CA2810004 · California
ST. HELENA, CITY OF
Federal fiscal 2026Q3 · EPA violation and follow-up records
- Violation records shown
- 9
- EPA health-based flag
- 8
- Health-based records unresolved in this snapshot
- 0
- Monitoring and reporting records
- 1
Counties listed by EPA · Napa 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 29 days. The interval uses the reporting periods and dates on file.
EPA health-based flag · Archived
Maximum Contaminant Level Violation, AverageViolation 9503017 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start July 1, 2023 · period end September 30, 2023 · first reported February 15, 2024 · 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 9503014 March 23, 2021 Formal State Administrative/Compliance Order without penalty issued EPA health-based flag · Archived
Maximum Contaminant Level Violation, AverageViolation 9503016 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start April 1, 2023 · period end June 30, 2023 · first reported February 15, 2024 · 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 9503014 March 23, 2021 Formal State Administrative/Compliance Order without penalty issued EPA health-based flag · Archived
Maximum Contaminant Level Violation, AverageViolation 9503015 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start January 1, 2023 · period end March 31, 2023 · first reported February 15, 2024 · 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 9503014 March 23, 2021 Formal State Administrative/Compliance Order without penalty issued Monitoring or reporting · Unaddressed by formal action
Follow-up Or Routine LCR Tap M/RViolation 9503018 · Lead and Copper Rule · Lead and Copper RuleNoncompliance period start October 1, 2022 · first reported May 15, 2024
No linked action row appears in the records shown.EPA health-based flag · Archived
Maximum Contaminant Level Violation, AverageViolation 9503011 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start January 1, 2021 · period end March 31, 2021 · first reported February 15, 2024 · EPA return-to-compliance field March 31, 2021
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9503014 March 23, 2021 Formal State Administrative/Compliance Order without penalty issued EPA health-based flag · Archived
Maximum Contaminant Level Violation, AverageViolation 9503010 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start January 1, 2021 · period end March 31, 2021 · first reported May 14, 2021 · EPA return-to-compliance field March 31, 2021
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9503014 March 23, 2021 Formal State Administrative/Compliance Order without penalty issued EPA health-based flag · Archived
Maximum Contaminant Level Violation, AverageViolation 9503009 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start January 1, 2021 · period end March 31, 2021 · first reported May 14, 2021 · EPA return-to-compliance field March 31, 2021
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9503014 March 23, 2021 Formal State Administrative/Compliance Order without penalty issued EPA health-based flag · Resolved
Treatment Technique (SWTR and GWR)Violation 9503007 · Surface Water Treatment Rule · Surface Water Treatment RuleNoncompliance period start November 1, 2020 · period end November 30, 2020 · first reported January 5, 2021 · EPA return-to-compliance field November 30, 2020
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9503012 December 10, 2020 Formal State Administrative/Compliance Order without penalty issued 9503013 December 10, 2020 Resolving State Compliance achieved EPA health-based flag · Archived
Maximum Contaminant Level Violation, AverageViolation 9503008 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start October 1, 2020 · period end December 31, 2020 · first reported March 31, 2021 · EPA return-to-compliance field December 31, 2020
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9503014 March 23, 2021 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