NN0403023 · Arizona

Round Rock NTUA

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

Violation records shown: 4
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 4 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 1,729.5 days. The interval uses the reporting periods and dates on file.

Monitoring or reporting · Resolved

Monitoring, Routine (IDSE)Violation 040302330295012020 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start January 1, 2020 · period end December 31, 2020 · first reported March 25, 2021 · EPA return-to-compliance field December 31, 2020

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
0403023FG03312138434	March 31, 2021	Informal	State Public Notification issued
0403023FJ03312138432	March 31, 2021	Informal	State Formal Notice of Violation issued
0403023OX07122138942	July 12, 2021	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, Routine (IDSE)Violation 040302330245612020 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start January 1, 2020 · period end December 31, 2020 · first reported March 25, 2021 · EPA return-to-compliance field December 31, 2020

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
0403023FG03312138435	March 31, 2021	Informal	State Public Notification issued
0403023FJ03312138433	March 31, 2021	Informal	State Formal Notice of Violation issued
0403023OX07122138943	July 12, 2021	Resolving	State Compliance achieved

Other or unclassified · Resolved

Sample Siting Plan Errors (RTCR)Violation 04030235A800042016 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start April 1, 2016 · period end February 10, 2025 · first reported October 6, 2024 · EPA return-to-compliance field February 10, 2025

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
0403023FJ08282441416	August 28, 2024	Informal	State Formal Notice of Violation issued
0403023OX02102541659	February 10, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Failure Submit IDSE/Subpart V Plan RptViolation 0403023350600102013 · Stage 2 Disinfectants and Disinfection Byproducts Rule · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start October 1, 2013 · period end March 22, 2022 · first reported September 22, 2017 · EPA return-to-compliance field March 22, 2022

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
0403023FG08251733376	August 25, 2017	Informal	State Public Notification issued
0403023FJ08251733375	August 25, 2017	Informal	State Formal Notice of Violation issued
0403023OX03222239168	March 22, 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