AZ0410003 · Arizona

ARIZONA WATER CO - AJO

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

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 2 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 210 days. The interval uses the reporting periods and dates on file.

Monitoring or reporting · Unaddressed by formal action
Lead Consumer NoticeViolation 2782 · Lead and Copper Rule · Lead and Copper Rule
Noncompliance period start January 1, 2026 · first reported May 14, 2026

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
41 April 8, 2026 Informal State Violation/Reminder Notice
Monitoring or reporting · Resolved
Report Sample Result/Fail Monitor (RTCR)Violation 2780 · Revised Total Coliform Rule · Revised Total Coliform Rule
Noncompliance period start October 1, 2020 · period end November 25, 2020 · first reported February 12, 2021 · EPA return-to-compliance field November 25, 2020

2 linked actions

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
36 November 25, 2020 Resolving State Compliance achieved
34 November 27, 2020 Informal State Violation/Reminder Notice

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
41	April 8, 2026	Informal	State Violation/Reminder Notice

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
36	November 25, 2020	Resolving	State Compliance achieved
34	November 27, 2020	Informal	State Violation/Reminder Notice

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 2781 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start September 1, 2019 · period end August 31, 2020 · first reported February 2, 2021 · EPA return-to-compliance field August 31, 2020

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
37	December 1, 2020	Informal	State Violation/Reminder Notice
38	December 1, 2020	Informal	State Public Notification requested
40	September 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