CO0159063 · Colorado
HAMILTON CREEK MD
Federal fiscal 2026Q3 · EPA violation and follow-up records
- Violation records shown
- 5
- EPA health-based flag
- 0
- Health-based records unresolved in this snapshot
- 0
- Monitoring and reporting records
- 5
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 5 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 3902712 · Interim Enhanced Surface Water Treatment Rule · Interim and Long Term 1 Enhanced Surface Water Treatment RuleNoncompliance period start October 1, 2025 · period end October 16, 2025 · first reported February 23, 2026 · EPA return-to-compliance field October 16, 2025
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 617 October 16, 2025 Resolving State Compliance achieved 618 November 21, 2025 Informal State Violation/Reminder Notice 619 November 21, 2025 Informal State Public Notification requested Monitoring or reporting · Resolved
Monitoring, Turbidity (Enhanced SWTR)Violation 3902711 · Interim Enhanced Surface Water Treatment Rule · Interim and Long Term 1 Enhanced Surface Water Treatment RuleNoncompliance period start September 1, 2025 · period end September 30, 2025 · first reported November 17, 2025 · EPA return-to-compliance field September 30, 2025
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 615 September 12, 2025 Informal State Violation/Reminder Notice 616 September 12, 2025 Informal State Public Notification requested 617 October 16, 2025 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, Turbidity (Enhanced SWTR)Violation 3902710 · Interim Enhanced Surface Water Treatment Rule · Interim and Long Term 1 Enhanced Surface Water Treatment RuleNoncompliance period start August 1, 2025 · period end August 31, 2025 · first reported November 17, 2025 · EPA return-to-compliance field August 31, 2025
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 613 September 2, 2025 Informal State Violation/Reminder Notice 614 September 2, 2025 Informal State Public Notification requested 617 October 16, 2025 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, Turbidity (Enhanced SWTR)Violation 3902709 · 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
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 610 January 13, 2025 Informal State Violation/Reminder Notice 611 January 13, 2025 Informal State Public Notification requested 612 January 14, 2025 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring of Treatment (SWTR-Filter)Violation 3902708 · 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 608 January 13, 2025 Informal State Violation/Reminder Notice 609 January 13, 2025 Informal State Public Notification requested 612 January 14, 2025 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