CO0159045 · Colorado
EAST DILLON WD
Federal fiscal 2026Q3 · EPA violation and follow-up records
- Violation records shown
- 7
- EPA health-based flag
- 0
- Health-based records unresolved in this snapshot
- 0
- Monitoring and reporting records
- 7
Counties listed by EPA · Summit County, Colorado
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 30 days. The interval uses the reporting periods and dates on file.
Monitoring or reporting · Resolved
Monitoring, Turbidity (Enhanced SWTR)Violation 212 · Interim Enhanced Surface Water Treatment Rule · Interim and Long Term 1 Enhanced Surface Water Treatment RuleNoncompliance period start September 1, 2023 · period end September 30, 2023 · first reported November 15, 2023 · EPA return-to-compliance field September 30, 2023
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 419 October 13, 2023 Informal State Violation/Reminder Notice 420 October 13, 2023 Informal State Public Notification requested 423 October 15, 2023 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring of Treatment (SWTR-Filter)Violation 211 · Surface Water Treatment Rule · Surface Water Treatment RuleNoncompliance period start September 1, 2023 · period end September 30, 2023 · first reported November 15, 2023 · EPA return-to-compliance field September 30, 2023
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 417 October 13, 2023 Informal State Violation/Reminder Notice 418 October 13, 2023 Informal State Public Notification requested 423 October 15, 2023 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 214 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start July 1, 2023 · period end September 30, 2023 · first reported November 15, 2023 · EPA return-to-compliance field September 30, 2023
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 421 October 13, 2023 Informal State Violation/Reminder Notice 422 October 13, 2023 Informal State Public Notification requested 424 November 21, 2023 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 213 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start July 1, 2023 · period end September 30, 2023 · first reported November 15, 2023 · EPA return-to-compliance field September 30, 2023
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 421 October 13, 2023 Informal State Violation/Reminder Notice 422 October 13, 2023 Informal State Public Notification requested 424 November 21, 2023 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, Source Water (LT2)Violation 210 · E. COLI · Long Term 2 Enhanced Surface Water Treatment RuleNoncompliance period start October 1, 2021 · period end October 31, 2021 · first reported May 17, 2022 · EPA return-to-compliance field October 31, 2021
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 413 March 15, 2022 Informal State Violation/Reminder Notice 414 March 15, 2022 Informal State Public Notification requested 415 March 15, 2022 Resolving State Compliance achieved 416 April 20, 2022 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring of Treatment (SWTR-Filter)Violation 209 · Surface Water Treatment Rule · Surface Water Treatment RuleNoncompliance period start October 1, 2021 · period end October 31, 2021 · first reported February 23, 2022 · EPA return-to-compliance field October 31, 2021
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 410 November 18, 2021 Informal State Violation/Reminder Notice 411 November 18, 2021 Informal State Public Notification requested 412 November 19, 2021 Resolving State Compliance achieved 416 April 20, 2022 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring, Turbidity (Enhanced SWTR)Violation 208 · Interim Enhanced Surface Water Treatment Rule · Interim and Long Term 1 Enhanced Surface Water Treatment RuleNoncompliance period start October 1, 2021 · period end October 31, 2021 · first reported February 23, 2022 · EPA return-to-compliance field October 31, 2021
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 408 November 18, 2021 Informal State Violation/Reminder Notice 409 November 18, 2021 Informal State Public Notification requested 412 November 19, 2021 Resolving State Compliance achieved 416 April 20, 2022 Informal State Public Notification received
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