AZ0410011 · Arizona
RIO VIEJO WATER
Federal fiscal 2026Q3 · EPA violation and follow-up records
- Violation records shown
- 6
- EPA health-based flag
- 0
- Health-based records unresolved in this snapshot
- 0
- Monitoring and reporting records
- 4
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 6 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 211.5 days. The interval uses the reporting periods and dates on file.
Other or unclassified · Resolved
Public Notification Violation for NPDWR ViolationViolation 5 · Public Notice · Public Notice Rule and Revised PN RuleNoncompliance period start February 16, 2025 · period end April 16, 2025 · first reported February 24, 2026 · EPA return-to-compliance field April 16, 2025
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 21 April 6, 2025 Informal State Violation/Reminder Notice 23 April 16, 2025 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 6 · Arsenic · Arsenic RuleNoncompliance period start January 1, 2025 · period end December 31, 2025 · first reported August 14, 2026 · EPA return-to-compliance field December 31, 2025
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 29 February 9, 2026 Informal State Violation/Reminder Notice 30 February 9, 2026 Resolving State Compliance achieved Other or unclassified · Resolved
Public Notification Violation for NPDWR ViolationViolation 3 · Public Notice · Public Notice Rule and Revised PN RuleNoncompliance period start February 15, 2023 · period end March 30, 2023 · first reported February 24, 2026 · EPA return-to-compliance field March 30, 2023
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 13 March 21, 2023 Informal State Violation/Reminder Notice 16 March 30, 2023 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 4 · Arsenic · Arsenic RuleNoncompliance period start January 1, 2023 · period end December 31, 2023 · first reported February 24, 2026 · EPA return-to-compliance field December 31, 2023
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 17 February 1, 2024 Informal State Violation/Reminder Notice 18 February 1, 2024 Informal State Public Notification requested 20 April 4, 2024 Resolving State Compliance achieved 24 April 16, 2025 Informal State Public Notification received Monitoring or reporting · Resolved
Report Sample Result/Fail Monitor (RTCR)Violation 1 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start December 1, 2021 · period end January 27, 2022 · first reported February 16, 2022 · EPA return-to-compliance field January 27, 2022
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 6 January 26, 2022 Informal State Violation/Reminder Notice 5 January 27, 2022 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 2 · Arsenic · Arsenic RuleNoncompliance period start January 1, 2021 · period end December 31, 2021 · first reported February 16, 2022 · EPA return-to-compliance field December 31, 2021
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 10 February 14, 2022 Informal State Public Notification received 8 February 14, 2022 Informal State Violation/Reminder Notice 9 February 14, 2022 Informal State Public Notification requested 12 March 4, 2022 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