AZ0408040 · Arizona
EPCOR - WILLOW VALLEY/KING STREET
Federal fiscal 2026Q3 · EPA violation and follow-up records
- Violation records shown
- 8
- EPA health-based flag
- 1
- Health-based records unresolved in this snapshot
- 0
- Monitoring and reporting records
- 7
Counties listed by EPA · Mohave 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 7 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 89 days. The interval uses the reporting periods and dates on file.
Monitoring or reporting · Archived
Monitoring and Reporting (DBP)Violation 9287 · Chlorite · Stage 1 Disinfectants and Disinfection Byproducts RuleNoncompliance period start April 1, 2026 · period end April 30, 2026 · first reported August 14, 2026 · EPA return-to-compliance field April 30, 2026
No linked action row appears in the records shown.Monitoring or reporting · Resolved
Notification, Known or Potential LSLViolation 9286 · LEAD AND COPPER RULE REVISIONS · Lead and Copper Rule RevisionsNoncompliance period start July 2, 2025 · period end April 29, 2026 · first reported February 13, 2026 · EPA return-to-compliance field April 29, 2026
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 905 January 30, 2026 Informal State Violation/Reminder Notice 907 April 29, 2026 Resolving State no longer subject to Rule EPA health-based flag · Resolved
Maximum Contaminant Level Violation, AverageViolation 9284 · Chlorite · Stage 1 Disinfectants and Disinfection Byproducts RuleNoncompliance period start April 1, 2025 · period end April 30, 2025 · first reported August 15, 2025 · EPA return-to-compliance field April 30, 2025
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 900 May 1, 2025 Informal State Violation/Reminder Notice 901 May 1, 2025 Informal State Public Notification requested 904 May 20, 2025 Resolving State Compliance achieved 903 May 30, 2025 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 9282 · Chlorite · Stage 1 Disinfectants and Disinfection Byproducts RuleNoncompliance period start December 1, 2022 · period end December 31, 2022 · first reported May 15, 2023 · EPA return-to-compliance field December 31, 2022
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 894 February 16, 2023 Resolving State Compliance achieved 895 February 16, 2023 Informal State Violation/Reminder Notice Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 9281 · Chlorite · Stage 1 Disinfectants and Disinfection Byproducts RuleNoncompliance period start June 1, 2022 · period end June 30, 2022 · first reported September 29, 2022 · EPA return-to-compliance field June 30, 2022
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 893 July 27, 2022 Resolving State Compliance achieved 891 August 19, 2022 Informal State Violation/Reminder Notice Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 9280 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start October 1, 2021 · period end December 31, 2021 · first reported May 16, 2022 · EPA return-to-compliance field December 31, 2021
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 890 February 2, 2022 Resolving State Compliance achieved 888 March 17, 2022 Informal State Violation/Reminder Notice Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 9279 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start October 1, 2021 · period end December 31, 2021 · first reported May 16, 2022 · EPA return-to-compliance field December 31, 2021
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 890 February 2, 2022 Resolving State Compliance achieved 888 March 17, 2022 Informal State Violation/Reminder Notice Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 9277 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts RuleNoncompliance period start January 1, 2021 · period end March 31, 2021 · first reported August 12, 2021 · EPA return-to-compliance field March 31, 2021
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 885 May 27, 2021 Informal State Violation/Reminder Notice 887 May 28, 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