CA4700513 · California
HORNBROOK C.S.D.
Federal fiscal 2026Q3 · EPA violation and follow-up records
- Violation records shown
- 4
- EPA health-based flag
- 3
- Health-based records unresolved in this snapshot
- 1
- Monitoring and reporting records
- 1
Counties listed by EPA · Siskiyou 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 2 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 315 days. The interval uses the reporting periods and dates on file.
EPA health-based flag · Addressed by formal action
LSL InventoryViolation 9701016 · LEAD AND COPPER RULE REVISIONS · Lead and Copper Rule RevisionsNoncompliance period start October 17, 2024 · first reported April 1, 2025
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9999900000000000001 March 5, 2026 Formal Federal Final Administrative Order issued EPA health-based flag · Resolved
Treatment Technique No Certif. OperatorViolation 9701018 · Stage 1 Disinfectants and Disinfection Byproducts Rule · Stage 1 Disinfectants and Disinfection Byproducts RuleNoncompliance period start December 31, 2024 · period end May 14, 2025 · first reported March 20, 2026 · EPA return-to-compliance field May 14, 2025
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9801025 May 14, 2025 Resolving State Compliance achieved 9801024 October 6, 2025 Formal State Administrative/Compliance Order without penalty issued Monitoring or reporting · Addressed by formal action
LSL ReportingViolation 9701017 · LEAD AND COPPER RULE REVISIONS · Lead and Copper Rule RevisionsNoncompliance period start October 17, 2024 · first reported April 1, 2025
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9999900000000000001 March 5, 2026 Formal Federal Final Administrative Order issued EPA health-based flag · Resolved
Treatment Technique No Certif. OperatorViolation 9701015 · Stage 1 Disinfectants and Disinfection Byproducts Rule · Stage 1 Disinfectants and Disinfection Byproducts RuleNoncompliance period start May 28, 2024 · period end October 6, 2025 · first reported February 24, 2025 · EPA return-to-compliance field October 6, 2025
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9801023 May 28, 2024 Formal State Administrative/Compliance Order without penalty issued 9801026 October 6, 2025 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