CO0210017 · Colorado
MILL CREEK WIA
Federal fiscal 2026Q3 · EPA violation and follow-up records
- Violation records shown
- 14
- EPA health-based flag
- 0
- Health-based records unresolved in this snapshot
- 0
- Monitoring and reporting records
- 14
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 365 days. The interval uses the reporting periods and dates on file.
Monitoring or reporting · Resolved
Monitoring, Turbidity (Enhanced SWTR)Violation 3017252 · Interim Enhanced Surface Water Treatment Rule · Interim and Long Term 1 Enhanced Surface Water Treatment RuleNoncompliance period start December 1, 2024 · period end December 31, 2024 · first reported February 18, 2025 · EPA return-to-compliance field December 31, 2024
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3045443 January 13, 2025 Informal State Violation/Reminder Notice 3045444 January 13, 2025 Informal State Public Notification requested 3045447 January 13, 2025 Resolving State Compliance achieved 3045449 May 10, 2025 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring of Treatment (SWTR-Filter)Violation 3017251 · Surface Water Treatment Rule · Surface Water Treatment RuleNoncompliance period start December 1, 2024 · period end December 31, 2024 · first reported February 18, 2025 · EPA return-to-compliance field December 31, 2024
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3045441 January 13, 2025 Informal State Violation/Reminder Notice 3045442 January 13, 2025 Informal State Public Notification requested 3045447 January 13, 2025 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 3017263 · Selenium · Inorganic ChemicalsNoncompliance period start January 1, 2024 · period end December 31, 2024 · first reported February 18, 2025 · EPA return-to-compliance field December 31, 2024
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3045445 January 14, 2025 Informal State Violation/Reminder Notice 3045446 January 14, 2025 Informal State Public Notification requested 3045448 January 20, 2025 Resolving State Compliance achieved 3045449 May 10, 2025 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring, RegularViolation 3017262 · Thallium, Total · Inorganic ChemicalsNoncompliance period start January 1, 2024 · period end December 31, 2024 · first reported February 18, 2025 · EPA return-to-compliance field December 31, 2024
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3045445 January 14, 2025 Informal State Violation/Reminder Notice 3045446 January 14, 2025 Informal State Public Notification requested 3045448 January 20, 2025 Resolving State Compliance achieved 3045449 May 10, 2025 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring, RegularViolation 3017261 · Beryllium, Total · Inorganic ChemicalsNoncompliance period start January 1, 2024 · period end December 31, 2024 · first reported February 18, 2025 · EPA return-to-compliance field December 31, 2024
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3045445 January 14, 2025 Informal State Violation/Reminder Notice 3045446 January 14, 2025 Informal State Public Notification requested 3045448 January 20, 2025 Resolving State Compliance achieved 3045449 May 10, 2025 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring, RegularViolation 3017260 · Antimony, Total · Inorganic ChemicalsNoncompliance period start January 1, 2024 · period end December 31, 2024 · first reported February 18, 2025 · EPA return-to-compliance field December 31, 2024
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3045445 January 14, 2025 Informal State Violation/Reminder Notice 3045446 January 14, 2025 Informal State Public Notification requested 3045448 January 20, 2025 Resolving State Compliance achieved 3045449 May 10, 2025 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring, RegularViolation 3017258 · Nickel · Inorganic ChemicalsNoncompliance period start January 1, 2024 · period end December 31, 2024 · first reported February 18, 2025 · EPA return-to-compliance field December 31, 2024
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3045445 January 14, 2025 Informal State Violation/Reminder Notice 3045446 January 14, 2025 Informal State Public Notification requested 3045448 January 20, 2025 Resolving State Compliance achieved 3045449 May 10, 2025 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring, RegularViolation 3017257 · Mercury · Inorganic ChemicalsNoncompliance period start January 1, 2024 · period end December 31, 2024 · first reported February 18, 2025 · EPA return-to-compliance field December 31, 2024
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3045445 January 14, 2025 Informal State Violation/Reminder Notice 3045446 January 14, 2025 Informal State Public Notification requested 3045448 January 20, 2025 Resolving State Compliance achieved 3045449 May 10, 2025 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring, RegularViolation 3017256 · Chromium · Inorganic ChemicalsNoncompliance period start January 1, 2024 · period end December 31, 2024 · first reported February 18, 2025 · EPA return-to-compliance field December 31, 2024
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3045445 January 14, 2025 Informal State Violation/Reminder Notice 3045446 January 14, 2025 Informal State Public Notification requested 3045448 January 20, 2025 Resolving State Compliance achieved 3045449 May 10, 2025 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring, RegularViolation 3017255 · Cadmium · Inorganic ChemicalsNoncompliance period start January 1, 2024 · period end December 31, 2024 · first reported February 18, 2025 · EPA return-to-compliance field December 31, 2024
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3045445 January 14, 2025 Informal State Violation/Reminder Notice 3045446 January 14, 2025 Informal State Public Notification requested 3045448 January 20, 2025 Resolving State Compliance achieved 3045449 May 10, 2025 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring, RegularViolation 3017254 · Barium · Inorganic ChemicalsNoncompliance period start January 1, 2024 · period end December 31, 2024 · first reported February 18, 2025 · EPA return-to-compliance field December 31, 2024
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3045445 January 14, 2025 Informal State Violation/Reminder Notice 3045446 January 14, 2025 Informal State Public Notification requested 3045448 January 20, 2025 Resolving State Compliance achieved 3045449 May 10, 2025 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring, RegularViolation 3017253 · Arsenic · Arsenic RuleNoncompliance period start January 1, 2024 · period end December 31, 2024 · first reported February 18, 2025 · EPA return-to-compliance field December 31, 2024
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3045445 January 14, 2025 Informal State Violation/Reminder Notice 3045446 January 14, 2025 Informal State Public Notification requested 3045448 January 20, 2025 Resolving State Compliance achieved 3045449 May 10, 2025 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring of Treatment (SWTR-Filter)Violation 3017250 · Surface Water Treatment Rule · Surface Water Treatment RuleNoncompliance period start February 1, 2022 · period end February 28, 2022 · first reported May 17, 2022 · EPA return-to-compliance field February 28, 2022
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3045437 March 1, 2022 Resolving State Compliance achieved 3045435 March 18, 2022 Informal State Violation/Reminder Notice 3045436 March 18, 2022 Informal State Public Notification requested 3045440 May 6, 2023 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring, Turbidity (Enhanced SWTR)Violation 3017249 · Interim Enhanced Surface Water Treatment Rule · Interim and Long Term 1 Enhanced Surface Water Treatment RuleNoncompliance period start November 1, 2021 · period end November 30, 2021 · first reported February 23, 2022 · EPA return-to-compliance field November 30, 2021
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3045433 December 16, 2021 Informal State Violation/Reminder Notice 3045434 December 16, 2021 Informal State Public Notification requested 3045438 January 9, 2022 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