AZ0407003 · Arizona
AGUILA WATER SERVICE
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
- 1
- Monitoring and reporting records
- 6
Counties listed by EPA · Maricopa 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 4 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 39.5 days. The interval uses the reporting periods and dates on file.
EPA health-based flag · Unaddressed by formal action
Treatment Technique, Level 1 Assessment (RTCR)Violation 9356 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start November 13, 2018 · first reported May 14, 2026
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 172 May 7, 2026 Informal State Violation/Reminder Notice 173 May 7, 2026 Informal State Public Notification requested 175 June 10, 2026 Informal State Public Notification received Other or unclassified · Resolved
Public Notification Violation for NPDWR ViolationViolation 9357 · Public Notice · Public Notice Rule and Revised PN RuleNoncompliance period start June 7, 2026 · period end June 10, 2026 · first reported August 14, 2026 · EPA return-to-compliance field June 10, 2026
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 176 June 10, 2026 Resolving State Compliance achieved Monitoring or reporting · Unaddressed by formal action
Monitoring, Source Water (GWR)Violation 9355 · E. COLI · Ground Water RuleNoncompliance period start February 16, 2026 · first reported May 14, 2026
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 168 April 8, 2026 Informal State Violation/Reminder Notice 169 April 8, 2026 Informal State Public Notification requested Monitoring or reporting · Unaddressed by formal action
Monitoring, Source Water (GWR)Violation 9354 · E. COLI · Ground Water RuleNoncompliance period start October 4, 2025 · first reported February 13, 2026
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 164 December 3, 2025 Informal State Violation/Reminder Notice 165 December 3, 2025 Informal State Public Notification requested Monitoring or reporting · Unaddressed by formal action
Monitoring, Source Water (GWR)Violation 9352 · E. COLI · Ground Water RuleNoncompliance period start May 9, 2024 · first reported August 14, 2024
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 158 June 20, 2024 Informal State Violation/Reminder Notice 159 June 20, 2024 Informal State Public Notification requested 160 June 20, 2024 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring, Routine (RTCR)Violation 9351 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start January 1, 2023 · period end January 31, 2023 · first reported May 15, 2023 · EPA return-to-compliance field January 31, 2023
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 157 May 15, 2023 Resolving State Compliance achieved Monitoring or reporting · Resolved
Report Sample Result/Fail Monitor (RTCR)Violation 9349 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start January 1, 2021 · period end February 19, 2021 · first reported March 31, 2021 · EPA return-to-compliance field February 19, 2021
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 146 February 19, 2021 Resolving State Compliance achieved 147 February 26, 2021 Informal State Violation/Reminder Notice Monitoring or reporting · Resolved
Report Sample Result/Fail Monitor (RTCR)Violation 9347 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start October 1, 2020 · period end December 3, 2020 · first reported February 12, 2021 · EPA return-to-compliance field December 3, 2020
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 145 December 3, 2020 Resolving State Compliance achieved 143 December 17, 2020 Informal State Violation/Reminder Notice
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