CO0110026 · Colorado

LOOKOUT MOUNTAIN WD

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

Violation records shown: 14
EPA health-based flag: 11
Health-based records unresolved in this snapshot: 0
Monitoring and reporting records: 3

Counties listed by EPA · Clear Creek 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 14 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 90.5 days. The interval uses the reporting periods and dates on file.

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 4005425 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start April 1, 2024 · period end June 30, 2024 · first reported August 14, 2024 · EPA return-to-compliance field June 30, 2024

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4028140	February 13, 2023	Formal	State Administrative/Compliance Order without penalty issued
4028161	May 29, 2024	Informal	State Violation/Reminder Notice
4028162	May 29, 2024	Informal	State Public Notification requested
4028164	June 4, 2024	Informal	State Public Notification received
4028165	October 7, 2024	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 4005424 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start October 1, 2023 · period end December 31, 2023 · first reported February 14, 2024 · EPA return-to-compliance field December 31, 2023

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4028140	February 13, 2023	Formal	State Administrative/Compliance Order without penalty issued
4028157	December 13, 2023	Informal	State Violation/Reminder Notice
4028158	December 13, 2023	Informal	State Public Notification requested
4028159	January 2, 2024	Informal	State Public Notification received
4028163	February 28, 2024	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 4005423 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start October 1, 2023 · period end December 31, 2023 · first reported February 14, 2024 · EPA return-to-compliance field December 31, 2023

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4028140	February 13, 2023	Formal	State Administrative/Compliance Order without penalty issued
4028157	December 13, 2023	Informal	State Violation/Reminder Notice
4028158	December 13, 2023	Informal	State Public Notification requested
4028159	January 2, 2024	Informal	State Public Notification received
4028163	February 28, 2024	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 4005422 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start July 1, 2023 · period end September 30, 2023 · first reported November 15, 2023 · EPA return-to-compliance field September 30, 2023

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4028140	February 13, 2023	Formal	State Administrative/Compliance Order without penalty issued
4028151	September 12, 2023	Informal	State Violation/Reminder Notice
4028152	September 12, 2023	Informal	State Public Notification requested
4028154	October 2, 2023	Informal	State Public Notification received
4028163	February 28, 2024	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 4005421 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start July 1, 2023 · period end September 30, 2023 · first reported November 15, 2023 · EPA return-to-compliance field September 30, 2023

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4028140	February 13, 2023	Formal	State Administrative/Compliance Order without penalty issued
4028149	September 12, 2023	Informal	State Violation/Reminder Notice
4028150	September 12, 2023	Informal	State Public Notification requested
4028155	October 2, 2023	Informal	State Public Notification received
4028163	February 28, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, Turbidity (Enhanced SWTR)Violation 4005420 · Interim Enhanced Surface Water Treatment Rule · Interim and Long Term 1 Enhanced Surface Water Treatment Rule

Noncompliance period start March 1, 2023 · period end March 31, 2023 · first reported May 15, 2023 · EPA return-to-compliance field March 31, 2023

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4028147	April 17, 2023	Informal	State Violation/Reminder Notice
4028148	April 17, 2023	Informal	State Public Notification requested
4028153	May 1, 2023	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 4005419 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start January 1, 2023 · period end March 31, 2023 · first reported May 15, 2023 · EPA return-to-compliance field March 31, 2023

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4028140	February 13, 2023	Formal	State Administrative/Compliance Order without penalty issued
4028143	March 1, 2023	Informal	State Violation/Reminder Notice
4028144	March 1, 2023	Informal	State Public Notification requested
4028145	March 30, 2023	Informal	State Public Notification received
4028156	May 22, 2023	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 4005418 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start January 1, 2023 · period end March 31, 2023 · first reported May 15, 2023 · EPA return-to-compliance field March 31, 2023

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4028140	February 13, 2023	Formal	State Administrative/Compliance Order without penalty issued
4028141	March 1, 2023	Informal	State Violation/Reminder Notice
4028142	March 1, 2023	Informal	State Public Notification requested
4028146	March 30, 2023	Informal	State Public Notification received
4028156	May 22, 2023	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 4005417 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start October 1, 2022 · period end December 31, 2022 · first reported February 14, 2023 · EPA return-to-compliance field December 31, 2022

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4028137	December 20, 2022	Informal	State Violation/Reminder Notice
4028138	December 20, 2022	Informal	State Public Notification requested
4028139	January 5, 2023	Informal	State Public Notification received
4028140	February 13, 2023	Formal	State Administrative/Compliance Order without penalty issued
4028156	May 22, 2023	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 4005416 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start July 1, 2022 · period end September 30, 2022 · first reported November 16, 2022 · EPA return-to-compliance field September 30, 2022

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4028133	September 12, 2022	Informal	State Violation/Reminder Notice
4028134	September 12, 2022	Informal	State Public Notification requested
4028135	October 5, 2022	Informal	State Public Notification received
4028140	February 13, 2023	Formal	State Administrative/Compliance Order without penalty issued
4028156	May 22, 2023	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 4005415 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start July 1, 2022 · period end September 30, 2022 · first reported November 16, 2022 · EPA return-to-compliance field September 30, 2022

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4028131	September 12, 2022	Informal	State Violation/Reminder Notice
4028132	September 12, 2022	Informal	State Public Notification requested
4028136	October 5, 2022	Informal	State Public Notification received
4028140	February 13, 2023	Formal	State Administrative/Compliance Order without penalty issued
4028156	May 22, 2023	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 4005414 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start April 1, 2022 · period end June 30, 2022 · first reported August 15, 2022 · EPA return-to-compliance field June 30, 2022

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4028127	June 1, 2022	Informal	State Violation/Reminder Notice
4028128	June 1, 2022	Informal	State Public Notification requested
4028129	June 28, 2022	Informal	State Public Notification received
4028140	February 13, 2023	Formal	State Administrative/Compliance Order without penalty issued
4028156	May 22, 2023	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring of Treatment (SWTR-Filter)Violation 4005413 · Surface Water Treatment Rule · Surface Water Treatment Rule

Noncompliance period start October 1, 2021 · period end October 31, 2021 · first reported February 23, 2022 · EPA return-to-compliance field October 31, 2021

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4028125	November 18, 2021	Informal	State Violation/Reminder Notice
4028126	November 18, 2021	Informal	State Public Notification requested
4028130	November 18, 2021	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, Turbidity (Enhanced SWTR)Violation 4005412 · Interim Enhanced Surface Water Treatment Rule · Interim and Long Term 1 Enhanced Surface Water Treatment Rule

Noncompliance period start October 1, 2021 · period end October 31, 2021 · first reported February 23, 2022 · EPA return-to-compliance field October 31, 2021

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4028123	November 18, 2021	Informal	State Violation/Reminder Notice
4028124	November 18, 2021	Informal	State Public Notification requested
4028130	November 18, 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