CT0320061 · Connecticut
TWIN HILLS WATER DISTRICT
Federal fiscal 2026Q3 · EPA violation and follow-up records
- Violation records shown
- 9
- EPA health-based flag
- 4
- Health-based records unresolved in this snapshot
- 1
- Monitoring and reporting records
- 2
Find the utility’s annual water quality report. For current advisories, check the utility or local drinking-water authority.
Violations and what followed
Among 7 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 268 days. The interval uses the reporting periods and dates on file.
EPA health-based flag · Unaddressed by formal action
LSL InventoryViolation 1223 · LEAD AND COPPER RULE REVISIONS · Lead and Copper Rule RevisionsNoncompliance period start October 17, 2024 · first reported May 27, 2025
No linked action row appears in the records shown.Monitoring or reporting · Unaddressed by formal action
LSL ReportingViolation 1224 · LEAD AND COPPER RULE REVISIONS · Lead and Copper Rule RevisionsNoncompliance period start October 17, 2024 · first reported May 27, 2025
No linked action row appears in the records shown.EPA health-based flag · Resolved
Treatment Technique, Level 1 Assessment (RTCR)Violation 1222 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start April 12, 2023 · period end July 25, 2023 · first reported September 28, 2023 · EPA return-to-compliance field July 25, 2023
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 314545 July 25, 2023 Resolving State Compliance achieved 314546 September 14, 2023 Informal State Violation/Reminder Notice 314547 September 14, 2023 Informal State Public Notification requested 314548 October 3, 2023 Informal State Public Notification received EPA health-based flag · Resolved
Treatment Technique, Level 2 Assessment (RTCR)Violation 1220 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start July 9, 2022 · period end August 1, 2022 · first reported November 18, 2022 · EPA return-to-compliance field August 1, 2022
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 314538 August 1, 2022 Resolving State Compliance achieved 314536 September 28, 2022 Informal State Violation/Reminder Notice 314537 September 28, 2022 Informal State Public Notification requested 314541 October 27, 2022 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring, Source Water (GWR)Violation 1219 · E. COLI · Ground Water RuleNoncompliance period start June 15, 2022 · period end March 10, 2023 · first reported October 3, 2022 · EPA return-to-compliance field March 10, 2023
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 314544 March 10, 2023 Resolving State Compliance achieved 314542 May 25, 2023 Informal State Violation/Reminder Notice 314543 May 25, 2023 Informal State Public Notification received EPA health-based flag · Resolved
Treatment Technique, Level 1 Assessment (RTCR)Violation 1217 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start November 5, 2021 · period end April 20, 2022 · first reported February 16, 2022 · EPA return-to-compliance field April 20, 2022
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 314530 April 20, 2022 Resolving State Compliance achieved 314531 April 28, 2022 Informal State Violation/Reminder Notice 314532 April 28, 2022 Informal State Public Notification requested 314533 May 5, 2022 Informal State Public Notification received Other or unclassified · Resolved
Consumer Confidence Report Inadequate ReportingViolation 1218 · Consumer Confidence Rule · Consumer Confidence RuleNoncompliance period start August 10, 2021 · period end July 5, 2022 · first reported June 30, 2022 · EPA return-to-compliance field July 5, 2022
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 314534 June 21, 2022 Informal State Violation/Reminder Notice 314535 July 5, 2022 Resolving State Compliance achieved Other or unclassified · Resolved
Consumer Confidence Report Inadequate ReportingViolation 1213 · Consumer Confidence Rule · Consumer Confidence RuleNoncompliance period start August 10, 2017 · period end December 14, 2021 · first reported March 13, 2018 · EPA return-to-compliance field December 14, 2021
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 314522 January 2, 2018 Informal State Violation/Reminder Notice 314529 December 14, 2021 Resolving State Compliance achieved Other or unclassified · Resolved
Consumer Confidence Report Complete Failure to ReportViolation 1214 · Consumer Confidence Rule · Consumer Confidence RuleNoncompliance period start July 1, 2017 · period end December 14, 2021 · first reported March 13, 2018 · EPA return-to-compliance field December 14, 2021
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 314523 January 2, 2018 Informal State Violation/Reminder Notice 314528 December 14, 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