AZ0410188 · Arizona
DESERT WATER COOP
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
- 6
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 38.5 days. The interval uses the reporting periods and dates on file.
Monitoring or reporting · Resolved
Lead Consumer NoticeViolation 1767 · Lead and Copper Rule · Lead and Copper RuleNoncompliance period start January 1, 2025 · period end April 22, 2025 · first reported May 13, 2025 · EPA return-to-compliance field April 22, 2025
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 1293 April 22, 2025 Informal State Violation/Reminder Notice 1294 April 22, 2025 Resolving State Compliance achieved Monitoring or reporting · Resolved
Follow-up Or Routine LCR Tap M/RViolation 1766 · Lead and Copper Rule · Lead and Copper RuleNoncompliance period start October 1, 2023 · period end December 9, 2024 · first reported March 29, 2024 · EPA return-to-compliance field December 9, 2024
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 1285 November 9, 2023 Informal State Violation/Reminder Notice 1286 November 9, 2023 Informal State Public Notification requested 1291 May 2, 2024 Informal State Public Notification received 1292 December 9, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, Source Water (GWR)Violation 1765 · E. COLI · Ground Water RuleNoncompliance period start July 6, 2023 · period end August 11, 2023 · first reported November 15, 2023 · EPA return-to-compliance field August 11, 2023
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 1281 August 11, 2023 Informal State Violation/Reminder Notice 1282 August 11, 2023 Informal State Public Notification requested 1284 August 11, 2023 Resolving State Compliance achieved 1290 May 2, 2024 Informal State Public Notification received Other or unclassified · Resolved
Sample Siting Plan Errors (RTCR)Violation 1764 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start June 1, 2023 · period end July 12, 2023 · first reported August 14, 2023 · EPA return-to-compliance field July 12, 2023
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 1278 July 12, 2023 Informal State Violation/Reminder Notice 1280 July 12, 2023 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, Source Water (GWR)Violation 1760 · E. COLI · Ground Water RuleNoncompliance period start September 3, 2022 · period end September 5, 2022 · first reported November 16, 2022 · EPA return-to-compliance field September 5, 2022
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 1277 September 5, 2022 Resolving State Compliance achieved 1275 October 24, 2022 Informal State Violation/Reminder Notice Other or unclassified · Resolved
Consumer Confidence Report Complete Failure to ReportViolation 1758 · Consumer Confidence Rule · Consumer Confidence RuleNoncompliance period start July 1, 2022 · period end September 26, 2022 · first reported November 16, 2022 · EPA return-to-compliance field September 26, 2022
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 1272 July 29, 2022 Informal State Violation/Reminder Notice 1274 September 26, 2022 Resolving State Compliance achieved Other or unclassified · Resolved
Consumer Confidence Report Inadequate ReportingViolation 1756 · Consumer Confidence Rule · Consumer Confidence RuleNoncompliance period start October 2, 2021 · period end October 29, 2021 · first reported February 16, 2022 · EPA return-to-compliance field October 29, 2021
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 1265 October 26, 2021 Informal State Violation/Reminder Notice 1267 October 29, 2021 Resolving State Compliance achieved Other or unclassified · Resolved
Consumer Confidence Report Complete Failure to ReportViolation 1757 · Consumer Confidence Rule · Consumer Confidence RuleNoncompliance period start July 1, 2021 · period end October 1, 2021 · first reported November 10, 2021 · EPA return-to-compliance field October 1, 2021
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 1270 October 1, 2021 Resolving State Compliance achieved 1268 November 6, 2021 Informal State Violation/Reminder Notice Monitoring or reporting · Resolved
Lead Consumer NoticeViolation 1755 · Lead and Copper Rule · Lead and Copper RuleNoncompliance period start November 28, 2020 · period end December 24, 2020 · first reported February 12, 2021 · EPA return-to-compliance field December 24, 2020
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 1263 December 24, 2020 Resolving State Compliance achieved 1261 January 15, 2021 Informal State Violation/Reminder Notice Monitoring or reporting · Resolved
Follow-up Or Routine LCR Tap M/RViolation 1754 · Lead and Copper Rule · Lead and Copper RuleNoncompliance period start October 1, 2020 · period end October 29, 2020 · first reported February 12, 2021 · EPA return-to-compliance field October 29, 2020
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 1260 October 29, 2020 Resolving State Compliance achieved 1257 November 9, 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