public Notification requested

Monitoring or reporting · Unaddressed by formal action

Lead Consumer NoticeViolation 11631 · Lead and Copper Rule · Lead and Copper Rule

Noncompliance period start December 30, 2024 · first reported March 21, 2025

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
143154	January 16, 2025	Informal	State Violation/Reminder Notice
143155	January 19, 2025	Informal	State Public Notification requested

Other or unclassified · Resolved

Public Notification Violation for NPDWR ViolationViolation 11640 · Public Notice · Public Notice Rule and Revised PN Rule

Noncompliance period start December 29, 2024 · period end September 17, 2025 · first reported March 21, 2025 · EPA return-to-compliance field September 17, 2025

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
143180	February 19, 2025	Informal	State Violation/Reminder Notice
143181	February 22, 2025	Informal	State Public Notification requested
143196	September 17, 2025	Resolving	State Compliance achieved

Other or unclassified · Resolved

Public Notification Violation for NPDWR ViolationViolation 11638 · Public Notice · Public Notice Rule and Revised PN Rule

Noncompliance period start December 29, 2024 · period end September 17, 2025 · first reported March 21, 2025 · EPA return-to-compliance field September 17, 2025

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
143176	February 19, 2025	Informal	State Violation/Reminder Notice
143177	February 22, 2025	Informal	State Public Notification requested
143196	September 17, 2025	Resolving	State Compliance achieved

Other or unclassified · Resolved

Public Notification Violation for NPDWR ViolationViolation 11636 · Public Notice · Public Notice Rule and Revised PN Rule

Noncompliance period start December 29, 2024 · period end September 17, 2025 · first reported March 21, 2025 · EPA return-to-compliance field September 17, 2025

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
143172	February 19, 2025	Informal	State Violation/Reminder Notice
143173	February 22, 2025	Informal	State Public Notification requested
143196	September 17, 2025	Resolving	State Compliance achieved

Other or unclassified · Resolved

Public Notification Violation for NPDWR ViolationViolation 11635 · Public Notice · Public Notice Rule and Revised PN Rule

Noncompliance period start December 29, 2024 · period end September 17, 2025 · first reported March 21, 2025 · EPA return-to-compliance field September 17, 2025

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
143170	February 19, 2025	Informal	State Violation/Reminder Notice
143171	February 22, 2025	Informal	State Public Notification requested
143196	September 17, 2025	Resolving	State Compliance achieved

Other or unclassified · Resolved

Public Notification Violation for NPDWR ViolationViolation 11632 · Public Notice · Public Notice Rule and Revised PN Rule

Noncompliance period start December 29, 2024 · period end September 17, 2025 · first reported March 21, 2025 · EPA return-to-compliance field September 17, 2025

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
143182	February 19, 2025	Informal	State Violation/Reminder Notice
143183	February 22, 2025	Informal	State Public Notification requested
143196	September 17, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 11642 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start December 1, 2024 · period end December 31, 2024 · first reported March 21, 2025 · EPA return-to-compliance field December 31, 2024

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
143187	January 8, 2025	Resolving	State Compliance achieved
143160	February 20, 2025	Informal	State Violation/Reminder Notice
143161	February 23, 2025	Informal	State Public Notification requested

Monitoring or reporting · Archived

Monitoring of Treatment (SWTR-Unfilt/GWR)Violation 11641 · Groundwater Rule · Ground Water Rule

Noncompliance period start December 1, 2024 · period end December 31, 2024 · first reported March 21, 2025 · EPA return-to-compliance field December 31, 2024

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
143185	February 19, 2025	Informal	State Violation/Reminder Notice
143186	February 22, 2025	Informal	State Public Notification requested

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 11643 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start November 1, 2024 · period end November 30, 2024 · first reported March 21, 2025 · EPA return-to-compliance field November 30, 2024

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
143188	January 8, 2025	Resolving	State Compliance achieved
143158	February 20, 2025	Informal	State Violation/Reminder Notice
143159	February 23, 2025	Informal	State Public Notification requested

EPA health-based flag · Resolved

Failure To Address DeficiencyViolation 11626 · Groundwater Rule · Ground Water Rule

Noncompliance period start October 31, 2024 · period end July 31, 2025 · first reported March 21, 2025 · EPA return-to-compliance field July 31, 2025

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
143143	November 13, 2024	Informal	State Violation/Reminder Notice
143144	November 16, 2024	Informal	State Public Notification requested
143189	July 31, 2025	Resolving	State Compliance achieved
143190	July 31, 2025	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Failure To Address DeficiencyViolation 11625 · Groundwater Rule · Ground Water Rule

Noncompliance period start October 31, 2024 · period end July 31, 2025 · first reported March 21, 2025 · EPA return-to-compliance field July 31, 2025

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
143141	November 13, 2024	Informal	State Violation/Reminder Notice
143142	November 16, 2024	Informal	State Public Notification requested
143191	July 31, 2025	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Failure To Address DeficiencyViolation 11623 · Groundwater Rule · Ground Water Rule

Noncompliance period start October 31, 2024 · period end July 31, 2025 · first reported March 21, 2025 · EPA return-to-compliance field July 31, 2025

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
143137	November 13, 2024	Informal	State Violation/Reminder Notice
143138	November 16, 2024	Informal	State Public Notification requested
143191	July 31, 2025	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Failure To Address DeficiencyViolation 11621 · Groundwater Rule · Ground Water Rule

Noncompliance period start October 31, 2024 · period end February 13, 2025 · first reported March 21, 2025 · EPA return-to-compliance field February 13, 2025

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
143133	November 13, 2024	Informal	State Violation/Reminder Notice
143134	November 16, 2024	Informal	State Public Notification requested
143184	February 13, 2025	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Failure To Address DeficiencyViolation 11628 · Groundwater Rule · Ground Water Rule

Noncompliance period start October 1, 2024 · period end January 9, 2025 · first reported March 21, 2025 · EPA return-to-compliance field January 9, 2025

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
143149	November 13, 2024	Informal	State Violation/Reminder Notice
143150	November 16, 2024	Informal	State Public Notification requested
143153	January 9, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 11630 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start September 1, 2024 · period end September 30, 2024 · first reported December 4, 2024 · EPA return-to-compliance field September 30, 2024

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
143163	October 17, 2024	Resolving	State Compliance achieved
143131	November 14, 2024	Informal	State Violation/Reminder Notice
143132	November 17, 2024	Informal	State Public Notification requested

Other or unclassified · Resolved

Failure to Consult with StateViolation 11599 · Groundwater Rule · Ground Water Rule

Noncompliance period start March 7, 2024 · period end June 4, 2024 · first reported August 29, 2024 · EPA return-to-compliance field June 4, 2024

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
143129	June 3, 2024	Informal	State Violation/Reminder Notice
143162	June 4, 2024	Resolving	State Compliance achieved
143130	June 6, 2024	Informal	State Public Notification requested

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 11598 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts Rule

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

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
143123	May 9, 2024	Informal	State Violation/Reminder Notice
143124	May 12, 2024	Informal	State Public Notification requested
143197	September 17, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 11597 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start January 1, 2024 · period end January 31, 2024 · first reported May 30, 2024 · EPA return-to-compliance field January 31, 2024

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
143151	March 8, 2024	Informal	State Violation/Reminder Notice
143152	March 11, 2024	Informal	State Public Notification requested
143127	June 12, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, Source Water (GWR)Violation 11592 · E. COLI · Ground Water Rule

Noncompliance period start September 19, 2023 · period end April 24, 2024 · first reported November 29, 2023 · EPA return-to-compliance field April 24, 2024

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
143115	November 9, 2023	Informal	State Violation/Reminder Notice
143116	November 12, 2023	Informal	State Public Notification requested
143164	January 26, 2024	Resolving	State Compliance achieved
143165	April 24, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 11591 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start August 1, 2023 · period end August 31, 2023 · first reported November 29, 2023 · EPA return-to-compliance field August 31, 2023

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
143113	October 12, 2023	Informal	State Violation/Reminder Notice
143114	October 15, 2023	Informal	State Public Notification requested
143127	June 12, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 11593 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start July 1, 2023 · period end September 30, 2023 · first reported November 29, 2023 · EPA return-to-compliance field September 30, 2023

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
143117	November 9, 2023	Informal	State Violation/Reminder Notice
143118	November 12, 2023	Informal	State Public Notification requested
143128	June 12, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 11589 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start January 1, 2023 · period end March 31, 2023 · first reported June 6, 2023 · EPA return-to-compliance field March 31, 2023

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
143111	May 10, 2023	Informal	State Violation/Reminder Notice
143112	May 13, 2023	Informal	State Public Notification requested
143128	June 12, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 11587 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start January 1, 2023 · period end January 31, 2023 · first reported June 6, 2023 · EPA return-to-compliance field January 31, 2023

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
143109	March 15, 2023	Informal	State Violation/Reminder Notice
143110	March 18, 2023	Informal	State Public Notification requested
143126	June 12, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Unaddressed by formal action
Lead Consumer NoticeViolation 11585 · Lead and Copper Rule · Lead and Copper Rule
Noncompliance period start December 30, 2022 · first reported March 17, 2023
No linked action row appears in the records shown.

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 11586 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start October 1, 2022 · period end December 31, 2022 · first reported March 17, 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
143107	February 21, 2023	Informal	State Violation/Reminder Notice
143108	February 24, 2023	Informal	State Public Notification requested
143128	June 12, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 11582 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start October 1, 2022 · period end October 31, 2022 · first reported March 17, 2023 · EPA return-to-compliance field October 31, 2022

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
143105	December 7, 2022	Informal	State Violation/Reminder Notice
143106	December 10, 2022	Informal	State Public Notification requested
143125	June 12, 2024	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Failure To Address DeficiencyViolation 11575 · Groundwater Rule · Ground Water Rule

Noncompliance period start April 1, 2020 · period end July 13, 2021 · first reported September 10, 2020 · EPA return-to-compliance field July 13, 2021

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
143086	February 28, 2020	Informal	State Public Notification received
143082	May 7, 2020	Informal	State Violation/Reminder Notice
143083	May 10, 2020	Informal	State Public Notification requested
143089	December 18, 2020	Resolving	State Compliance achieved
143100	July 13, 2021	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Failure To Address DeficiencyViolation 11580 · Groundwater Rule · Ground Water Rule

Noncompliance period start November 1, 2018 · period end July 13, 2021 · first reported August 24, 2021 · EPA return-to-compliance field July 13, 2021

6 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
143103	July 2, 2021	Informal	State Public Notification received
143098	July 9, 2021	Informal	State Violation/Reminder Notice
143101	July 9, 2021	Informal	State Violation/Reminder Notice
143099	July 12, 2021	Informal	State Public Notification requested
143102	July 12, 2021	Informal	State Public Notification requested
143100	July 13, 2021	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Failure To Address DeficiencyViolation 11565 · Groundwater Rule · Ground Water Rule

Noncompliance period start November 1, 2018 · period end June 16, 2021 · first reported March 1, 2019 · EPA return-to-compliance field June 16, 2021

7 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
143066	November 9, 2018	Informal	State Violation/Reminder Notice
143094	November 9, 2018	Informal	State Violation/Reminder Notice
143067	November 12, 2018	Informal	State Public Notification requested
143095	November 12, 2018	Informal	State Public Notification requested
143073	December 6, 2018	Informal	State Public Notification received
143097	March 5, 2021	Resolving	State Compliance achieved
143096	June 16, 2021	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Failure To Address DeficiencyViolation 11564 · Groundwater Rule · Ground Water Rule

Noncompliance period start November 1, 2018 · period end July 13, 2021 · first reported March 1, 2019 · EPA return-to-compliance field July 13, 2021

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
143064	November 9, 2018	Informal	State Violation/Reminder Notice
143065	November 12, 2018	Informal	State Public Notification requested
143072	December 6, 2018	Informal	State Public Notification received
143087	September 25, 2020	Resolving	State Compliance achieved
143100	July 13, 2021	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Failure To Address DeficiencyViolation 11563 · Groundwater Rule · Ground Water Rule

Noncompliance period start November 1, 2018 · period end July 13, 2021 · first reported March 1, 2019 · EPA return-to-compliance field July 13, 2021

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
143062	November 9, 2018	Informal	State Violation/Reminder Notice
143063	November 12, 2018	Informal	State Public Notification requested
143071	December 6, 2018	Informal	State Public Notification received
143080	March 2, 2020	Resolving	State Compliance achieved
143100	July 13, 2021	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Failure To Address DeficiencyViolation 11562 · Groundwater Rule · Ground Water Rule

Noncompliance period start November 1, 2018 · period end July 13, 2021 · first reported March 1, 2019 · EPA return-to-compliance field July 13, 2021

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
143060	November 9, 2018	Informal	State Violation/Reminder Notice
143061	November 12, 2018	Informal	State Public Notification requested
143070	December 6, 2018	Informal	State Public Notification received
143085	June 10, 2020	Resolving	State Compliance achieved
143100	July 13, 2021	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Failure To Address DeficiencyViolation 11561 · Groundwater Rule · Ground Water Rule

Noncompliance period start November 1, 2018 · period end July 13, 2021 · first reported March 1, 2019 · EPA return-to-compliance field July 13, 2021

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
143058	November 9, 2018	Informal	State Violation/Reminder Notice
143059	November 12, 2018	Informal	State Public Notification requested
143069	December 6, 2018	Informal	State Public Notification received
143085	June 10, 2020	Resolving	State Compliance achieved
143100	July 13, 2021	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Failure To Address DeficiencyViolation 11560 · Groundwater Rule · Ground Water Rule

Noncompliance period start November 1, 2018 · period end July 13, 2021 · first reported March 1, 2019 · EPA return-to-compliance field July 13, 2021

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
143056	November 9, 2018	Informal	State Violation/Reminder Notice
143057	November 12, 2018	Informal	State Public Notification requested
143068	December 6, 2018	Informal	State Public Notification received
143081	March 2, 2020	Resolving	State Compliance achieved
143100	July 13, 2021	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 11579 · Nitrite · Nitrate Rule

Noncompliance period start January 1, 2018 · period end December 31, 2020 · first reported March 2, 2021 · EPA return-to-compliance field December 31, 2020

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
143092	February 10, 2021	Informal	State Violation/Reminder Notice
143093	February 13, 2021	Informal	State Public Notification requested
143104	December 7, 2021	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Failure To Address DeficiencyViolation 11573 · Groundwater Rule · Ground Water Rule

Noncompliance period start October 19, 2013 · period end July 13, 2021 · first reported March 23, 2020 · EPA return-to-compliance field July 13, 2021

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
143078	January 16, 2020	Informal	State Violation/Reminder Notice
143079	January 19, 2020	Informal	State Public Notification requested
143084	February 28, 2020	Informal	State Public Notification received
143090	December 18, 2020	Resolving	State Compliance achieved
143100	July 13, 2021	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