AZ0410098 · Arizona
RILLITO WATER USERS ASSOC
Federal fiscal 2026Q3 · EPA violation and follow-up records
- Violation records shown
- 11
- EPA health-based flag
- 1
- Health-based records unresolved in this snapshot
- 0
- Monitoring and reporting records
- 8
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 9 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 · Unaddressed by formal action
Report Sample Result/Fail Monitor (RTCR)Violation 7901 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start June 1, 2026 · first reported August 14, 2026
No linked action row appears in the records shown.Monitoring or reporting · Unaddressed by formal action
Notification, Known or Potential LSLViolation 7900 · LEAD AND COPPER RULE REVISIONS · Lead and Copper Rule RevisionsNoncompliance period start July 2, 2025 · first reported February 24, 2026
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3834 February 5, 2026 Informal State Violation/Reminder Notice Other or unclassified · Resolved
Public Notification Violation for NPDWR ViolationViolation 7899 · Public Notice · Public Notice Rule and Revised PN RuleNoncompliance period start December 20, 2024 · period end June 30, 2025 · first reported February 24, 2026 · EPA return-to-compliance field June 30, 2025
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3827 January 30, 2025 Informal State Violation/Reminder Notice 3832 June 30, 2025 Resolving State Compliance achieved EPA health-based flag · Resolved
LSL InventoryViolation 7898 · LEAD AND COPPER RULE REVISIONS · Lead and Copper Rule RevisionsNoncompliance period start October 17, 2024 · period end February 2, 2025 · first reported February 24, 2026 · EPA return-to-compliance field February 2, 2025
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3824 November 14, 2024 Informal State Violation/Reminder Notice 3825 November 14, 2024 Informal State Public Notification requested 3829 February 2, 2025 Resolving State Compliance achieved 3833 June 30, 2025 Informal State Public Notification received Monitoring or reporting · Resolved
LSL ReportingViolation 7897 · LEAD AND COPPER RULE REVISIONS · Lead and Copper Rule RevisionsNoncompliance period start October 17, 2024 · period end February 2, 2025 · first reported February 18, 2025 · EPA return-to-compliance field February 2, 2025
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3821 November 7, 2024 Informal State Violation/Reminder Notice 3822 November 7, 2024 Informal State Public Notification requested 3829 February 2, 2025 Resolving State Compliance achieved 3831 June 30, 2025 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 7896 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts RuleNoncompliance period start October 1, 2023 · period end December 31, 2023 · first reported March 29, 2024 · EPA return-to-compliance field December 31, 2023
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3818 February 27, 2024 Informal State Violation/Reminder Notice 3820 February 27, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 7891 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts RuleNoncompliance period start April 1, 2023 · period end June 30, 2023 · first reported February 24, 2026 · 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 3811 July 20, 2023 Informal State Violation/Reminder Notice 3813 July 20, 2023 Resolving State Compliance achieved Other or unclassified · Resolved
Consumer Confidence Report Inadequate ReportingViolation 7885 · Consumer Confidence Rule · Consumer Confidence RuleNoncompliance period start October 2, 2022 · period end November 8, 2022 · first reported February 15, 2023 · EPA return-to-compliance field November 8, 2022
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3785 October 19, 2022 Informal State Violation/Reminder Notice 3805 November 8, 2022 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 7887 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts RuleNoncompliance period start July 1, 2022 · period end September 30, 2022 · first reported December 29, 2022 · EPA return-to-compliance field September 30, 2022
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3793 November 18, 2022 Informal State Violation/Reminder Notice 3802 November 18, 2022 Informal State Violation/Reminder Notice 3806 May 19, 2023 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 7882 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts RuleNoncompliance period start January 1, 2022 · period end March 31, 2022 · first reported May 16, 2022 · EPA return-to-compliance field March 31, 2022
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3784 April 12, 2022 Resolving State Compliance achieved 3782 April 28, 2022 Informal State Violation/Reminder Notice Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 7878 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts RuleNoncompliance period start October 1, 2021 · period end December 31, 2021 · first reported February 16, 2022 · EPA return-to-compliance field December 31, 2021
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3777 February 2, 2022 Resolving State Compliance achieved 3775 February 11, 2022 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