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PA1150098 · Pennsylvania

AQUA PA WEST CHESTER

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

Violation records shown: 30
EPA health-based flag: 0
Health-based records unresolved in this snapshot: 0
Monitoring and reporting records: 30

Counties listed by EPA · Chester County, Pennsylvania

Open the EPA system record

Find the utility’s annual water quality report. For current advisories, check the utility or local drinking-water authority.

Violations and what followed

Among 30 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 · Resolved

Monitoring, RegularViolation 2403937 · Chlordane · Synthetic Organic Chemicals

Noncompliance period start October 1, 2023 · period end December 31, 2023 · first reported February 23, 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
240390984003	February 2, 2024	Informal	State Violation/Reminder Notice
240390886002	February 14, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 2403936 · ETHYLENE DIBROMIDE · Synthetic Organic Chemicals

Noncompliance period start October 1, 2023 · period end December 31, 2023 · first reported February 23, 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
240390984003	February 2, 2024	Informal	State Violation/Reminder Notice
240390886002	February 14, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 2403935 · 1,2-DIBROMO-3-CHLOROPROPANE · Synthetic Organic Chemicals

Noncompliance period start October 1, 2023 · period end December 31, 2023 · first reported February 23, 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
240390984003	February 2, 2024	Informal	State Violation/Reminder Notice
240390886002	February 14, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 2403934 · Total Polychlorinated Biphenyls (PCB) · Synthetic Organic Chemicals

Noncompliance period start October 1, 2023 · period end December 31, 2023 · first reported February 23, 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
240390984003	February 2, 2024	Informal	State Violation/Reminder Notice
240390886002	February 14, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 2403933 · Pentachlorophenol · Synthetic Organic Chemicals

Noncompliance period start October 1, 2023 · period end December 31, 2023 · first reported February 23, 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
240390984003	February 2, 2024	Informal	State Violation/Reminder Notice
240390886002	February 14, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 2403932 · Benzo(a)pyrene · Synthetic Organic Chemicals

Noncompliance period start October 1, 2023 · period end December 31, 2023 · first reported February 23, 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
240390984003	February 2, 2024	Informal	State Violation/Reminder Notice
240390886002	February 14, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 2403931 · HEXACHLOROBENZENE · Synthetic Organic Chemicals

Noncompliance period start October 1, 2023 · period end December 31, 2023 · first reported February 23, 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
240390984003	February 2, 2024	Informal	State Violation/Reminder Notice
240390886002	February 14, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 2403930 · 2,4,5-TP · Synthetic Organic Chemicals

Noncompliance period start October 1, 2023 · period end December 31, 2023 · first reported February 23, 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
240390984003	February 2, 2024	Informal	State Violation/Reminder Notice
240390886002	February 14, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 2403929 · 2,4-D · Synthetic Organic Chemicals

Noncompliance period start October 1, 2023 · period end December 31, 2023 · first reported February 23, 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
240390984003	February 2, 2024	Informal	State Violation/Reminder Notice
240390886002	February 14, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 2403928 · Heptachlor epoxide · Synthetic Organic Chemicals

Noncompliance period start October 1, 2023 · period end December 31, 2023 · first reported February 23, 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
240390984003	February 2, 2024	Informal	State Violation/Reminder Notice
240390886002	February 14, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 2403927 · Heptachlor · Synthetic Organic Chemicals

Noncompliance period start October 1, 2023 · period end December 31, 2023 · first reported February 23, 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
240390984003	February 2, 2024	Informal	State Violation/Reminder Notice
240390886002	February 14, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 2403926 · 2,3,7,8-TCDD · Synthetic Organic Chemicals

Noncompliance period start October 1, 2023 · period end December 31, 2023 · first reported February 23, 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
240390984003	February 2, 2024	Informal	State Violation/Reminder Notice
240390886002	February 14, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 2403925 · LASSO · Synthetic Organic Chemicals

Noncompliance period start October 1, 2023 · period end December 31, 2023 · first reported February 23, 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
240390984003	February 2, 2024	Informal	State Violation/Reminder Notice
240390886002	February 14, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 2403924 · Atrazine · Synthetic Organic Chemicals

Noncompliance period start October 1, 2023 · period end December 31, 2023 · first reported February 23, 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
240390984003	February 2, 2024	Informal	State Violation/Reminder Notice
240390886002	February 14, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 2403923 · Carbofuran · Synthetic Organic Chemicals

Noncompliance period start October 1, 2023 · period end December 31, 2023 · first reported February 23, 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
240390984003	February 2, 2024	Informal	State Violation/Reminder Notice
240390886002	February 14, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 2403922 · Hexachlorocyclopentadiene · Synthetic Organic Chemicals

Noncompliance period start October 1, 2023 · period end December 31, 2023 · first reported February 23, 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
240390984003	February 2, 2024	Informal	State Violation/Reminder Notice
240390886002	February 14, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 2403921 · Dinoseb · Synthetic Organic Chemicals

Noncompliance period start October 1, 2023 · period end December 31, 2023 · first reported February 23, 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
240390984003	February 2, 2024	Informal	State Violation/Reminder Notice
240390886002	February 14, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 2403920 · Picloram · Synthetic Organic Chemicals

Noncompliance period start October 1, 2023 · period end December 31, 2023 · first reported February 23, 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
240390984003	February 2, 2024	Informal	State Violation/Reminder Notice
240390886002	February 14, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 2403919 · Di(2-ethylhexyl) phthalate · Synthetic Organic Chemicals

Noncompliance period start October 1, 2023 · period end December 31, 2023 · first reported February 23, 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
240390984003	February 2, 2024	Informal	State Violation/Reminder Notice
240390886002	February 14, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 2403918 · Simazine · Synthetic Organic Chemicals

Noncompliance period start October 1, 2023 · period end December 31, 2023 · first reported February 23, 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
240390984003	February 2, 2024	Informal	State Violation/Reminder Notice
240390886002	February 14, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 2403917 · OXAMYL · Synthetic Organic Chemicals

Noncompliance period start October 1, 2023 · period end December 31, 2023 · first reported February 23, 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
240390984003	February 2, 2024	Informal	State Violation/Reminder Notice
240390886002	February 14, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 2403916 · Di(2-ethylhexyl) adipate · Synthetic Organic Chemicals

Noncompliance period start October 1, 2023 · period end December 31, 2023 · first reported February 23, 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
240390984003	February 2, 2024	Informal	State Violation/Reminder Notice
240390886002	February 14, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 2403915 · Glyphosate · Synthetic Organic Chemicals

Noncompliance period start October 1, 2023 · period end December 31, 2023 · first reported February 23, 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
240390984003	February 2, 2024	Informal	State Violation/Reminder Notice
240390886002	February 14, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 2403914 · Endothall · Synthetic Organic Chemicals

Noncompliance period start October 1, 2023 · period end December 31, 2023 · first reported February 23, 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
240390984003	February 2, 2024	Informal	State Violation/Reminder Notice
240390886002	February 14, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 2403913 · Diquat · Synthetic Organic Chemicals

Noncompliance period start October 1, 2023 · period end December 31, 2023 · first reported February 23, 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
240390984003	February 2, 2024	Informal	State Violation/Reminder Notice
240390886002	February 14, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 2403912 · Dalapon · Synthetic Organic Chemicals

Noncompliance period start October 1, 2023 · period end December 31, 2023 · first reported February 23, 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
240390984003	February 2, 2024	Informal	State Violation/Reminder Notice
240390886002	February 14, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 2403911 · Toxaphene · Synthetic Organic Chemicals

Noncompliance period start October 1, 2023 · period end December 31, 2023 · first reported February 23, 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
240390984003	February 2, 2024	Informal	State Violation/Reminder Notice
240390886002	February 14, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 2403910 · Methoxychlor · Synthetic Organic Chemicals

Noncompliance period start October 1, 2023 · period end December 31, 2023 · first reported February 23, 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
240390984003	February 2, 2024	Informal	State Violation/Reminder Notice
240390886002	February 14, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 2403909 · BHC-GAMMA · Synthetic Organic Chemicals

Noncompliance period start October 1, 2023 · period end December 31, 2023 · first reported February 23, 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
240390984003	February 2, 2024	Informal	State Violation/Reminder Notice
240390886002	February 14, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 2403908 · Endrin · Synthetic Organic Chemicals

Noncompliance period start October 1, 2023 · period end December 31, 2023 · first reported February 23, 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
240390884002	February 1, 2024	Informal	State Violation/Reminder Notice
240390886002	February 14, 2024	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