CO0130065 · Colorado

INDIAN HILLS WD

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

Violation records shown: 12
EPA health-based flag: 0
Health-based records unresolved in this snapshot: 0
Monitoring and reporting records: 11

Counties listed by EPA · Jefferson 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 30 days. The interval uses the reporting periods and dates on file.

Other or unclassified · Unaddressed by formal action

Consumer Confidence Report Complete Failure to ReportViolation 4005159 · Consumer Confidence Rule · Consumer Confidence Rule

Noncompliance period start July 1, 2026 · first reported September 15, 2026

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4024234	July 13, 2026	Informal	State Violation/Reminder Notice
4024235	July 13, 2026	Informal	State Public Notification requested

Monitoring or reporting · Archived

Monitoring, Turbidity (Enhanced SWTR)Violation 4005157 · Interim Enhanced Surface Water Treatment Rule · Interim and Long Term 1 Enhanced Surface Water Treatment Rule

Noncompliance period start December 1, 2025 · period end December 31, 2025 · first reported February 23, 2026 · EPA return-to-compliance field December 31, 2025

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4024229	January 21, 2026	Informal	State Violation/Reminder Notice
4024230	January 21, 2026	Informal	State Public Notification requested

Monitoring or reporting · Archived

Monitoring of Treatment (SWTR-Filter)Violation 4005156 · Surface Water Treatment Rule · Surface Water Treatment Rule

Noncompliance period start December 1, 2025 · period end December 31, 2025 · first reported February 23, 2026 · EPA return-to-compliance field December 31, 2025

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4024227	January 21, 2026	Informal	State Violation/Reminder Notice
4024228	January 21, 2026	Informal	State Public Notification requested

Monitoring or reporting · Archived

Monitoring, Turbidity (Enhanced SWTR)Violation 4005155 · Interim Enhanced Surface Water Treatment Rule · Interim and Long Term 1 Enhanced Surface Water Treatment Rule

Noncompliance period start November 1, 2025 · period end November 30, 2025 · first reported February 23, 2026 · EPA return-to-compliance field November 30, 2025

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4024225	December 12, 2025	Informal	State Violation/Reminder Notice
4024226	December 12, 2025	Informal	State Public Notification requested

Monitoring or reporting · Archived

Monitoring, Turbidity (Enhanced SWTR)Violation 4005154 · Interim Enhanced Surface Water Treatment Rule · Interim and Long Term 1 Enhanced Surface Water Treatment Rule

Noncompliance period start November 1, 2025 · period end November 30, 2025 · first reported February 23, 2026 · EPA return-to-compliance field November 30, 2025

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4024223	December 12, 2025	Informal	State Violation/Reminder Notice
4024224	December 12, 2025	Informal	State Public Notification requested

Monitoring or reporting · Archived

Monitoring of Treatment (SWTR-Filter)Violation 4005153 · Surface Water Treatment Rule · Surface Water Treatment Rule

Noncompliance period start November 1, 2025 · period end November 30, 2025 · first reported February 23, 2026 · EPA return-to-compliance field November 30, 2025

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4024221	December 12, 2025	Informal	State Violation/Reminder Notice
4024222	December 12, 2025	Informal	State Public Notification requested

Monitoring or reporting · Archived

Monitoring of Treatment (SWTR-Filter)Violation 4005152 · Surface Water Treatment Rule · Surface Water Treatment Rule

Noncompliance period start November 1, 2025 · period end November 30, 2025 · first reported February 23, 2026 · EPA return-to-compliance field November 30, 2025

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4024219	December 12, 2025	Informal	State Violation/Reminder Notice
4024220	December 12, 2025	Informal	State Public Notification requested

Monitoring or reporting · Resolved

Monitoring, RegularViolation 4005151 · Nitrate · Nitrate Rule

Noncompliance period start July 1, 2024 · period end September 30, 2024 · first reported November 14, 2024 · EPA return-to-compliance field September 30, 2024

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4024216	October 17, 2024	Informal	State Violation/Reminder Notice
4024217	October 17, 2024	Informal	State Public Notification requested
4024231	November 14, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Archived

Monitoring and Reporting (DBP)Violation 4005150 · 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

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4024213	January 24, 2024	Informal	State Violation/Reminder Notice
4024214	January 24, 2024	Informal	State Public Notification requested

Monitoring or reporting · Archived

Monitoring and Reporting (DBP)Violation 4005149 · 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

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4024213	January 24, 2024	Informal	State Violation/Reminder Notice
4024214	January 24, 2024	Informal	State Public Notification requested

Monitoring or reporting · Resolved

Monitoring, Turbidity (Enhanced SWTR)Violation 4005148 · Interim Enhanced Surface Water Treatment Rule · Interim and Long Term 1 Enhanced Surface Water Treatment Rule

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

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4024218	January 11, 2023	Resolving	State Compliance achieved
4024211	January 25, 2023	Informal	State Violation/Reminder Notice
4024212	January 25, 2023	Informal	State Public Notification requested

Monitoring or reporting · Resolved

Monitoring of Treatment (SWTR-Filter)Violation 4005146 · Surface Water Treatment Rule · Surface Water Treatment Rule

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

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4024218	January 11, 2023	Resolving	State Compliance achieved
4024207	January 25, 2023	Informal	State Violation/Reminder Notice
4024208	January 25, 2023	Informal	State Public Notification requested

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