CA2410012 · California

HILMAR COUNTY WATER DISTRICT

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

Violation records shown: 14
EPA health-based flag: 14
Health-based records unresolved in this snapshot: 0
Monitoring and reporting records: 0

Counties listed by EPA · Merced County, California

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

Violations and what followed

EPA health-based flag · Archived
Maximum Contaminant Level Violation, Single SampleViolation 811019 · Nitrate · Nitrate Rule
Noncompliance period start November 1, 2025 · period end November 30, 2025 · first reported March 20, 2026 · EPA return-to-compliance field November 30, 2025

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
9711010 October 2, 2024 Formal State Administrative/Compliance Order without penalty issued
EPA health-based flag · Archived
Maximum Contaminant Level Violation, Single SampleViolation 811018 · Nitrate · Nitrate Rule
Noncompliance period start October 1, 2025 · period end October 31, 2025 · first reported March 20, 2026 · EPA return-to-compliance field October 31, 2025

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
9711010 October 2, 2024 Formal State Administrative/Compliance Order without penalty issued
EPA health-based flag · Archived
Maximum Contaminant Level Violation, Single SampleViolation 811015 · Nitrate · Nitrate Rule
Noncompliance period start July 1, 2025 · period end July 31, 2025 · first reported March 20, 2026 · EPA return-to-compliance field July 31, 2025

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
9711010 October 2, 2024 Formal State Administrative/Compliance Order without penalty issued
EPA health-based flag · Archived
Maximum Contaminant Level Violation, Single SampleViolation 811014 · Nitrate · Nitrate Rule
Noncompliance period start March 1, 2025 · period end March 31, 2025 · first reported March 20, 2026 · EPA return-to-compliance field March 31, 2025

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
9711010 October 2, 2024 Formal State Administrative/Compliance Order without penalty issued
EPA health-based flag · Archived
Maximum Contaminant Level Violation, Single SampleViolation 811013 · Nitrate · Nitrate Rule
Noncompliance period start February 1, 2025 · period end February 28, 2025 · first reported March 20, 2026 · EPA return-to-compliance field February 28, 2025

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
9711010 October 2, 2024 Formal State Administrative/Compliance Order without penalty issued
EPA health-based flag · Archived
Maximum Contaminant Level Violation, Single SampleViolation 811012 · Nitrate · Nitrate Rule
Noncompliance period start January 1, 2025 · period end January 31, 2025 · first reported March 20, 2026 · EPA return-to-compliance field January 31, 2025

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
9711010 October 2, 2024 Formal State Administrative/Compliance Order without penalty issued
EPA health-based flag · Archived
Maximum Contaminant Level Violation, Single SampleViolation 811011 · Nitrate · Nitrate Rule
Noncompliance period start December 1, 2024 · period end December 31, 2024 · first reported March 20, 2026 · EPA return-to-compliance field December 31, 2024

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
9711010 October 2, 2024 Formal State Administrative/Compliance Order without penalty issued
EPA health-based flag · Archived
Maximum Contaminant Level Violation, Single SampleViolation 811010 · Nitrate · Nitrate Rule
Noncompliance period start July 1, 2024 · period end July 31, 2024 · first reported March 20, 2026 · EPA return-to-compliance field July 31, 2024

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
9711010 October 2, 2024 Formal State Administrative/Compliance Order without penalty issued
EPA health-based flag · Archived
Maximum Contaminant Level Violation, Single SampleViolation 811009 · Nitrate · Nitrate Rule
Noncompliance period start May 1, 2024 · period end May 31, 2024 · first reported March 20, 2026 · EPA return-to-compliance field May 31, 2024

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
9711010 October 2, 2024 Formal State Administrative/Compliance Order without penalty issued
EPA health-based flag · Archived
Maximum Contaminant Level Violation, Single SampleViolation 811008 · Nitrate · Nitrate Rule
Noncompliance period start April 1, 2024 · period end April 30, 2024 · first reported March 20, 2026 · EPA return-to-compliance field April 30, 2024

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
9711010 October 2, 2024 Formal State Administrative/Compliance Order without penalty issued
EPA health-based flag · Archived
Maximum Contaminant Level Violation, Single SampleViolation 811007 · Nitrate · Nitrate Rule
Noncompliance period start March 1, 2024 · period end March 31, 2024 · first reported March 20, 2026 · EPA return-to-compliance field March 31, 2024

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
9711010 October 2, 2024 Formal State Administrative/Compliance Order without penalty issued
EPA health-based flag · Archived
Maximum Contaminant Level Violation, Single SampleViolation 811006 · Nitrate · Nitrate Rule
Noncompliance period start February 1, 2024 · period end February 29, 2024 · first reported March 20, 2026 · EPA return-to-compliance field February 29, 2024

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
9711010 October 2, 2024 Formal State Administrative/Compliance Order without penalty issued
EPA health-based flag · Archived
Maximum Contaminant Level Violation, Single SampleViolation 811005 · Nitrate · Nitrate Rule
Noncompliance period start January 1, 2024 · period end January 31, 2024 · first reported March 20, 2026 · EPA return-to-compliance field January 31, 2024

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
9711010 October 2, 2024 Formal State Administrative/Compliance Order without penalty issued
EPA health-based flag · Archived
Maximum Contaminant Level Violation, Single SampleViolation 811004 · Nitrate · Nitrate Rule
Noncompliance period start January 1, 2023 · period end December 31, 2023 · first reported March 20, 2026 · EPA return-to-compliance field December 31, 2023

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
9711010 October 2, 2024 Formal State Administrative/Compliance Order without penalty issued

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9711010	October 2, 2024	Formal	State Administrative/Compliance Order without penalty issued

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9711010	October 2, 2024	Formal	State Administrative/Compliance Order without penalty issued

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9711010	October 2, 2024	Formal	State Administrative/Compliance Order without penalty issued

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9711010	October 2, 2024	Formal	State Administrative/Compliance Order without penalty issued

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9711010	October 2, 2024	Formal	State Administrative/Compliance Order without penalty issued

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9711010	October 2, 2024	Formal	State Administrative/Compliance Order without penalty issued

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9711010	October 2, 2024	Formal	State Administrative/Compliance Order without penalty issued

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9711010	October 2, 2024	Formal	State Administrative/Compliance Order without penalty issued

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9711010	October 2, 2024	Formal	State Administrative/Compliance Order without penalty issued

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9711010	October 2, 2024	Formal	State Administrative/Compliance Order without penalty issued

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9711010	October 2, 2024	Formal	State Administrative/Compliance Order without penalty issued

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9711010	October 2, 2024	Formal	State Administrative/Compliance Order without penalty issued

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9711010	October 2, 2024	Formal	State Administrative/Compliance Order without penalty issued

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9711010	October 2, 2024	Formal	State Administrative/Compliance Order without penalty issued

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