090400003 · Arizona

Chui Chu

Federal fiscal 2026Q3 · EPA violation and follow-up records

Violation records shown: 3
EPA health-based flag: 0
Health-based records unresolved in this snapshot: 0
Monitoring and reporting records: 3

Find the utility’s annual water quality report. For current advisories, check the utility or local drinking-water authority.

Violations and what followed

Among 2 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 155 days. The interval uses the reporting periods and dates on file.

Monitoring or reporting · Unaddressed by formal action
Follow-up Or Routine LCR Tap M/RViolation 040000352500012026 · Lead and Copper Rule · Lead and Copper Rule
Noncompliance period start January 1, 2026 · first reported September 30, 2026
No linked action row appears in the records shown.

Monitoring or reporting · Resolved

Follow-up Or Routine LCR Tap M/RViolation 040000352500072025 · Lead and Copper Rule · Lead and Copper Rule

Noncompliance period start July 1, 2025 · period end February 6, 2026 · first reported March 18, 2026 · EPA return-to-compliance field February 6, 2026

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
0400003OX02062612512	February 6, 2026	Resolving	Federal Compliance achieved
0400003IA04012612508	April 1, 2026	Informal	Federal Violation/Reminder Notice

Monitoring or reporting · Resolved
Monitoring, RegularViolation 040000303104042015 · Nitrate · Nitrate Rule
Noncompliance period start April 1, 2015 · period end June 30, 2015 · first reported June 30, 2023 · EPA return-to-compliance field June 30, 2015

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
0400003OX08211581635 August 21, 2015 Resolving Federal Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
0400003OX08211581635	August 21, 2015	Resolving	Federal 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