CO0134855 · Colorado

TWILIGHT WC

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

Violation records shown: 4
EPA health-based flag: 1
Health-based records unresolved in this snapshot: 1
Monitoring and reporting records: 3

Counties listed by EPA · La Plata 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 3 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 64 days. The interval uses the reporting periods and dates on file.

EPA health-based flag · Unaddressed by formal action

Failure To Address DeficiencyViolation 7 · Groundwater Rule · Ground Water Rule

Noncompliance period start June 2, 2017 · first reported November 15, 2017

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
15	September 15, 2017	Informal	State Violation/Reminder Notice
16	September 15, 2017	Informal	State Public Notification requested
18	November 27, 2017	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 26 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start May 1, 2024 · period end May 31, 2024 · first reported August 14, 2024 · EPA return-to-compliance field May 31, 2024

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
52	June 4, 2024	Resolving	State Compliance achieved
46	June 20, 2024	Informal	State Violation/Reminder Notice
47	June 20, 2024	Informal	State Public Notification requested

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 27 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start April 1, 2024 · period end June 4, 2024 · first reported August 14, 2024 · EPA return-to-compliance field June 4, 2024

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
52	June 4, 2024	Resolving	State Compliance achieved
48	June 20, 2024	Informal	State Violation/Reminder Notice
49	June 20, 2024	Informal	State Public Notification requested

Monitoring or reporting · Resolved

Monitoring, RegularViolation 24 · Di(2-ethylhexyl) phthalate · Synthetic Organic Chemicals

Noncompliance period start April 1, 2023 · period end June 30, 2023 · first reported August 15, 2023 · EPA return-to-compliance field June 30, 2023

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
42	July 26, 2023	Informal	State Violation/Reminder Notice
43	July 26, 2023	Informal	State Public Notification requested
44	July 29, 2023	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