MA2136000 · Massachusetts

HOLLISTON WATER DEPARTMENT

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

Violation records shown: 64
EPA health-based flag: 0
Health-based records unresolved in this snapshot: 0
Monitoring and reporting records: 64

Counties listed by EPA · Middlesex 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.

Monitoring or reporting · Addressed by formal action
Follow-up Or Routine LCR Tap M/RViolation 127 · Lead and Copper Rule · Lead and Copper Rule
Noncompliance period start October 1, 2024 · first reported September 17, 2025

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
66 September 2, 2025 Formal State Administrative/Compliance Order without penalty issued

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
66	September 2, 2025	Formal	State Administrative/Compliance Order without penalty issued

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 126 · CARBON, TOTAL · Stage 1 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start April 1, 2023 · period end June 30, 2023 · first reported September 24, 2026 · 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
63	February 29, 2024	Formal	State Administrative/Compliance Order without penalty issued
64	February 29, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Addressed by formal action
Lead Consumer NoticeViolation 121 · Lead and Copper Rule · Lead and Copper Rule
Noncompliance period start April 1, 2023 · first reported September 18, 2023

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
61 July 20, 2023 Formal State Administrative/Compliance Order without penalty issued

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
61	July 20, 2023	Formal	State Administrative/Compliance Order without penalty issued

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 125 · CARBON, TOTAL · Stage 1 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start January 1, 2023 · period end March 31, 2023 · first reported September 24, 2026 · EPA return-to-compliance field March 31, 2023

2 linked actions

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

Monitoring or reporting · Archived
Monitoring, RegularViolation 99 · Benzo(a)pyrene · Synthetic Organic Chemicals
Noncompliance period start October 1, 2022 · period end December 31, 2022 · first reported September 18, 2023 · EPA return-to-compliance field December 31, 2022
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 98 · 1,2-DIBROMO-3-CHLOROPROPANE · Synthetic Organic Chemicals
Noncompliance period start October 1, 2022 · period end December 31, 2022 · first reported September 18, 2023 · EPA return-to-compliance field December 31, 2022
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 97 · Total Polychlorinated Biphenyls (PCB) · Synthetic Organic Chemicals
Noncompliance period start October 1, 2022 · period end December 31, 2022 · first reported September 18, 2023 · EPA return-to-compliance field December 31, 2022
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 96 · BHC-GAMMA · Synthetic Organic Chemicals
Noncompliance period start October 1, 2022 · period end December 31, 2022 · first reported September 18, 2023 · EPA return-to-compliance field December 31, 2022
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 95 · Methoxychlor · Synthetic Organic Chemicals
Noncompliance period start October 1, 2022 · period end December 31, 2022 · first reported September 18, 2023 · EPA return-to-compliance field December 31, 2022
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 94 · 2,4,5-TP · Synthetic Organic Chemicals
Noncompliance period start October 1, 2022 · period end December 31, 2022 · first reported September 18, 2023 · EPA return-to-compliance field December 31, 2022
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 93 · Toxaphene · Synthetic Organic Chemicals
Noncompliance period start October 1, 2022 · period end December 31, 2022 · first reported September 18, 2023 · EPA return-to-compliance field December 31, 2022
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 92 · Pentachlorophenol · Synthetic Organic Chemicals
Noncompliance period start October 1, 2022 · period end December 31, 2022 · first reported September 18, 2023 · EPA return-to-compliance field December 31, 2022
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 91 · Heptachlor · Synthetic Organic Chemicals
Noncompliance period start October 1, 2022 · period end December 31, 2022 · first reported September 18, 2023 · EPA return-to-compliance field December 31, 2022
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 90 · Heptachlor epoxide · Synthetic Organic Chemicals
Noncompliance period start October 1, 2022 · period end December 31, 2022 · first reported September 18, 2023 · EPA return-to-compliance field December 31, 2022
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 89 · ETHYLENE DIBROMIDE · Synthetic Organic Chemicals
Noncompliance period start October 1, 2022 · period end December 31, 2022 · first reported September 18, 2023 · EPA return-to-compliance field December 31, 2022
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 88 · Endrin · Synthetic Organic Chemicals
Noncompliance period start October 1, 2022 · period end December 31, 2022 · first reported September 18, 2023 · EPA return-to-compliance field December 31, 2022
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 87 · 2,4-D · Synthetic Organic Chemicals
Noncompliance period start October 1, 2022 · period end December 31, 2022 · first reported September 18, 2023 · EPA return-to-compliance field December 31, 2022
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 86 · Chlordane · Synthetic Organic Chemicals
Noncompliance period start October 1, 2022 · period end December 31, 2022 · first reported September 18, 2023 · EPA return-to-compliance field December 31, 2022
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 85 · Carbofuran · Synthetic Organic Chemicals
Noncompliance period start October 1, 2022 · period end December 31, 2022 · first reported September 18, 2023 · EPA return-to-compliance field December 31, 2022
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 84 · Atrazine · Synthetic Organic Chemicals
Noncompliance period start October 1, 2022 · period end December 31, 2022 · first reported September 18, 2023 · EPA return-to-compliance field December 31, 2022
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 83 · LASSO · Synthetic Organic Chemicals
Noncompliance period start October 1, 2022 · period end December 31, 2022 · first reported September 18, 2023 · EPA return-to-compliance field December 31, 2022
No linked action row appears in the records shown.

Monitoring or reporting · Resolved

Monitoring, RegularViolation 157 · 2,3,7,8-TCDD · Synthetic Organic Chemicals

Noncompliance period start October 1, 2022 · period end December 31, 2022 · first reported September 24, 2026 · 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
60	June 28, 2023	Formal	State Administrative/Compliance Order without penalty issued
62	August 29, 2023	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 156 · Simazine · Synthetic Organic Chemicals

Noncompliance period start October 1, 2022 · period end December 31, 2022 · first reported September 24, 2026 · 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
60	June 28, 2023	Formal	State Administrative/Compliance Order without penalty issued
62	August 29, 2023	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 155 · Picloram · Synthetic Organic Chemicals

Noncompliance period start October 1, 2022 · period end December 31, 2022 · first reported September 24, 2026 · 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
60	June 28, 2023	Formal	State Administrative/Compliance Order without penalty issued
62	August 29, 2023	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 154 · OXAMYL · Synthetic Organic Chemicals

Noncompliance period start October 1, 2022 · period end December 31, 2022 · first reported September 24, 2026 · 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
60	June 28, 2023	Formal	State Administrative/Compliance Order without penalty issued
62	August 29, 2023	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 153 · Hexachlorocyclopentadiene · Synthetic Organic Chemicals

Noncompliance period start October 1, 2022 · period end December 31, 2022 · first reported September 24, 2026 · 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
60	June 28, 2023	Formal	State Administrative/Compliance Order without penalty issued
62	August 29, 2023	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 152 · HEXACHLOROBENZENE · Synthetic Organic Chemicals

Noncompliance period start October 1, 2022 · period end December 31, 2022 · first reported September 24, 2026 · 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
60	June 28, 2023	Formal	State Administrative/Compliance Order without penalty issued
62	August 29, 2023	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 151 · Glyphosate · Synthetic Organic Chemicals

Noncompliance period start October 1, 2022 · period end December 31, 2022 · first reported September 24, 2026 · 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
60	June 28, 2023	Formal	State Administrative/Compliance Order without penalty issued
62	August 29, 2023	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 150 · Endothall · Synthetic Organic Chemicals

Noncompliance period start October 1, 2022 · period end December 31, 2022 · first reported September 24, 2026 · 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
60	June 28, 2023	Formal	State Administrative/Compliance Order without penalty issued
62	August 29, 2023	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 149 · Diquat · Synthetic Organic Chemicals

Noncompliance period start October 1, 2022 · period end December 31, 2022 · first reported September 24, 2026 · 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
60	June 28, 2023	Formal	State Administrative/Compliance Order without penalty issued
62	August 29, 2023	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 148 · Dinoseb · Synthetic Organic Chemicals

Noncompliance period start October 1, 2022 · period end December 31, 2022 · first reported September 24, 2026 · 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
60	June 28, 2023	Formal	State Administrative/Compliance Order without penalty issued
62	August 29, 2023	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 147 · Di(2-ethylhexyl) phthalate · Synthetic Organic Chemicals

Noncompliance period start October 1, 2022 · period end December 31, 2022 · first reported September 24, 2026 · 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
60	June 28, 2023	Formal	State Administrative/Compliance Order without penalty issued
62	August 29, 2023	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 146 · Di(2-ethylhexyl) adipate · Synthetic Organic Chemicals

Noncompliance period start October 1, 2022 · period end December 31, 2022 · first reported September 24, 2026 · 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
60	June 28, 2023	Formal	State Administrative/Compliance Order without penalty issued
62	August 29, 2023	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 145 · Dalapon · Synthetic Organic Chemicals

Noncompliance period start October 1, 2022 · period end December 31, 2022 · first reported September 24, 2026 · 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
60	June 28, 2023	Formal	State Administrative/Compliance Order without penalty issued
62	August 29, 2023	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 144 · Benzo(a)pyrene · Synthetic Organic Chemicals

Noncompliance period start October 1, 2022 · period end December 31, 2022 · first reported September 24, 2026 · 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
60	June 28, 2023	Formal	State Administrative/Compliance Order without penalty issued
62	August 29, 2023	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 143 · 1,2-DIBROMO-3-CHLOROPROPANE · Synthetic Organic Chemicals

Noncompliance period start October 1, 2022 · period end December 31, 2022 · first reported September 24, 2026 · 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
60	June 28, 2023	Formal	State Administrative/Compliance Order without penalty issued
62	August 29, 2023	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 142 · Total Polychlorinated Biphenyls (PCB) · Synthetic Organic Chemicals

Noncompliance period start October 1, 2022 · period end December 31, 2022 · first reported September 24, 2026 · 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
60	June 28, 2023	Formal	State Administrative/Compliance Order without penalty issued
62	August 29, 2023	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 141 · BHC-GAMMA · Synthetic Organic Chemicals

Noncompliance period start October 1, 2022 · period end December 31, 2022 · first reported September 24, 2026 · 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
60	June 28, 2023	Formal	State Administrative/Compliance Order without penalty issued
62	August 29, 2023	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 140 · Methoxychlor · Synthetic Organic Chemicals

Noncompliance period start October 1, 2022 · period end December 31, 2022 · first reported September 24, 2026 · 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
60	June 28, 2023	Formal	State Administrative/Compliance Order without penalty issued
62	August 29, 2023	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 139 · 2,4,5-TP · Synthetic Organic Chemicals

Noncompliance period start October 1, 2022 · period end December 31, 2022 · first reported September 24, 2026 · 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
60	June 28, 2023	Formal	State Administrative/Compliance Order without penalty issued
62	August 29, 2023	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 138 · Toxaphene · Synthetic Organic Chemicals

Noncompliance period start October 1, 2022 · period end December 31, 2022 · first reported September 24, 2026 · 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
60	June 28, 2023	Formal	State Administrative/Compliance Order without penalty issued
62	August 29, 2023	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 137 · Pentachlorophenol · Synthetic Organic Chemicals

Noncompliance period start October 1, 2022 · period end December 31, 2022 · first reported September 24, 2026 · 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
60	June 28, 2023	Formal	State Administrative/Compliance Order without penalty issued
62	August 29, 2023	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 136 · Heptachlor · Synthetic Organic Chemicals

Noncompliance period start October 1, 2022 · period end December 31, 2022 · first reported September 24, 2026 · 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
60	June 28, 2023	Formal	State Administrative/Compliance Order without penalty issued
62	August 29, 2023	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 135 · Heptachlor epoxide · Synthetic Organic Chemicals

Noncompliance period start October 1, 2022 · period end December 31, 2022 · first reported September 24, 2026 · 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
60	June 28, 2023	Formal	State Administrative/Compliance Order without penalty issued
62	August 29, 2023	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 134 · ETHYLENE DIBROMIDE · Synthetic Organic Chemicals

Noncompliance period start October 1, 2022 · period end December 31, 2022 · first reported September 24, 2026 · 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
60	June 28, 2023	Formal	State Administrative/Compliance Order without penalty issued
62	August 29, 2023	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 133 · Endrin · Synthetic Organic Chemicals

Noncompliance period start October 1, 2022 · period end December 31, 2022 · first reported September 24, 2026 · 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
60	June 28, 2023	Formal	State Administrative/Compliance Order without penalty issued
62	August 29, 2023	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 132 · 2,4-D · Synthetic Organic Chemicals

Noncompliance period start October 1, 2022 · period end December 31, 2022 · first reported September 24, 2026 · 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
60	June 28, 2023	Formal	State Administrative/Compliance Order without penalty issued
62	August 29, 2023	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 131 · Chlordane · Synthetic Organic Chemicals

Noncompliance period start October 1, 2022 · period end December 31, 2022 · first reported September 24, 2026 · 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
60	June 28, 2023	Formal	State Administrative/Compliance Order without penalty issued
62	August 29, 2023	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 130 · Carbofuran · Synthetic Organic Chemicals

Noncompliance period start October 1, 2022 · period end December 31, 2022 · first reported September 24, 2026 · 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
60	June 28, 2023	Formal	State Administrative/Compliance Order without penalty issued
62	August 29, 2023	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 129 · Atrazine · Synthetic Organic Chemicals

Noncompliance period start October 1, 2022 · period end December 31, 2022 · first reported September 24, 2026 · 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
60	June 28, 2023	Formal	State Administrative/Compliance Order without penalty issued
62	August 29, 2023	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 128 · LASSO · Synthetic Organic Chemicals

Noncompliance period start October 1, 2022 · period end December 31, 2022 · first reported September 24, 2026 · 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
60	June 28, 2023	Formal	State Administrative/Compliance Order without penalty issued
62	August 29, 2023	Resolving	State Compliance achieved

Monitoring or reporting · Archived
Monitoring, RegularViolation 112 · 2,3,7,8-TCDD · Synthetic Organic Chemicals
Noncompliance period start October 1, 2022 · period end December 31, 2022 · first reported September 18, 2023 · EPA return-to-compliance field December 31, 2022
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 111 · Simazine · Synthetic Organic Chemicals
Noncompliance period start October 1, 2022 · period end December 31, 2022 · first reported September 18, 2023 · EPA return-to-compliance field December 31, 2022
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 110 · Picloram · Synthetic Organic Chemicals
Noncompliance period start October 1, 2022 · period end December 31, 2022 · first reported September 18, 2023 · EPA return-to-compliance field December 31, 2022
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 109 · OXAMYL · Synthetic Organic Chemicals
Noncompliance period start October 1, 2022 · period end December 31, 2022 · first reported September 18, 2023 · EPA return-to-compliance field December 31, 2022
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 108 · Hexachlorocyclopentadiene · Synthetic Organic Chemicals
Noncompliance period start October 1, 2022 · period end December 31, 2022 · first reported September 18, 2023 · EPA return-to-compliance field December 31, 2022
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 107 · HEXACHLOROBENZENE · Synthetic Organic Chemicals
Noncompliance period start October 1, 2022 · period end December 31, 2022 · first reported September 18, 2023 · EPA return-to-compliance field December 31, 2022
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 106 · Glyphosate · Synthetic Organic Chemicals
Noncompliance period start October 1, 2022 · period end December 31, 2022 · first reported September 18, 2023 · EPA return-to-compliance field December 31, 2022
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 105 · Endothall · Synthetic Organic Chemicals
Noncompliance period start October 1, 2022 · period end December 31, 2022 · first reported September 18, 2023 · EPA return-to-compliance field December 31, 2022
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 104 · Diquat · Synthetic Organic Chemicals
Noncompliance period start October 1, 2022 · period end December 31, 2022 · first reported September 18, 2023 · EPA return-to-compliance field December 31, 2022
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 103 · Dinoseb · Synthetic Organic Chemicals
Noncompliance period start October 1, 2022 · period end December 31, 2022 · first reported September 18, 2023 · EPA return-to-compliance field December 31, 2022
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 102 · Di(2-ethylhexyl) phthalate · Synthetic Organic Chemicals
Noncompliance period start October 1, 2022 · period end December 31, 2022 · first reported September 18, 2023 · EPA return-to-compliance field December 31, 2022
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 101 · Di(2-ethylhexyl) adipate · Synthetic Organic Chemicals
Noncompliance period start October 1, 2022 · period end December 31, 2022 · first reported September 18, 2023 · EPA return-to-compliance field December 31, 2022
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 100 · Dalapon · Synthetic Organic Chemicals
Noncompliance period start October 1, 2022 · period end December 31, 2022 · first reported September 18, 2023 · EPA return-to-compliance field December 31, 2022
No linked action row appears in the records shown.

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