AZ0402041 · Arizona
LA COSTA WATER USERS ASSOC
Federal fiscal 2026Q3 · EPA violation and follow-up records
- Violation records shown
- 14
- EPA health-based flag
- 2
- Health-based records unresolved in this snapshot
- 0
- Monitoring and reporting records
- 5
Counties listed by EPA · Cochise 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 13 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 106 days. The interval uses the reporting periods and dates on file.
Other or unclassified · Resolved
Consumer Confidence Report Inadequate ReportingViolation 3881 · Consumer Confidence Rule · Consumer Confidence RuleNoncompliance period start October 2, 2025 · period end June 15, 2026 · first reported February 13, 2026 · EPA return-to-compliance field June 15, 2026
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 1428 November 5, 2025 Informal State Violation/Reminder Notice 1433 June 15, 2026 Resolving State Compliance achieved Other or unclassified · Resolved
Consumer Confidence Report Complete Failure to ReportViolation 3882 · Consumer Confidence Rule · Consumer Confidence RuleNoncompliance period start July 1, 2025 · period end June 15, 2026 · first reported November 17, 2025 · EPA return-to-compliance field June 15, 2026
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 1430 November 5, 2025 Informal State Violation/Reminder Notice 1432 June 15, 2026 Resolving State Compliance achieved Other or unclassified · Resolved
Consumer Confidence Report Inadequate ReportingViolation 3879 · Consumer Confidence Rule · Consumer Confidence RuleNoncompliance period start October 2, 2024 · period end October 22, 2024 · first reported February 18, 2025 · EPA return-to-compliance field October 22, 2024
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 1419 October 8, 2024 Informal State Violation/Reminder Notice 1421 October 22, 2024 Resolving State Compliance achieved EPA health-based flag · Resolved
Failure To Address DeficiencyViolation 3880 · Groundwater Rule · Ground Water RuleNoncompliance period start October 14, 2023 · period end January 28, 2024 · first reported December 31, 2024 · EPA return-to-compliance field January 28, 2024
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 1427 January 28, 2024 Resolving State Compliance achieved 1422 December 11, 2024 Informal State Violation/Reminder Notice 1423 December 11, 2024 Informal State Public Notification requested 1425 January 3, 2025 Informal State Public Notification received Other or unclassified · Resolved
Consumer Confidence Report Complete Failure to ReportViolation 3878 · Consumer Confidence Rule · Consumer Confidence RuleNoncompliance period start July 1, 2023 · period end October 6, 2023 · first reported November 15, 2023 · EPA return-to-compliance field October 6, 2023
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 1416 October 6, 2023 Informal State Violation/Reminder Notice 1418 October 6, 2023 Resolving State Compliance achieved EPA health-based flag · Resolved
Treatment Technique, Level 1 Assessment (RTCR)Violation 3876 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start November 8, 2022 · period end January 24, 2023 · first reported February 15, 2023 · EPA return-to-compliance field January 24, 2023
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 1406 January 24, 2023 Informal State Violation/Reminder Notice 1407 January 24, 2023 Informal State Public Notification requested 1409 January 24, 2023 Resolving State Compliance achieved 1413 February 19, 2023 Informal State Public Notification received Monitoring or reporting · Unaddressed by formal action
Monitoring, Source Water (GWR)Violation 3875 · E. COLI · Ground Water RuleNoncompliance period start October 21, 2022 · first reported February 15, 2023
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 1403 November 16, 2022 Informal State Violation/Reminder Notice 1404 November 16, 2022 Informal State Public Notification requested 1414 February 19, 2023 Informal State Public Notification received Other or unclassified · Resolved
Consumer Confidence Report Inadequate ReportingViolation 3874 · Consumer Confidence Rule · Consumer Confidence RuleNoncompliance period start October 2, 2022 · period end September 14, 2023 · first reported February 15, 2023 · EPA return-to-compliance field September 14, 2023
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 1400 October 18, 2022 Informal State Violation/Reminder Notice 1415 September 14, 2023 Resolving State Compliance achieved Other or unclassified · Resolved
Consumer Confidence Report Complete Failure to ReportViolation 3873 · Consumer Confidence Rule · Consumer Confidence RuleNoncompliance period start July 1, 2022 · period end September 14, 2023 · first reported November 16, 2022 · EPA return-to-compliance field September 14, 2023
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 1398 August 8, 2022 Informal State Violation/Reminder Notice 1415 September 14, 2023 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, Source Water (GWR)Violation 3871 · E. COLI · Ground Water RuleNoncompliance period start June 3, 2021 · period end June 8, 2021 · first reported August 12, 2021 · EPA return-to-compliance field June 8, 2021
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 1393 June 8, 2021 Resolving State Compliance achieved 1391 July 29, 2021 Informal State Violation/Reminder Notice Other or unclassified · Resolved
Public Notification Violation for NPDWR ViolationViolation 3870 · Public Notice · Public Notice Rule and Revised PN RuleNoncompliance period start February 26, 2021 · period end July 26, 2022 · first reported March 31, 2021 · EPA return-to-compliance field July 26, 2022
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 1387 March 28, 2021 Informal State Violation/Reminder Notice 1397 July 26, 2022 Resolving State no longer subject to Rule Monitoring or reporting · Resolved
Lead Consumer NoticeViolation 3869 · Lead and Copper Rule · Lead and Copper RuleNoncompliance period start January 1, 2021 · period end October 22, 2021 · first reported March 31, 2021 · EPA return-to-compliance field October 22, 2021
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 1383 January 26, 2021 Informal State Violation/Reminder Notice 1384 January 26, 2021 Informal State Public Notification requested 1390 October 22, 2021 Resolving State Compliance achieved Monitoring or reporting · Resolved
Report Sample Result/Fail Monitor (RTCR)Violation 3868 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start November 1, 2020 · period end December 30, 2020 · first reported February 12, 2021 · EPA return-to-compliance field December 30, 2020
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 1380 December 30, 2020 Informal State Violation/Reminder Notice 1382 December 30, 2020 Resolving State Compliance achieved Monitoring or reporting · Resolved
Follow-up Or Routine LCR Tap M/RViolation 3866 · Lead and Copper Rule · Lead and Copper RuleNoncompliance period start October 1, 2020 · period end October 26, 2020 · first reported February 12, 2021 · EPA return-to-compliance field October 26, 2020
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 1379 October 26, 2020 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