AZ0412005 · Arizona

SONOITA VALLEY (SOUTH) WATER COMPANY

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

Violation records shown: 23
EPA health-based flag: 2
Health-based records unresolved in this snapshot: 1
Monitoring and reporting records: 15

Counties listed by EPA · Santa Cruz 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 20 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 90.5 days. The interval uses the reporting periods and dates on file.

EPA health-based flag · Unaddressed by formal action
Treatment Technique, Level 1 Assessment (RTCR)Violation 4761 · Revised Total Coliform Rule · Revised Total Coliform Rule
Noncompliance period start July 7, 2019 · first reported May 14, 2026
No linked action row appears in the records shown.
Other or unclassified · Unaddressed by formal action
Public Notification Violation for NPDWR ViolationViolation 4786 · Public Notice · Public Notice Rule and Revised PN Rule
Noncompliance period start October 18, 2025 · first reported February 13, 2026

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
1556 November 24, 2025 Informal State Violation/Reminder Notice
Other or unclassified · Unaddressed by formal action
Public Notification Violation for NPDWR ViolationViolation 4783 · Public Notice · Public Notice Rule and Revised PN Rule
Noncompliance period start December 20, 2024 · first reported February 18, 2025

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
1554 January 26, 2025 Informal State Violation/Reminder Notice

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
1556	November 24, 2025	Informal	State Violation/Reminder Notice

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
1554	January 26, 2025	Informal	State Violation/Reminder Notice

EPA health-based flag · Resolved

LSL InventoryViolation 4782 · LEAD AND COPPER RULE REVISIONS · Lead and Copper Rule Revisions

Noncompliance period start October 17, 2024 · period end December 17, 2025 · first reported February 18, 2025 · EPA return-to-compliance field December 17, 2025

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
1544	November 15, 2024	Informal	State Violation/Reminder Notice
1545	November 15, 2024	Informal	State Public Notification requested
1559	December 17, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

LSL ReportingViolation 4781 · LEAD AND COPPER RULE REVISIONS · Lead and Copper Rule Revisions

Noncompliance period start October 17, 2024 · period end December 17, 2025 · first reported February 18, 2025 · EPA return-to-compliance field December 17, 2025

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
1541	November 15, 2024	Informal	State Violation/Reminder Notice
1542	November 15, 2024	Informal	State Public Notification requested
1558	December 17, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved
Monitoring, RegularViolation 4785 · Gross Alpha, Excl. Radon and U · Radionuclides and Revised Rad Rule
Noncompliance period start October 1, 2024 · period end December 31, 2024 · first reported February 18, 2025 · EPA return-to-compliance field December 31, 2024

2 linked actions

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
1553 January 22, 2025 Resolving State Compliance achieved
1551 January 27, 2025 Informal State Violation/Reminder Notice
Monitoring or reporting · Resolved
Monitoring, RegularViolation 4784 · Combined Uranium · Radionuclides and Revised Rad Rule
Noncompliance period start October 1, 2024 · period end December 31, 2024 · first reported February 18, 2025 · EPA return-to-compliance field December 31, 2024

2 linked actions

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
1553 January 22, 2025 Resolving State Compliance achieved
1549 January 27, 2025 Informal State Violation/Reminder Notice
Other or unclassified · Resolved
Public Notification Violation for NPDWR ViolationViolation 4780 · Public Notice · Public Notice Rule and Revised PN Rule
Noncompliance period start April 28, 2024 · period end June 28, 2024 · first reported August 14, 2024 · EPA return-to-compliance field June 28, 2024

2 linked actions

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
1535 May 6, 2024 Informal State Violation/Reminder Notice
1539 June 28, 2024 Resolving State Compliance achieved
Other or unclassified · Resolved
Public Notification Violation for NPDWR ViolationViolation 4779 · Public Notice · Public Notice Rule and Revised PN Rule
Noncompliance period start April 28, 2024 · period end June 28, 2024 · first reported August 14, 2024 · EPA return-to-compliance field June 28, 2024

2 linked actions

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
1533 May 6, 2024 Informal State Violation/Reminder Notice
1537 June 28, 2024 Resolving State Compliance achieved
Other or unclassified · Resolved
Public Notification Violation for NPDWR ViolationViolation 4778 · Public Notice · Public Notice Rule and Revised PN Rule
Noncompliance period start May 18, 2023 · period end June 30, 2023 · first reported August 14, 2023 · 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
1531 June 20, 2023 Informal State Violation/Reminder Notice
1524 June 30, 2023 Resolving State Compliance achieved
Other or unclassified · Resolved
Public Notification Violation for NPDWR ViolationViolation 4777 · Public Notice · Public Notice Rule and Revised PN Rule
Noncompliance period start May 18, 2023 · period end June 30, 2023 · first reported August 14, 2023 · 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
1529 June 20, 2023 Informal State Violation/Reminder Notice
1526 June 30, 2023 Resolving State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
1553	January 22, 2025	Resolving	State Compliance achieved
1551	January 27, 2025	Informal	State Violation/Reminder Notice

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
1553	January 22, 2025	Resolving	State Compliance achieved
1549	January 27, 2025	Informal	State Violation/Reminder Notice

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
1535	May 6, 2024	Informal	State Violation/Reminder Notice
1539	June 28, 2024	Resolving	State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
1533	May 6, 2024	Informal	State Violation/Reminder Notice
1537	June 28, 2024	Resolving	State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
1531	June 20, 2023	Informal	State Violation/Reminder Notice
1524	June 30, 2023	Resolving	State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
1529	June 20, 2023	Informal	State Violation/Reminder Notice
1526	June 30, 2023	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 4776 · Gross Alpha, Excl. Radon and U · Radionuclides and Revised Rad Rule

Noncompliance period start January 1, 2023 · period end March 31, 2023 · first reported May 15, 2023 · EPA return-to-compliance field March 31, 2023

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
1521	April 28, 2023	Informal	State Violation/Reminder Notice
1522	April 28, 2023	Informal	State Public Notification requested
1528	October 18, 2023	Resolving	State Compliance achieved
1538	July 18, 2024	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 4775 · Combined Uranium · Radionuclides and Revised Rad Rule

Noncompliance period start January 1, 2023 · period end March 31, 2023 · first reported May 15, 2023 · EPA return-to-compliance field March 31, 2023

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
1518	April 28, 2023	Informal	State Violation/Reminder Notice
1519	April 28, 2023	Informal	State Public Notification requested
1528	October 18, 2023	Resolving	State Compliance achieved
1540	July 18, 2024	Informal	State Public Notification received

Monitoring or reporting · Resolved
Monitoring, RegularViolation 4774 · Gross Alpha, Excl. Radon and U · Radionuclides and Revised Rad Rule
Noncompliance period start October 1, 2022 · period end December 31, 2022 · first reported February 15, 2023 · EPA return-to-compliance field December 31, 2022

2 linked actions

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
1515 February 13, 2023 Informal State Violation/Reminder Notice
1517 February 13, 2023 Resolving State Compliance achieved
Monitoring or reporting · Resolved
Monitoring, RegularViolation 4773 · Combined Uranium · Radionuclides and Revised Rad Rule
Noncompliance period start October 1, 2022 · period end December 31, 2022 · first reported February 15, 2023 · EPA return-to-compliance field December 31, 2022

2 linked actions

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
1513 February 13, 2023 Informal State Violation/Reminder Notice
1517 February 13, 2023 Resolving State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
1515	February 13, 2023	Informal	State Violation/Reminder Notice
1517	February 13, 2023	Resolving	State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
1513	February 13, 2023	Informal	State Violation/Reminder Notice
1517	February 13, 2023	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 4772 · Combined Uranium · Radionuclides and Revised Rad Rule

Noncompliance period start January 1, 2022 · period end March 31, 2022 · first reported August 15, 2022 · EPA return-to-compliance field March 31, 2022

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
1507	May 17, 2022	Informal	State Violation/Reminder Notice
1508	May 17, 2022	Informal	State Public Notification requested
1510	June 23, 2022	Resolving	State Compliance achieved
1527	June 30, 2023	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 4771 · Gross Alpha, Excl. Radon and U · Radionuclides and Revised Rad Rule

Noncompliance period start January 1, 2022 · period end March 31, 2022 · first reported August 15, 2022 · EPA return-to-compliance field March 31, 2022

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
1504	May 17, 2022	Informal	State Violation/Reminder Notice
1505	May 17, 2022	Informal	State Public Notification requested
1510	June 23, 2022	Resolving	State Compliance achieved
1525	June 30, 2023	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 4770 · Combined Uranium · Radionuclides and Revised Rad Rule

Noncompliance period start July 1, 2021 · period end September 30, 2021 · first reported February 16, 2022 · EPA return-to-compliance field September 30, 2021

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
1500	November 22, 2021	Informal	State Violation/Reminder Notice
1501	November 22, 2021	Informal	State Public Notification requested
1503	March 21, 2022	Resolving	State Compliance achieved
1512	March 24, 2022	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 4769 · Gross Alpha, Excl. Radon and U · Radionuclides and Revised Rad Rule

Noncompliance period start July 1, 2021 · period end September 30, 2021 · first reported February 16, 2022 · EPA return-to-compliance field September 30, 2021

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
1497	November 22, 2021	Informal	State Violation/Reminder Notice
1498	November 22, 2021	Informal	State Public Notification requested
1503	March 21, 2022	Resolving	State Compliance achieved
1511	March 24, 2022	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 4768 · Combined Uranium · Radionuclides and Revised Rad Rule

Noncompliance period start April 1, 2021 · period end June 30, 2021 · first reported August 12, 2021 · EPA return-to-compliance field June 30, 2021

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
1493	August 9, 2021	Informal	State Violation/Reminder Notice
1494	August 9, 2021	Informal	State Public Notification requested
1503	March 21, 2022	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 4767 · Gross Alpha, Excl. Radon and U · Radionuclides and Revised Rad Rule

Noncompliance period start April 1, 2021 · period end June 30, 2021 · first reported August 12, 2021 · EPA return-to-compliance field June 30, 2021

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
1489	August 9, 2021	Informal	State Violation/Reminder Notice
1490	August 9, 2021	Informal	State Public Notification requested
1503	March 21, 2022	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 4765 · Gross Alpha, Excl. Radon and U · Radionuclides and Revised Rad Rule

Noncompliance period start July 1, 2020 · period end September 30, 2020 · first reported February 2, 2021 · EPA return-to-compliance field September 30, 2020

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
1484	November 16, 2020	Informal	State Violation/Reminder Notice
1485	November 16, 2020	Informal	State Public Notification requested
1488	January 4, 2021	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 4764 · Combined Uranium · Radionuclides and Revised Rad Rule

Noncompliance period start July 1, 2020 · period end September 30, 2020 · first reported February 2, 2021 · EPA return-to-compliance field September 30, 2020

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
1480	November 16, 2020	Informal	State Violation/Reminder Notice
1481	November 16, 2020	Informal	State Public Notification requested
1488	January 4, 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