AZ0411136 · Arizona
EPCOR - SAN TAN ANTHEM
Federal fiscal 2026Q3 · EPA violation and follow-up records
- Violation records shown
- 6
- EPA health-based flag
- 0
- Health-based records unresolved in this snapshot
- 0
- Monitoring and reporting records
- 5
Counties listed by EPA · Pinal 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 6 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 60 days. The interval uses the reporting periods and dates on file.
Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 133 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts RuleNoncompliance period start October 1, 2024 · period end October 31, 2024 · first reported February 24, 2026 · EPA return-to-compliance field October 31, 2024
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 107 January 29, 2025 Informal State Violation/Reminder Notice 109 January 29, 2025 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 132 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts RuleNoncompliance period start April 1, 2024 · period end April 30, 2024 · first reported February 24, 2026 · EPA return-to-compliance field April 30, 2024
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 100 August 5, 2024 Resolving State Compliance achieved 98 August 5, 2024 Informal State Violation/Reminder Notice Monitoring or reporting · Resolved
Monitoring, RegularViolation 127 · Nitrate · Nitrate RuleNoncompliance period start January 1, 2023 · period end December 31, 2023 · first reported February 24, 2026 · EPA return-to-compliance field December 31, 2023
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 89 August 7, 2023 Informal State Violation/Reminder Notice 90 August 7, 2023 Informal State Public Notification requested 101 September 6, 2024 Informal State Public Notification received 102 October 3, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 124 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts RuleNoncompliance period start April 1, 2022 · period end June 30, 2022 · first reported August 15, 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 86 July 29, 2022 Informal State Violation/Reminder Notice 88 July 29, 2022 Resolving State Compliance achieved Other or unclassified · Resolved
Public Notification Violation for NPDWR ViolationViolation 123 · Public Notice · Public Notice Rule and Revised PN RuleNoncompliance period start March 2, 2022 · period end June 20, 2022 · first reported May 16, 2022 · EPA return-to-compliance field June 20, 2022
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 79 April 13, 2022 Informal State Violation/Reminder Notice 81 June 20, 2022 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, Routine (RTCR)Violation 122 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start January 1, 2021 · period end January 31, 2021 · first reported March 31, 2021 · EPA return-to-compliance field January 31, 2021
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 78 February 22, 2021 Resolving State Compliance achieved 74 March 1, 2021 Informal State Violation/Reminder Notice 75 March 1, 2021 Informal State Public Notification requested
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