AZ0410357 · Arizona
METROPOLITAN DWID - DIABLO VILLAGE
Federal fiscal 2026Q3 · EPA violation and follow-up records
- Violation records shown
- 10
- EPA health-based flag
- 0
- Health-based records unresolved in this snapshot
- 0
- Monitoring and reporting records
- 10
Counties listed by EPA · Pima 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 10 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 91 days. The interval uses the reporting periods and dates on file.
Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 1132 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start July 1, 2024 · period end September 30, 2024 · first reported February 24, 2026 · EPA return-to-compliance field September 30, 2024
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 518 November 21, 2024 Informal State Violation/Reminder Notice 519 November 21, 2024 Informal State Public Notification requested 521 June 18, 2025 Informal State Public Notification received 522 July 30, 2025 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 1131 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start July 1, 2024 · period end September 30, 2024 · first reported February 24, 2026 · EPA return-to-compliance field September 30, 2024
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 518 November 21, 2024 Informal State Violation/Reminder Notice 519 November 21, 2024 Informal State Public Notification requested 521 June 18, 2025 Informal State Public Notification received 522 July 30, 2025 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 1126 · Arsenic · Arsenic RuleNoncompliance period start July 1, 2023 · period end September 30, 2023 · first reported February 24, 2026 · EPA return-to-compliance field September 30, 2023
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 505 October 18, 2023 Informal State Violation/Reminder Notice 507 October 18, 2023 Resolving State Compliance achieved Monitoring or reporting · Resolved
Report Sample Result/Fail Monitor (RTCR)Violation 1124 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start July 1, 2023 · period end August 16, 2023 · first reported February 24, 2026 · EPA return-to-compliance field August 16, 2023
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 498 August 16, 2023 Informal State Violation/Reminder Notice 500 August 16, 2023 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 1123 · Arsenic · Arsenic RuleNoncompliance period start April 1, 2023 · period end June 30, 2023 · first reported August 14, 2023 · EPA return-to-compliance field June 30, 2023
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 495 August 1, 2023 Informal State Violation/Reminder Notice 497 August 1, 2023 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 1128 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start January 1, 2023 · period end October 25, 2023 · first reported February 24, 2026 · EPA return-to-compliance field October 25, 2023
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 508 October 25, 2023 Informal State Violation/Reminder Notice 510 October 25, 2023 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 1127 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start January 1, 2023 · period end October 25, 2023 · first reported November 15, 2023 · EPA return-to-compliance field October 25, 2023
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 508 October 25, 2023 Informal State Violation/Reminder Notice 510 October 25, 2023 Resolving State Compliance achieved Monitoring or reporting · Resolved
Report Sample Result/Fail Monitor (RTCR)Violation 1122 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start July 1, 2022 · period end August 23, 2022 · first reported November 16, 2022 · EPA return-to-compliance field August 23, 2022
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 489 August 19, 2022 Informal State Violation/Reminder Notice 493 August 19, 2022 Informal State Violation/Reminder Notice 492 August 23, 2022 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 1121 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts RuleNoncompliance period start July 1, 2021 · period end September 30, 2021 · first reported February 16, 2022 · EPA return-to-compliance field September 30, 2021
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 488 November 15, 2021 Resolving State Compliance achieved 486 November 22, 2021 Informal State Violation/Reminder Notice Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 1118 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts RuleNoncompliance period start April 1, 2021 · period end June 30, 2021 · first reported August 12, 2021 · EPA return-to-compliance field June 30, 2021
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 481 July 28, 2021 Resolving State Compliance achieved 479 July 29, 2021 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