CA3600071 · California

CHAMISAL MWC

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

Violation records shown: 17
EPA health-based flag: 1
Health-based records unresolved in this snapshot: 1
Monitoring and reporting records: 12

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 13 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 357 days. The interval uses the reporting periods and dates on file.

EPA health-based flag · Unaddressed by formal action
LSL InventoryViolation 25 · 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.

Other or unclassified · Resolved

Consumer Confidence Report Complete Failure to ReportViolation 27 · Consumer Confidence Rule · Consumer Confidence Rule

Noncompliance period start July 1, 2025 · period end June 23, 2026 · first reported March 20, 2026 · EPA return-to-compliance field June 23, 2026

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
34	October 22, 2025	Formal	State Administrative/Compliance Order without penalty issued
35	June 23, 2026	Resolving	State Compliance achieved

Monitoring or reporting · Unaddressed by formal action
LSL ReportingViolation 26 · 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.

Other or unclassified · Resolved

Consumer Confidence Report Complete Failure to ReportViolation 22 · Consumer Confidence Rule · Consumer Confidence Rule

Noncompliance period start July 1, 2023 · period end August 8, 2024 · first reported February 15, 2024 · EPA return-to-compliance field August 8, 2024

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
24	February 22, 2024	Formal	State Administrative/Compliance Order without penalty issued
29	August 8, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 21 · Nitrate · Nitrate Rule

Noncompliance period start January 1, 2023 · period end December 31, 2023 · first reported February 15, 2024 · EPA return-to-compliance field December 31, 2023

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
26	February 22, 2024	Formal	State Administrative/Compliance Order without penalty issued
31	May 20, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 19 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start January 1, 2023 · period end January 31, 2023 · first reported May 16, 2023 · EPA return-to-compliance field January 31, 2023

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
20	April 10, 2023	Formal	State Administrative/Compliance Order without penalty issued
22	July 6, 2023	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 15 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start December 1, 2022 · period end December 31, 2022 · first reported February 16, 2023 · EPA return-to-compliance field December 31, 2022

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
17	January 31, 2023	Formal	State Administrative/Compliance Order without penalty issued
23	July 6, 2023	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 14 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start November 1, 2022 · period end November 30, 2022 · first reported February 16, 2023 · EPA return-to-compliance field November 30, 2022

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
16	January 31, 2023	Formal	State Administrative/Compliance Order without penalty issued
23	July 6, 2023	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 12 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start October 1, 2022 · period end October 31, 2022 · first reported February 16, 2023 · EPA return-to-compliance field October 31, 2022

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
14	January 31, 2023	Formal	State Administrative/Compliance Order without penalty issued
23	July 6, 2023	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 10 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start September 1, 2022 · period end September 30, 2022 · first reported November 17, 2022 · EPA return-to-compliance field September 30, 2022

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
12	October 26, 2022	Formal	State Administrative/Compliance Order without penalty issued
23	July 6, 2023	Resolving	State Compliance achieved

Other or unclassified · Resolved

Consumer Confidence Report Complete Failure to ReportViolation 11 · Consumer Confidence Rule · Consumer Confidence Rule

Noncompliance period start July 1, 2022 · period end August 8, 2024 · first reported November 17, 2022 · EPA return-to-compliance field August 8, 2024

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
13	October 27, 2022	Formal	State Administrative/Compliance Order without penalty issued
29	August 8, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Archived
Monitoring and Reporting (DBP)Violation 18 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts Rule
Noncompliance period start January 1, 2022 · period end December 31, 2022 · first reported May 16, 2023 · EPA return-to-compliance field December 31, 2022

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
19 February 28, 2023 Formal State Administrative/Compliance Order without penalty issued
Monitoring or reporting · Archived
Monitoring and Reporting (DBP)Violation 17 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts Rule
Noncompliance period start January 1, 2022 · period end December 31, 2022 · first reported May 16, 2023 · EPA return-to-compliance field December 31, 2022

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
19 February 28, 2023 Formal State Administrative/Compliance Order without penalty issued

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
19	February 28, 2023	Formal	State Administrative/Compliance Order without penalty issued

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
19	February 28, 2023	Formal	State Administrative/Compliance Order without penalty issued

Monitoring or reporting · Resolved

Monitoring, RegularViolation 16 · Nitrate · Nitrate Rule

Noncompliance period start January 1, 2022 · period end December 31, 2022 · first reported February 16, 2023 · EPA return-to-compliance field December 31, 2022

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
18	February 23, 2023	Formal	State Administrative/Compliance Order without penalty issued
31	May 20, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 9 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start September 1, 2021 · period end September 30, 2021 · first reported February 16, 2022 · EPA return-to-compliance field September 30, 2021

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
27	April 25, 2024	Formal	State Administrative/Compliance Order without penalty issued
28	April 25, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 20 · Nitrite · Nitrate Rule

Noncompliance period start January 1, 2021 · period end December 31, 2023 · first reported February 15, 2024 · EPA return-to-compliance field December 31, 2023

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
25	February 22, 2024	Formal	State Administrative/Compliance Order without penalty issued
31	May 20, 2025	Resolving	State Compliance achieved

Other or unclassified · Resolved

Consumer Confidence Report Complete Failure to ReportViolation 8 · Consumer Confidence Rule · Consumer Confidence Rule

Noncompliance period start July 1, 2020 · period end June 29, 2021 · first reported November 13, 2020 · EPA return-to-compliance field June 29, 2021

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
8	October 30, 2020	Formal	State Administrative/Compliance Order without penalty issued
11	June 29, 2021	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