AZ0414005 · Arizona
SAN LUIS CITY OF
Federal fiscal 2026Q3 · EPA violation and follow-up records
- Violation records shown
- 12
- EPA health-based flag
- 4
- Health-based records unresolved in this snapshot
- 1
- Monitoring and reporting records
- 7
Counties listed by EPA · Yuma 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 8 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 112 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 45295 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start September 15, 2021 · first reported May 14, 2026
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 22441 October 27, 2021 Informal State Violation/Reminder Notice 22442 October 27, 2021 Informal State Public Notification requested EPA health-based flag · Archived
Maximum Contaminant Level Violation, AverageViolation 45327 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start April 1, 2026 · period end June 30, 2026 · first reported August 14, 2026 · EPA return-to-compliance field June 30, 2026
No linked action row appears in the records shown.Monitoring or reporting · Archived
Monitoring and Reporting (DBP)Violation 45326 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start April 1, 2026 · period end June 30, 2026 · first reported August 14, 2026 · EPA return-to-compliance field June 30, 2026
No linked action row appears in the records shown.Monitoring or reporting · Archived
Monitoring and Reporting (DBP)Violation 45325 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start April 1, 2026 · period end June 30, 2026 · first reported August 14, 2026 · EPA return-to-compliance field June 30, 2026
No linked action row appears in the records shown.Monitoring or reporting · Resolved
Follow-up Or Routine LCR Tap M/RViolation 45322 · Lead and Copper Rule · Lead and Copper RuleNoncompliance period start October 1, 2024 · period end November 1, 2024 · first reported February 18, 2025 · EPA return-to-compliance field November 1, 2024
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 22428 October 23, 2024 Informal State Violation/Reminder Notice 22430 November 1, 2024 Resolving State Compliance achieved EPA health-based flag · Resolved
Failure To Address DeficiencyViolation 45324 · Groundwater Rule · Ground Water RuleNoncompliance period start June 6, 2024 · period end December 30, 2024 · first reported December 31, 2024 · EPA return-to-compliance field December 30, 2024
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 22435 December 30, 2024 Informal State Violation/Reminder Notice 22436 December 30, 2024 Informal State Public Notification requested 22438 December 30, 2024 Resolving State Compliance achieved 22439 January 3, 2025 Informal State Public Notification received Monitoring or reporting · Resolved
Report Sample Result/Fail Monitor (RTCR)Violation 45321 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start February 1, 2024 · period end March 19, 2024 · first reported May 15, 2024 · EPA return-to-compliance field March 19, 2024
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 22425 March 19, 2024 Informal State Violation/Reminder Notice 22427 March 19, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Lead Consumer NoticeViolation 45298 · Lead and Copper Rule · Lead and Copper RuleNoncompliance period start September 28, 2021 · period end January 31, 2022 · first reported February 16, 2022 · EPA return-to-compliance field January 31, 2022
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 22413 January 31, 2022 Informal State Violation/Reminder Notice 22415 January 31, 2022 Resolving State Compliance achieved Monitoring or reporting · Resolved
Failure Submit IDSE/Subpart V Plan RptViolation 45297 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start September 8, 2021 · period end March 7, 2022 · first reported February 16, 2022 · EPA return-to-compliance field March 7, 2022
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 22411 December 8, 2021 Informal State Violation/Reminder Notice 22416 March 7, 2022 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, Source Water (GWR)Violation 45294 · E. COLI · Ground Water RuleNoncompliance period start September 1, 2021 · period end July 5, 2022 · first reported November 10, 2021 · EPA return-to-compliance field July 5, 2022
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 22404 October 15, 2021 Informal State Violation/Reminder Notice 22421 July 5, 2022 Resolving State Compliance achieved EPA health-based flag · Resolved
Failure To Address DeficiencyViolation 45323 · Groundwater Rule · Ground Water RuleNoncompliance period start August 5, 2021 · period end November 12, 2021 · first reported December 31, 2024 · EPA return-to-compliance field November 12, 2021
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 22434 November 12, 2021 Resolving State Compliance achieved 22431 December 14, 2024 Informal State Violation/Reminder Notice 22432 December 14, 2024 Informal State Public Notification requested 22440 January 3, 2025 Informal State Public Notification received Other or unclassified · Resolved
Sample Siting Plan Errors (RTCR)Violation 45293 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start August 1, 2021 · period end October 28, 2021 · first reported November 10, 2021 · EPA return-to-compliance field October 28, 2021
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 22397 October 15, 2021 Informal State Violation/Reminder Notice 22402 October 28, 2021 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