CA1500401 · California

METTLER COUNTY WATER DISTRICT

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

Violation records shown: 16
EPA health-based flag: 14
Health-based records unresolved in this snapshot: 1
Monitoring and reporting records: 2

Counties listed by EPA · Kern 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

Among 1 resolved record with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 30 days. The interval uses the reporting periods and dates on file.

EPA health-based flag · Unaddressed by formal action
LSL InventoryViolation 9619037 · LEAD AND COPPER RULE REVISIONS · Lead and Copper Rule Revisions
Noncompliance period start October 17, 2024 · first reported April 1, 2025
No linked action row appears in the records shown.
EPA health-based flag · Archived
Maximum Contaminant Level Violation, Single SampleViolation 9619040 · Nitrate · Nitrate Rule
Noncompliance period start April 1, 2025 · period end June 30, 2025 · first reported September 19, 2025 · EPA return-to-compliance field June 30, 2025

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
9519004 September 22, 2017 Formal State Administrative/Compliance Order without penalty issued
EPA health-based flag · Archived
Maximum Contaminant Level Violation, Single SampleViolation 9619038 · Nitrate · Nitrate Rule
Noncompliance period start January 1, 2025 · period end March 31, 2025 · first reported June 3, 2025 · 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
9519004 September 22, 2017 Formal State Administrative/Compliance Order without penalty issued
Monitoring or reporting · Unaddressed by formal action
LSL ReportingViolation 9619036 · LEAD AND COPPER RULE REVISIONS · Lead and Copper Rule Revisions
Noncompliance period start October 17, 2024 · first reported April 1, 2025
No linked action row appears in the records shown.
EPA health-based flag · Archived
Maximum Contaminant Level Violation, Single SampleViolation 9619034 · Nitrate · Nitrate Rule
Noncompliance period start October 1, 2024 · period end December 31, 2024 · first reported February 24, 2025 · 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
9519004 September 22, 2017 Formal State Administrative/Compliance Order without penalty issued
EPA health-based flag · Archived
Maximum Contaminant Level Violation, Single SampleViolation 9619032 · Nitrate · Nitrate Rule
Noncompliance period start October 1, 2023 · period end December 31, 2023 · first reported February 15, 2024 · 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
9519004 September 22, 2017 Formal State Administrative/Compliance Order without penalty issued
EPA health-based flag · Archived
Maximum Contaminant Level Violation, Single SampleViolation 9619031 · Nitrate · Nitrate Rule
Noncompliance period start July 1, 2023 · period end September 30, 2023 · first reported November 15, 2023 · EPA return-to-compliance field September 30, 2023

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
9519004 September 22, 2017 Formal State Administrative/Compliance Order without penalty issued
EPA health-based flag · Archived
Maximum Contaminant Level Violation, Single SampleViolation 9619029 · Nitrate · Nitrate Rule
Noncompliance period start April 1, 2023 · period end June 30, 2023 · first reported August 16, 2023 · EPA return-to-compliance field June 30, 2023

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
9519004 September 22, 2017 Formal State Administrative/Compliance Order without penalty issued
EPA health-based flag · Archived
Maximum Contaminant Level Violation, Single SampleViolation 9619027 · Nitrate · Nitrate Rule
Noncompliance period start January 1, 2023 · period end March 31, 2023 · first reported May 16, 2023 · EPA return-to-compliance field March 31, 2023

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
9519004 September 22, 2017 Formal State Administrative/Compliance Order without penalty issued
EPA health-based flag · Archived
Maximum Contaminant Level Violation, Single SampleViolation 9619026 · Nitrate · Nitrate Rule
Noncompliance period start July 1, 2022 · period end September 30, 2022 · first reported November 17, 2022 · EPA return-to-compliance field September 30, 2022

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
9519004 September 22, 2017 Formal State Administrative/Compliance Order without penalty issued
EPA health-based flag · Archived
Maximum Contaminant Level Violation, Single SampleViolation 9619024 · Nitrate · Nitrate Rule
Noncompliance period start January 1, 2022 · period end March 31, 2022 · first reported May 16, 2022 · EPA return-to-compliance field March 31, 2022

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
9519004 September 22, 2017 Formal State Administrative/Compliance Order without penalty issued
EPA health-based flag · Archived
Maximum Contaminant Level Violation, Single SampleViolation 9619022 · Nitrate · Nitrate Rule
Noncompliance period start October 1, 2021 · period end December 31, 2021 · first reported February 16, 2022 · EPA return-to-compliance field December 31, 2021

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
9519004 September 22, 2017 Formal State Administrative/Compliance Order without penalty issued

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 9619019 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start August 1, 2021 · period end August 31, 2021 · first reported February 16, 2022 · EPA return-to-compliance field August 31, 2021

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9519012	October 12, 2021	Formal	State Administrative/Compliance Order without penalty issued
9519014	November 21, 2022	Resolving	State Compliance achieved

EPA health-based flag · Archived
Maximum Contaminant Level Violation, Single SampleViolation 9619020 · Nitrate · Nitrate 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

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
9519004 September 22, 2017 Formal State Administrative/Compliance Order without penalty issued

EPA health-based flag · Archived

Maximum Contaminant Level Violation, Single SampleViolation 9619016 · Nitrate · Nitrate Rule

Noncompliance period start January 1, 2021 · period end March 31, 2021 · first reported June 30, 2021 · EPA return-to-compliance field March 31, 2021

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9519004	September 22, 2017	Formal	State Administrative/Compliance Order without penalty issued
9519013	October 22, 2021	Formal	State Administrative/Compliance Order with penalty issued

EPA health-based flag · Archived
Maximum Contaminant Level Violation, Single SampleViolation 9619013 · Nitrate · Nitrate Rule
Noncompliance period start July 1, 2020 · period end September 30, 2020 · first reported January 5, 2021 · EPA return-to-compliance field September 30, 2020

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
9519004 September 22, 2017 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