MA1059000 · Massachusetts

CHESTER WATER DEPT

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

Violation records shown: 37
EPA health-based flag: 4
Health-based records unresolved in this snapshot: 0
Monitoring and reporting records: 33

Counties listed by EPA · Hampden 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 32 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 91 days. The interval uses the reporting periods and dates on file.

EPA health-based flag · Archived
Maximum Contaminant Level Violation, AverageViolation 89 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts Rule
Noncompliance period start July 1, 2024 · period end September 30, 2024 · first reported September 24, 2026 · EPA return-to-compliance field September 30, 2024

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
77 January 28, 2025 Formal State Administrative/Compliance Order without penalty issued
EPA health-based flag · Archived
Treatment Technique (SWTR and GWR)Violation 87 · Long Term 2 Enhanced Surface Water Treatment Rule · Long Term 2 Enhanced Surface Water Treatment Rule
Noncompliance period start July 1, 2024 · period end July 31, 2024 · first reported March 31, 2025 · EPA return-to-compliance field July 31, 2024

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
79 July 24, 2024 Formal State Administrative/Compliance Order without penalty issued
EPA health-based flag · Archived
Maximum Contaminant Level Violation, AverageViolation 91 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts Rule
Noncompliance period start April 1, 2024 · period end June 30, 2024 · first reported September 24, 2026 · EPA return-to-compliance field June 30, 2024

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
77 January 28, 2025 Formal State Administrative/Compliance Order without penalty issued
EPA health-based flag · Archived
Maximum Contaminant Level Violation, AverageViolation 90 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts Rule
Noncompliance period start April 1, 2024 · period end June 30, 2024 · first reported September 24, 2026 · EPA return-to-compliance field June 30, 2024

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
77 January 28, 2025 Formal State Administrative/Compliance Order without penalty issued

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
77	January 28, 2025	Formal	State Administrative/Compliance Order without penalty issued

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
79	July 24, 2024	Formal	State Administrative/Compliance Order without penalty issued

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
77	January 28, 2025	Formal	State Administrative/Compliance Order without penalty issued

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
77	January 28, 2025	Formal	State Administrative/Compliance Order without penalty issued

Monitoring or reporting · Resolved

Lead Consumer NoticeViolation 83 · Lead and Copper Rule · Lead and Copper Rule

Noncompliance period start October 10, 2023 · period end November 6, 2023 · first reported December 19, 2023 · EPA return-to-compliance field November 6, 2023

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
76	November 6, 2023	Resolving	State Compliance achieved
75	November 15, 2023	Formal	State Administrative/Compliance Order without penalty issued

Monitoring or reporting · Addressed by formal action
Follow-up Or Routine LCR Tap M/RViolation 82 · Lead and Copper Rule · Lead and Copper Rule
Noncompliance period start June 1, 2023 · first reported December 19, 2023

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
75 November 15, 2023 Formal State Administrative/Compliance Order without penalty issued

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
75	November 15, 2023	Formal	State Administrative/Compliance Order without penalty issued

Monitoring or reporting · Resolved

Monitoring, RegularViolation 73 · 2,3,7,8-TCDD · Synthetic Organic Chemicals

Noncompliance period start July 1, 2019 · period end September 30, 2019 · first reported June 15, 2021 · EPA return-to-compliance field September 30, 2019

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
72	February 11, 2020	Formal	State Administrative/Compliance Order without penalty issued
73	February 28, 2020	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 72 · Simazine · Synthetic Organic Chemicals

Noncompliance period start July 1, 2019 · period end September 30, 2019 · first reported June 15, 2021 · EPA return-to-compliance field September 30, 2019

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
72	February 11, 2020	Formal	State Administrative/Compliance Order without penalty issued
73	February 28, 2020	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 71 · Picloram · Synthetic Organic Chemicals

Noncompliance period start July 1, 2019 · period end September 30, 2019 · first reported June 15, 2021 · EPA return-to-compliance field September 30, 2019

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
72	February 11, 2020	Formal	State Administrative/Compliance Order without penalty issued
73	February 28, 2020	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 70 · OXAMYL · Synthetic Organic Chemicals

Noncompliance period start July 1, 2019 · period end September 30, 2019 · first reported June 15, 2021 · EPA return-to-compliance field September 30, 2019

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
72	February 11, 2020	Formal	State Administrative/Compliance Order without penalty issued
73	February 28, 2020	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 69 · Hexachlorocyclopentadiene · Synthetic Organic Chemicals

Noncompliance period start July 1, 2019 · period end September 30, 2019 · first reported June 15, 2021 · EPA return-to-compliance field September 30, 2019

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
72	February 11, 2020	Formal	State Administrative/Compliance Order without penalty issued
73	February 28, 2020	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 68 · HEXACHLOROBENZENE · Synthetic Organic Chemicals

Noncompliance period start July 1, 2019 · period end September 30, 2019 · first reported June 15, 2021 · EPA return-to-compliance field September 30, 2019

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
72	February 11, 2020	Formal	State Administrative/Compliance Order without penalty issued
73	February 28, 2020	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 67 · Glyphosate · Synthetic Organic Chemicals

Noncompliance period start July 1, 2019 · period end September 30, 2019 · first reported June 15, 2021 · EPA return-to-compliance field September 30, 2019

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
72	February 11, 2020	Formal	State Administrative/Compliance Order without penalty issued
73	February 28, 2020	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 66 · Endothall · Synthetic Organic Chemicals

Noncompliance period start July 1, 2019 · period end September 30, 2019 · first reported June 15, 2021 · EPA return-to-compliance field September 30, 2019

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
72	February 11, 2020	Formal	State Administrative/Compliance Order without penalty issued
73	February 28, 2020	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 65 · Diquat · Synthetic Organic Chemicals

Noncompliance period start July 1, 2019 · period end September 30, 2019 · first reported June 15, 2021 · EPA return-to-compliance field September 30, 2019

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
72	February 11, 2020	Formal	State Administrative/Compliance Order without penalty issued
73	February 28, 2020	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 64 · Dinoseb · Synthetic Organic Chemicals

Noncompliance period start July 1, 2019 · period end September 30, 2019 · first reported June 15, 2021 · EPA return-to-compliance field September 30, 2019

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
72	February 11, 2020	Formal	State Administrative/Compliance Order without penalty issued
73	February 28, 2020	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 63 · Di(2-ethylhexyl) phthalate · Synthetic Organic Chemicals

Noncompliance period start July 1, 2019 · period end September 30, 2019 · first reported June 15, 2021 · EPA return-to-compliance field September 30, 2019

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
72	February 11, 2020	Formal	State Administrative/Compliance Order without penalty issued
73	February 28, 2020	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 62 · Di(2-ethylhexyl) adipate · Synthetic Organic Chemicals

Noncompliance period start July 1, 2019 · period end September 30, 2019 · first reported June 15, 2021 · EPA return-to-compliance field September 30, 2019

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
72	February 11, 2020	Formal	State Administrative/Compliance Order without penalty issued
73	February 28, 2020	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 61 · Dalapon · Synthetic Organic Chemicals

Noncompliance period start July 1, 2019 · period end September 30, 2019 · first reported June 15, 2021 · EPA return-to-compliance field September 30, 2019

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
72	February 11, 2020	Formal	State Administrative/Compliance Order without penalty issued
73	February 28, 2020	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 60 · Benzo(a)pyrene · Synthetic Organic Chemicals

Noncompliance period start July 1, 2019 · period end September 30, 2019 · first reported June 15, 2021 · EPA return-to-compliance field September 30, 2019

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
72	February 11, 2020	Formal	State Administrative/Compliance Order without penalty issued
73	February 28, 2020	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 59 · 1,2-DIBROMO-3-CHLOROPROPANE · Synthetic Organic Chemicals

Noncompliance period start July 1, 2019 · period end September 30, 2019 · first reported June 15, 2021 · EPA return-to-compliance field September 30, 2019

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
72	February 11, 2020	Formal	State Administrative/Compliance Order without penalty issued
73	February 28, 2020	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 58 · Total Polychlorinated Biphenyls (PCB) · Synthetic Organic Chemicals

Noncompliance period start July 1, 2019 · period end September 30, 2019 · first reported June 15, 2021 · EPA return-to-compliance field September 30, 2019

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
72	February 11, 2020	Formal	State Administrative/Compliance Order without penalty issued
73	February 28, 2020	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 57 · BHC-GAMMA · Synthetic Organic Chemicals

Noncompliance period start July 1, 2019 · period end September 30, 2019 · first reported June 15, 2021 · EPA return-to-compliance field September 30, 2019

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
72	February 11, 2020	Formal	State Administrative/Compliance Order without penalty issued
73	February 28, 2020	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 56 · Methoxychlor · Synthetic Organic Chemicals

Noncompliance period start July 1, 2019 · period end September 30, 2019 · first reported June 15, 2021 · EPA return-to-compliance field September 30, 2019

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
72	February 11, 2020	Formal	State Administrative/Compliance Order without penalty issued
73	February 28, 2020	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 55 · 2,4,5-TP · Synthetic Organic Chemicals

Noncompliance period start July 1, 2019 · period end September 30, 2019 · first reported June 15, 2021 · EPA return-to-compliance field September 30, 2019

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
72	February 11, 2020	Formal	State Administrative/Compliance Order without penalty issued
73	February 28, 2020	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 54 · Toxaphene · Synthetic Organic Chemicals

Noncompliance period start July 1, 2019 · period end September 30, 2019 · first reported June 15, 2021 · EPA return-to-compliance field September 30, 2019

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
72	February 11, 2020	Formal	State Administrative/Compliance Order without penalty issued
73	February 28, 2020	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 53 · Pentachlorophenol · Synthetic Organic Chemicals

Noncompliance period start July 1, 2019 · period end September 30, 2019 · first reported June 15, 2021 · EPA return-to-compliance field September 30, 2019

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
72	February 11, 2020	Formal	State Administrative/Compliance Order without penalty issued
73	February 28, 2020	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 52 · Heptachlor · Synthetic Organic Chemicals

Noncompliance period start July 1, 2019 · period end September 30, 2019 · first reported June 15, 2021 · EPA return-to-compliance field September 30, 2019

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
72	February 11, 2020	Formal	State Administrative/Compliance Order without penalty issued
73	February 28, 2020	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 51 · Heptachlor epoxide · Synthetic Organic Chemicals

Noncompliance period start July 1, 2019 · period end September 30, 2019 · first reported June 15, 2021 · EPA return-to-compliance field September 30, 2019

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
72	February 11, 2020	Formal	State Administrative/Compliance Order without penalty issued
73	February 28, 2020	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 50 · ETHYLENE DIBROMIDE · Synthetic Organic Chemicals

Noncompliance period start July 1, 2019 · period end September 30, 2019 · first reported June 15, 2021 · EPA return-to-compliance field September 30, 2019

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
72	February 11, 2020	Formal	State Administrative/Compliance Order without penalty issued
73	February 28, 2020	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 49 · Endrin · Synthetic Organic Chemicals

Noncompliance period start July 1, 2019 · period end September 30, 2019 · first reported June 15, 2021 · EPA return-to-compliance field September 30, 2019

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
72	February 11, 2020	Formal	State Administrative/Compliance Order without penalty issued
73	February 28, 2020	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 48 · 2,4-D · Synthetic Organic Chemicals

Noncompliance period start July 1, 2019 · period end September 30, 2019 · first reported June 15, 2021 · EPA return-to-compliance field September 30, 2019

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
72	February 11, 2020	Formal	State Administrative/Compliance Order without penalty issued
73	February 28, 2020	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 47 · Chlordane · Synthetic Organic Chemicals

Noncompliance period start July 1, 2019 · period end September 30, 2019 · first reported June 15, 2021 · EPA return-to-compliance field September 30, 2019

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
72	February 11, 2020	Formal	State Administrative/Compliance Order without penalty issued
73	February 28, 2020	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 46 · Carbofuran · Synthetic Organic Chemicals

Noncompliance period start July 1, 2019 · period end September 30, 2019 · first reported June 15, 2021 · EPA return-to-compliance field September 30, 2019

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
72	February 11, 2020	Formal	State Administrative/Compliance Order without penalty issued
73	February 28, 2020	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 45 · Atrazine · Synthetic Organic Chemicals

Noncompliance period start July 1, 2019 · period end September 30, 2019 · first reported June 15, 2021 · EPA return-to-compliance field September 30, 2019

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
72	February 11, 2020	Formal	State Administrative/Compliance Order without penalty issued
73	February 28, 2020	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 44 · LASSO · Synthetic Organic Chemicals

Noncompliance period start July 1, 2019 · period end September 30, 2019 · first reported June 15, 2021 · EPA return-to-compliance field September 30, 2019

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
72	February 11, 2020	Formal	State Administrative/Compliance Order without penalty issued
73	February 28, 2020	Resolving	State Compliance achieved

Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 88 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts Rule
Noncompliance period start July 1, 2018 · period end September 30, 2018 · first reported June 16, 2025 · EPA return-to-compliance field September 30, 2018

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
80 March 9, 2020 Resolving State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
80	March 9, 2020	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