090400051 · Arizona

Colorado River Regional Water System

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

Violation records shown: 40
EPA health-based flag: 14
Health-based records unresolved in this snapshot: 0
Monitoring and reporting records: 23

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

Violations and what followed

Among 36 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.

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 04000513A8000122025 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start December 1, 2025 · period end December 31, 2025 · first reported March 18, 2026 · EPA return-to-compliance field December 31, 2025

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
0400051OX01222612403	January 22, 2026	Resolving	Federal Compliance achieved
0400051IA04012612500	April 1, 2026	Informal	Federal Violation/Reminder Notice

Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 0400051270999102025 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts Rule
Noncompliance period start October 1, 2025 · period end December 31, 2025 · first reported March 18, 2026 · EPA return-to-compliance field December 31, 2025

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
0400051OX01222612403 January 22, 2026 Resolving Federal Compliance achieved

Monitoring or reporting · Resolved

Report Sample Result/Fail Monitor (RTCR)Violation 04000514B800032025 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start March 1, 2025 · period end April 22, 2025 · first reported June 30, 2025 · EPA return-to-compliance field April 22, 2025

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
0400051OX04222512153	April 22, 2025	Resolving	Federal Compliance achieved
0400051IA06112512156	June 11, 2025	Informal	Federal Violation/Reminder Notice
0400051IA06112512165	June 11, 2025	Informal	Federal Violation/Reminder Notice

Monitoring or reporting · Archived
Monitoring, RegularViolation 040005103104012025 · Nitrate · Nitrate Rule
Noncompliance period start January 1, 2025 · period end December 31, 2025 · first reported March 18, 2026 · EPA return-to-compliance field December 31, 2025
No linked action row appears in the records shown.
Monitoring or reporting · Resolved
Lead Consumer NoticeViolation 0400051665000102023 · Lead and Copper Rule · Lead and Copper Rule
Noncompliance period start October 29, 2023 · period end March 19, 2024 · first reported March 28, 2024 · EPA return-to-compliance field March 19, 2024

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
0400051OX03192411688 March 19, 2024 Resolving Federal Compliance achieved
Monitoring or reporting · Archived
Monitoring, RegularViolation 040005103102512023 · Fluoride · Inorganic Chemicals
Noncompliance period start January 1, 2023 · period end December 31, 2025 · first reported March 18, 2026 · EPA return-to-compliance field December 31, 2025
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 040005103100512023 · Arsenic · Arsenic Rule
Noncompliance period start January 1, 2023 · period end December 31, 2025 · first reported March 18, 2026 · EPA return-to-compliance field December 31, 2025
No linked action row appears in the records shown.
Monitoring or reporting · Resolved
Monitoring, Routine (IDSE)Violation 040005130295012021 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts Rule
Noncompliance period start January 1, 2021 · period end December 31, 2021 · first reported June 30, 2023 · EPA return-to-compliance field December 31, 2021

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
0400051OX08282211203 August 28, 2022 Resolving Federal Compliance achieved
Monitoring or reporting · Resolved
Monitoring, Routine (IDSE)Violation 040005130245612021 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts Rule
Noncompliance period start January 1, 2021 · period end December 31, 2021 · first reported June 30, 2023 · EPA return-to-compliance field December 31, 2021

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
0400051OX08282211203 August 28, 2022 Resolving Federal Compliance achieved
Monitoring or reporting · Resolved
Monitoring, RegularViolation 040005103104012021 · Nitrate · Nitrate Rule
Noncompliance period start January 1, 2021 · period end December 31, 2021 · first reported June 30, 2023 · EPA return-to-compliance field December 31, 2021

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
0400051OX12202211434 December 20, 2022 Resolving Federal Compliance achieved
EPA health-based flag · Resolved
Treatment Technique, Level 1 Assessment (RTCR)Violation 04000512A800042020 · Revised Total Coliform Rule · Revised Total Coliform Rule
Noncompliance period start April 1, 2020 · period end June 11, 2020 · first reported June 30, 2023 · EPA return-to-compliance field June 11, 2020

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
0400051OX06112010394 June 11, 2020 Resolving Federal Compliance achieved
Monitoring or reporting · Resolved
Monitoring, RegularViolation 040005103104012017 · Nitrate · Nitrate Rule
Noncompliance period start January 1, 2017 · period end December 31, 2017 · first reported June 30, 2023 · EPA return-to-compliance field December 31, 2017

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
0400051OX03011890875 March 1, 2018 Resolving Federal Compliance achieved
EPA health-based flag · Resolved
Maximum Contaminant Level Violation, E. coli (RTCR)Violation 04000511A800092016 · Revised Total Coliform Rule · Revised Total Coliform Rule
Noncompliance period start September 1, 2016 · period end September 30, 2016 · first reported June 30, 2023 · EPA return-to-compliance field September 30, 2016

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
0400051OX11011686084 November 1, 2016 Resolving Federal Compliance achieved
Monitoring or reporting · Resolved
Monitoring, Routine (RTCR)Violation 04000513A800062016 · Revised Total Coliform Rule · Revised Total Coliform Rule
Noncompliance period start June 1, 2016 · period end June 30, 2016 · first reported June 30, 2023 · EPA return-to-compliance field June 30, 2016

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
0400051OX08011686039 August 1, 2016 Resolving Federal Compliance achieved
Monitoring or reporting · Resolved
Monitoring, RegularViolation 040005103104012016 · Nitrate · Nitrate Rule
Noncompliance period start January 1, 2016 · period end December 31, 2016 · first reported June 30, 2023 · EPA return-to-compliance field December 31, 2016

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
0400051OX03011890874 March 1, 2018 Resolving Federal Compliance achieved
Other or unclassified · Resolved
Public Notification Violation for NPDWR ViolationViolation 0400051757500102015 · Public Notice · Public Notice Rule and Revised PN Rule
Noncompliance period start October 1, 2015 · period end June 27, 2016 · first reported June 30, 2023 · EPA return-to-compliance field June 27, 2016

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
0400051OX06271685337 June 27, 2016 Resolving Federal Compliance achieved
EPA health-based flag · Resolved
Maximum Contaminant Level Violation, Monthly (TCR)Violation 0400051223100102015 · Coliform (TCR) · Total Coliform Rule
Noncompliance period start October 1, 2015 · period end October 31, 2015 · first reported June 30, 2023 · EPA return-to-compliance field October 31, 2015

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
0400051OX02161683010 February 16, 2016 Resolving Federal Compliance achieved
Other or unclassified · Resolved
Public Notification Violation for NPDWR ViolationViolation 040005175750062015 · Public Notice · Public Notice Rule and Revised PN Rule
Noncompliance period start June 1, 2015 · period end June 27, 2016 · first reported June 30, 2023 · EPA return-to-compliance field June 27, 2016

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
0400051OX06271685336 June 27, 2016 Resolving Federal Compliance achieved
EPA health-based flag · Resolved
Maximum Contaminant Level Violation, Monthly (TCR)Violation 040005122310062015 · Coliform (TCR) · Total Coliform Rule
Noncompliance period start June 1, 2015 · period end June 30, 2015 · first reported June 30, 2023 · EPA return-to-compliance field June 30, 2015

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
0400051OX08111581179 August 11, 2015 Resolving Federal Compliance achieved
Other or unclassified · Resolved
Public Notification Violation for NPDWR ViolationViolation 040005175750052015 · Public Notice · Public Notice Rule and Revised PN Rule
Noncompliance period start May 1, 2015 · period end June 27, 2016 · first reported June 30, 2023 · EPA return-to-compliance field June 27, 2016

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
0400051OX06271685335 June 27, 2016 Resolving Federal Compliance achieved
EPA health-based flag · Resolved
Maximum Contaminant Level Violation, Monthly (TCR)Violation 040005122310052015 · Coliform (TCR) · Total Coliform Rule
Noncompliance period start May 1, 2015 · period end May 31, 2015 · first reported June 30, 2023 · EPA return-to-compliance field May 31, 2015

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
0400051OX08111581178 August 11, 2015 Resolving Federal Compliance achieved
Monitoring or reporting · Resolved
Monitoring, Routine Minor (TCR)Violation 040005124310052014 · Coliform (TCR) · Total Coliform Rule
Noncompliance period start May 1, 2014 · period end May 31, 2014 · first reported June 30, 2023 · EPA return-to-compliance field May 31, 2014

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
0400051OX10211476326 October 21, 2014 Resolving Federal Compliance achieved
EPA health-based flag · Resolved
Maximum Contaminant Level Violation, Monthly (TCR)Violation 040005122310052014 · Coliform (TCR) · Total Coliform Rule
Noncompliance period start May 1, 2014 · period end May 31, 2014 · first reported June 30, 2023 · EPA return-to-compliance field May 31, 2014

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
0400051OX10211476325 October 21, 2014 Resolving Federal Compliance achieved
EPA health-based flag · Resolved
Failure To Address DeficiencyViolation 0400051450700320145 · Groundwater Rule · Ground Water Rule
Noncompliance period start March 31, 2014 · period end January 1, 2014 · first reported June 30, 2023 · EPA return-to-compliance field January 1, 2014

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
0400051OX01011484244 January 1, 2014 Resolving Federal Compliance achieved
EPA health-based flag · Resolved
Failure To Address DeficiencyViolation 0400051450700320144 · Groundwater Rule · Ground Water Rule
Noncompliance period start March 31, 2014 · period end October 22, 2014 · first reported June 30, 2023 · EPA return-to-compliance field October 22, 2014

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
0400051OX10221476332 October 22, 2014 Resolving Federal Compliance achieved
EPA health-based flag · Resolved
Failure To Address DeficiencyViolation 0400051450700320143 · Groundwater Rule · Ground Water Rule
Noncompliance period start March 31, 2014 · period end October 22, 2014 · first reported June 30, 2023 · EPA return-to-compliance field October 22, 2014

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
0400051OX10221476331 October 22, 2014 Resolving Federal Compliance achieved
EPA health-based flag · Resolved
Failure To Address DeficiencyViolation 0400051450700320142 · Groundwater Rule · Ground Water Rule
Noncompliance period start March 31, 2014 · period end November 16, 2015 · first reported June 30, 2023 · EPA return-to-compliance field November 16, 2015

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
0400051OX11161582030 November 16, 2015 Resolving Federal Compliance achieved
EPA health-based flag · Resolved
Failure To Address DeficiencyViolation 0400051450700320141 · Groundwater Rule · Ground Water Rule
Noncompliance period start March 31, 2014 · period end November 16, 2015 · first reported June 30, 2023 · EPA return-to-compliance field November 16, 2015

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
0400051OX11161582029 November 16, 2015 Resolving Federal Compliance achieved
EPA health-based flag · Resolved
Failure To Address DeficiencyViolation 0400051450700320140 · Groundwater Rule · Ground Water Rule
Noncompliance period start March 31, 2014 · period end January 26, 2016 · first reported June 30, 2023 · EPA return-to-compliance field January 26, 2016

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
0400051OX01261686127 January 26, 2016 Resolving Federal Compliance achieved
Monitoring or reporting · Resolved
Follow-up Or Routine LCR Tap M/RViolation 040005152500012014 · Lead and Copper Rule · Lead and Copper Rule
Noncompliance period start January 1, 2014 · period end September 26, 2017 · first reported June 30, 2023 · EPA return-to-compliance field September 26, 2017

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
0400051OX09261790129 September 26, 2017 Resolving Federal Compliance achieved
Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 040005127295012012 · TTHM · Stage 1 Disinfectants and Disinfection Byproducts Rule
Noncompliance period start January 1, 2012 · period end March 17, 2012 · first reported June 30, 2023 · EPA return-to-compliance field March 17, 2012

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
0400051OX03171269919 March 17, 2012 Resolving Federal Compliance achieved
Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 040005127245612012 · Total Haloacetic Acids (HAA5) · Stage 1 Disinfectants and Disinfection Byproducts Rule
Noncompliance period start January 1, 2012 · period end March 17, 2012 · first reported June 30, 2023 · EPA return-to-compliance field March 17, 2012

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
0400051OX03171269920 March 17, 2012 Resolving Federal Compliance achieved
Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 040005127295042011 · TTHM · Stage 1 Disinfectants and Disinfection Byproducts Rule
Noncompliance period start April 1, 2011 · period end June 30, 2011 · first reported June 30, 2023 · EPA return-to-compliance field June 30, 2011

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
0400051OX09241165570 September 24, 2011 Resolving Federal Compliance achieved
Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 040005127245642011 · Total Haloacetic Acids (HAA5) · Stage 1 Disinfectants and Disinfection Byproducts Rule
Noncompliance period start April 1, 2011 · period end June 30, 2011 · first reported June 30, 2023 · EPA return-to-compliance field June 30, 2011

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
0400051OX09241165571 September 24, 2011 Resolving Federal Compliance achieved
EPA health-based flag · Resolved
Maximum Contaminant Level Violation, AverageViolation 040005102295042011 · TTHM · Stage 1 Disinfectants and Disinfection Byproducts Rule
Noncompliance period start April 1, 2011 · period end June 30, 2011 · first reported June 30, 2023 · EPA return-to-compliance field June 30, 2011

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
0400051OX09241165573 September 24, 2011 Resolving Federal Compliance achieved
Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 040005127295012011 · TTHM · Stage 1 Disinfectants and Disinfection Byproducts Rule
Noncompliance period start January 1, 2011 · period end March 31, 2011 · first reported June 30, 2023 · EPA return-to-compliance field March 31, 2011

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
0400051OX09241165568 September 24, 2011 Resolving Federal Compliance achieved
Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 040005127245612011 · Total Haloacetic Acids (HAA5) · Stage 1 Disinfectants and Disinfection Byproducts Rule
Noncompliance period start January 1, 2011 · period end March 31, 2011 · first reported June 30, 2023 · EPA return-to-compliance field March 31, 2011

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
0400051OX09241165569 September 24, 2011 Resolving Federal Compliance achieved
EPA health-based flag · Resolved
Maximum Contaminant Level Violation, AverageViolation 040005102295012011 · TTHM · Stage 1 Disinfectants and Disinfection Byproducts Rule
Noncompliance period start January 1, 2011 · period end March 31, 2011 · first reported June 30, 2023 · EPA return-to-compliance field March 31, 2011

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
0400051OX09241165572 September 24, 2011 Resolving Federal Compliance achieved
Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 0400051272950102010 · TTHM · Stage 1 Disinfectants and Disinfection Byproducts Rule
Noncompliance period start October 1, 2010 · period end December 31, 2010 · first reported June 30, 2023 · EPA return-to-compliance field December 31, 2010

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
0400051OX09241165566 September 24, 2011 Resolving Federal Compliance achieved
Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 0400051272456102010 · Total Haloacetic Acids (HAA5) · Stage 1 Disinfectants and Disinfection Byproducts Rule
Noncompliance period start October 1, 2010 · period end December 31, 2010 · first reported June 30, 2023 · EPA return-to-compliance field December 31, 2010

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
0400051OX09241165567 September 24, 2011 Resolving Federal Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
0400051OX03192411688	March 19, 2024	Resolving	Federal Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
0400051OX08282211203	August 28, 2022	Resolving	Federal Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
0400051OX08282211203	August 28, 2022	Resolving	Federal Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
0400051OX12202211434	December 20, 2022	Resolving	Federal Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
0400051OX06112010394	June 11, 2020	Resolving	Federal Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
0400051OX03011890875	March 1, 2018	Resolving	Federal Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
0400051OX11011686084	November 1, 2016	Resolving	Federal Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
0400051OX08011686039	August 1, 2016	Resolving	Federal Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
0400051OX03011890874	March 1, 2018	Resolving	Federal Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
0400051OX06271685337	June 27, 2016	Resolving	Federal Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
0400051OX02161683010	February 16, 2016	Resolving	Federal Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
0400051OX06271685336	June 27, 2016	Resolving	Federal Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
0400051OX08111581179	August 11, 2015	Resolving	Federal Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
0400051OX06271685335	June 27, 2016	Resolving	Federal Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
0400051OX08111581178	August 11, 2015	Resolving	Federal Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
0400051OX10211476326	October 21, 2014	Resolving	Federal Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
0400051OX10211476325	October 21, 2014	Resolving	Federal Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
0400051OX01011484244	January 1, 2014	Resolving	Federal Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
0400051OX10221476332	October 22, 2014	Resolving	Federal Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
0400051OX10221476331	October 22, 2014	Resolving	Federal Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
0400051OX11161582030	November 16, 2015	Resolving	Federal Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
0400051OX11161582029	November 16, 2015	Resolving	Federal Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
0400051OX01261686127	January 26, 2016	Resolving	Federal Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
0400051OX09261790129	September 26, 2017	Resolving	Federal Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
0400051OX03171269919	March 17, 2012	Resolving	Federal Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
0400051OX03171269920	March 17, 2012	Resolving	Federal Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
0400051OX09241165570	September 24, 2011	Resolving	Federal Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
0400051OX09241165571	September 24, 2011	Resolving	Federal Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
0400051OX09241165573	September 24, 2011	Resolving	Federal Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
0400051OX09241165568	September 24, 2011	Resolving	Federal Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
0400051OX09241165569	September 24, 2011	Resolving	Federal Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
0400051OX09241165572	September 24, 2011	Resolving	Federal Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
0400051OX09241165566	September 24, 2011	Resolving	Federal Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
0400051OX09241165567	September 24, 2011	Resolving	Federal 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