CA2700534 · California

COLONIAL OAK WC INC

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: 0
Monitoring and reporting records: 1

Counties listed by EPA · Monterey 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

Monitoring or reporting · Unaddressed by formal action
Notification, Known or Potential LSLViolation 1600031 · LEAD AND COPPER RULE REVISIONS · Lead and Copper Rule Revisions
Noncompliance period start July 2, 2025 · first reported November 17, 2025
No linked action row appears in the records shown.

EPA health-based flag · Archived

Maximum Contaminant Level Violation, Single SampleViolation 1600029 · Nitrate · Nitrate Rule

Noncompliance period start January 1, 2024 · period end March 31, 2024 · first reported October 2, 2024 · EPA return-to-compliance field March 31, 2024

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
1506194	September 8, 2023	Formal	State Administrative/Compliance Order without penalty issued
1506195	September 8, 2023	Informal	State Public Notification requested

EPA health-based flag · Archived

Maximum Contaminant Level Violation, Single SampleViolation 1600030 · Nitrate · Nitrate Rule

Noncompliance period start July 1, 2023 · period end September 30, 2023 · first reported October 2, 2024 · EPA return-to-compliance field September 30, 2023

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
1506194	September 8, 2023	Formal	State Administrative/Compliance Order without penalty issued
1506195	September 8, 2023	Informal	State Public Notification requested

EPA health-based flag · Archived

Maximum Contaminant Level Violation, Single SampleViolation 1600028 · Nitrate · Nitrate Rule

Noncompliance period start April 1, 2023 · period end June 30, 2023 · first reported October 2, 2023 · EPA return-to-compliance field June 30, 2023

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
1506194	September 8, 2023	Formal	State Administrative/Compliance Order without penalty issued
1506195	September 8, 2023	Informal	State Public Notification requested

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