CA3600306 · California
THUNDERBIRD CWD
Federal fiscal 2026Q3 · EPA violation and follow-up records
- Violation records shown
- 2
- EPA health-based flag
- 1
- Health-based records unresolved in this snapshot
- 0
- Monitoring and reporting records
- 1
Counties listed by EPA · San Bernardino 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 347 days. The interval uses the reporting periods and dates on file.
EPA health-based flag · Archived
Maximum Contaminant Level Violation, Single SampleViolation 9713007 · Nitrate · Nitrate RuleNoncompliance period start January 1, 2025 · period end December 31, 2025 · first reported November 17, 2025 · EPA return-to-compliance field December 31, 2025
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 1213525 August 28, 2025 Formal State Administrative/Compliance Order without penalty issued Monitoring or reporting · Resolved
Follow-up Or Routine LCR Tap M/RViolation 9713006 · Lead and Copper Rule · Lead and Copper RuleNoncompliance period start January 18, 2024 · period end December 30, 2024 · first reported February 15, 2024 · EPA return-to-compliance field December 30, 2024
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 1213524 January 18, 2024 Formal State Administrative/Compliance Order without penalty issued 1213526 December 30, 2024 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