MA4310003 · Massachusetts

ONSET FIRE DISTRICTWATER DEPT.

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

Violation records shown: 25
EPA health-based flag: 0
Health-based records unresolved in this snapshot: 0
Monitoring and reporting records: 24

Counties listed by EPA · Plymouth County, Massachusetts

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 290 days. The interval uses the reporting periods and dates on file.

Other or unclassified · Resolved

Consumer Confidence Report Complete Failure to ReportViolation 38 · Consumer Confidence Rule · Consumer Confidence Rule

Noncompliance period start July 1, 2022 · period end August 15, 2022 · first reported September 15, 2022 · EPA return-to-compliance field August 15, 2022

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
34	August 15, 2022	Resolving	State Compliance achieved
33	August 16, 2022	Formal	State Administrative/Compliance Order without penalty issued

Monitoring or reporting · Archived
Monitoring, RegularViolation 37 · 1,2-DIBROMO-3-CHLOROPROPANE · Synthetic Organic Chemicals
Noncompliance period start October 1, 2020 · period end December 31, 2020 · first reported June 15, 2021 · EPA return-to-compliance field December 31, 2020
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 36 · ETHYLENE DIBROMIDE · Synthetic Organic Chemicals
Noncompliance period start October 1, 2020 · period end December 31, 2020 · first reported June 15, 2021 · EPA return-to-compliance field December 31, 2020
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 35 · 1,2,4-Trichlorobenzene · Volatile Organic Chemicals
Noncompliance period start October 1, 2020 · period end December 31, 2020 · first reported June 15, 2021 · EPA return-to-compliance field December 31, 2020
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 33 · 1,1,2-Trichloroethane · Volatile Organic Chemicals
Noncompliance period start October 1, 2020 · period end December 31, 2020 · first reported June 15, 2021 · EPA return-to-compliance field December 31, 2020
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 31 · DICHLOROMETHANE · Volatile Organic Chemicals
Noncompliance period start October 1, 2020 · period end December 31, 2020 · first reported June 15, 2021 · EPA return-to-compliance field December 31, 2020
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 30 · Xylenes, Total · Volatile Organic Chemicals
Noncompliance period start October 1, 2020 · period end December 31, 2020 · first reported June 15, 2021 · EPA return-to-compliance field December 31, 2020
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 29 · p-Dichlorobenzene · Volatile Organic Chemicals
Noncompliance period start October 1, 2020 · period end December 31, 2020 · first reported June 15, 2021 · EPA return-to-compliance field December 31, 2020
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 28 · Toluene · Volatile Organic Chemicals
Noncompliance period start October 1, 2020 · period end December 31, 2020 · first reported June 15, 2021 · EPA return-to-compliance field December 31, 2020
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 27 · Tetrachloroethylene · Volatile Organic Chemicals
Noncompliance period start October 1, 2020 · period end December 31, 2020 · first reported June 15, 2021 · EPA return-to-compliance field December 31, 2020
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 26 · Styrene · Volatile Organic Chemicals
Noncompliance period start October 1, 2020 · period end December 31, 2020 · first reported June 15, 2021 · EPA return-to-compliance field December 31, 2020
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 25 · Ethylbenzene · Volatile Organic Chemicals
Noncompliance period start October 1, 2020 · period end December 31, 2020 · first reported June 15, 2021 · EPA return-to-compliance field December 31, 2020
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 24 · 1,2-Dichloropropane · Volatile Organic Chemicals
Noncompliance period start October 1, 2020 · period end December 31, 2020 · first reported June 15, 2021 · EPA return-to-compliance field December 31, 2020
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 23 · cis-1,2-Dichloroethylene · Volatile Organic Chemicals
Noncompliance period start October 1, 2020 · period end December 31, 2020 · first reported June 15, 2021 · EPA return-to-compliance field December 31, 2020
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 22 · trans-1,2-Dichloroethylene · Volatile Organic Chemicals
Noncompliance period start October 1, 2020 · period end December 31, 2020 · first reported June 15, 2021 · EPA return-to-compliance field December 31, 2020
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 21 · o-Dichlorobenzene · Volatile Organic Chemicals
Noncompliance period start October 1, 2020 · period end December 31, 2020 · first reported June 15, 2021 · EPA return-to-compliance field December 31, 2020
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 20 · CHLOROBENZENE · Volatile Organic Chemicals
Noncompliance period start October 1, 2020 · period end December 31, 2020 · first reported June 15, 2021 · EPA return-to-compliance field December 31, 2020
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 19 · Vinyl chloride · Volatile Organic Chemicals
Noncompliance period start October 1, 2020 · period end December 31, 2020 · first reported June 15, 2021 · EPA return-to-compliance field December 31, 2020
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 18 · 1,1,1-Trichloroethane · Volatile Organic Chemicals
Noncompliance period start October 1, 2020 · period end December 31, 2020 · first reported June 15, 2021 · EPA return-to-compliance field December 31, 2020
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 17 · Trichloroethylene · Volatile Organic Chemicals
Noncompliance period start October 1, 2020 · period end December 31, 2020 · first reported June 15, 2021 · EPA return-to-compliance field December 31, 2020
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 16 · 1,2-Dichloroethane · Volatile Organic Chemicals
Noncompliance period start October 1, 2020 · period end December 31, 2020 · first reported June 15, 2021 · EPA return-to-compliance field December 31, 2020
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 15 · 1,1-Dichloroethylene · Volatile Organic Chemicals
Noncompliance period start October 1, 2020 · period end December 31, 2020 · first reported June 15, 2021 · EPA return-to-compliance field December 31, 2020
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 14 · Carbon tetrachloride · Volatile Organic Chemicals
Noncompliance period start October 1, 2020 · period end December 31, 2020 · first reported June 15, 2021 · EPA return-to-compliance field December 31, 2020
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 13 · Benzene · Volatile Organic Chemicals
Noncompliance period start October 1, 2020 · period end December 31, 2020 · first reported June 15, 2021 · EPA return-to-compliance field December 31, 2020
No linked action row appears in the records shown.

Monitoring or reporting · Resolved

Follow-up Or Routine LCR Tap M/RViolation 12 · Lead and Copper Rule · Lead and Copper Rule

Noncompliance period start October 1, 2019 · period end March 19, 2021 · first reported December 18, 2019 · EPA return-to-compliance field March 19, 2021

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
30	November 22, 2019	Formal	State Administrative/Compliance Order without penalty issued
32	March 19, 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