CO0130055 · Colorado

IDLEDALE WSD

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

Violation records shown: 35
EPA health-based flag: 1
Health-based records unresolved in this snapshot: 0
Monitoring and reporting records: 20

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 27 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 29 days. The interval uses the reporting periods and dates on file.

Other or unclassified · Resolved
Public Notification Violation without NPDWR ViolationViolation 4012336 · Public Notice · Public Notice Rule and Revised PN Rule
Noncompliance period start July 20, 2026 · period end August 3, 2026 · first reported September 15, 2026 · EPA return-to-compliance field August 3, 2026

2 linked actions

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
4034469 July 30, 2026 Informal State Violation/Reminder Notice
4034470 August 3, 2026 Resolving State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4034469	July 30, 2026	Informal	State Violation/Reminder Notice
4034470	August 3, 2026	Resolving	State Compliance achieved

Other or unclassified · Unaddressed by formal action

Consumer Confidence Report Complete Failure to ReportViolation 4012333 · 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
4034462	July 13, 2026	Informal	State Violation/Reminder Notice
4034463	July 13, 2026	Informal	State Public Notification requested

Monitoring or reporting · Archived

Monitoring, Source Water (LT2)Violation 4012334 · E. COLI · Long Term 2 Enhanced Surface Water Treatment Rule

Noncompliance period start May 1, 2026 · period end May 31, 2026 · first reported September 15, 2026 · EPA return-to-compliance field May 31, 2026

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4034464	July 15, 2026	Informal	State Violation/Reminder Notice
4034465	July 15, 2026	Informal	State Public Notification requested

Monitoring or reporting · Archived

Monitoring, Source Water (LT2)Violation 4012332 · E. COLI · Long Term 2 Enhanced Surface Water Treatment Rule

Noncompliance period start April 1, 2026 · period end April 30, 2026 · first reported September 15, 2026 · EPA return-to-compliance field April 30, 2026

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4034460	June 15, 2026	Informal	State Violation/Reminder Notice
4034461	June 15, 2026	Informal	State Public Notification requested

Monitoring or reporting · Resolved

Lead Consumer NoticeViolation 4012331 · Lead and Copper Rule · Lead and Copper Rule

Noncompliance period start October 1, 2025 · period end October 26, 2025 · first reported November 17, 2025 · EPA return-to-compliance field October 26, 2025

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4034457	October 26, 2025	Resolving	State Compliance achieved
4034455	October 27, 2025	Informal	State Violation/Reminder Notice
4034456	October 27, 2025	Informal	State Public Notification requested

Monitoring or reporting · Resolved

Monitoring, Turbidity (Enhanced SWTR)Violation 4012330 · Interim Enhanced Surface Water Treatment Rule · Interim and Long Term 1 Enhanced Surface Water Treatment Rule

Noncompliance period start September 1, 2025 · period end September 8, 2025 · first reported November 17, 2025 · EPA return-to-compliance field September 8, 2025

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4034459	September 8, 2025	Resolving	State Compliance achieved
4034453	October 8, 2025	Informal	State Violation/Reminder Notice
4034454	October 8, 2025	Informal	State Public Notification requested

Monitoring or reporting · Resolved

Monitoring, Turbidity (Enhanced SWTR)Violation 4012328 · Interim Enhanced Surface Water Treatment Rule · Interim and Long Term 1 Enhanced Surface Water Treatment Rule

Noncompliance 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
4034459	September 8, 2025	Resolving	State Compliance achieved
4034449	October 8, 2025	Informal	State Violation/Reminder Notice
4034450	October 8, 2025	Informal	State Public Notification requested

Other or unclassified · Resolved

Consumer Confidence Report Complete Failure to ReportViolation 4012324 · Consumer Confidence Rule · Consumer Confidence Rule

Noncompliance period start July 1, 2025 · period end July 17, 2025 · first reported August 18, 2025 · EPA return-to-compliance field July 17, 2025

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4034440	July 14, 2025	Informal	State Violation/Reminder Notice
4034441	July 14, 2025	Informal	State Public Notification requested
4034442	July 17, 2025	Resolving	State Compliance achieved

Other or unclassified · Resolved

Public Notification Violation for NPDWR ViolationViolation 4012323 · Public Notice · Public Notice Rule and Revised PN Rule

Noncompliance period start April 7, 2025 · period end May 9, 2025 · first reported August 18, 2025 · EPA return-to-compliance field May 9, 2025

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4034436	May 9, 2025	Resolving	State Compliance achieved
4034437	May 9, 2025	Informal	State Public Notification received
4034434	May 15, 2025	Informal	State Violation/Reminder Notice
4034435	May 15, 2025	Informal	State Public Notification requested

Monitoring or reporting · Resolved

Lead Consumer NoticeViolation 4012322 · Lead and Copper Rule · Lead and Copper Rule

Noncompliance period start April 1, 2025 · period end April 6, 2025 · first reported May 15, 2025 · EPA return-to-compliance field April 6, 2025

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4034431	April 3, 2025	Informal	State Violation/Reminder Notice
4034432	April 3, 2025	Informal	State Public Notification requested
4034433	April 6, 2025	Resolving	State Compliance achieved

Other or unclassified · Resolved

Public Notification Violation for NPDWR ViolationViolation 4012321 · Public Notice · Public Notice Rule and Revised PN Rule

Noncompliance period start January 7, 2025 · period end February 3, 2025 · first reported February 18, 2025 · EPA return-to-compliance field February 3, 2025

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4034429	January 22, 2025	Informal	State Violation/Reminder Notice
4034430	February 3, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Archived

Monitoring, RegularViolation 4012325 · Toluene · Volatile Organic Chemicals

Noncompliance period start January 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
4034443	July 21, 2025	Informal	State Violation/Reminder Notice
4034444	July 21, 2025	Informal	State Public Notification requested

Other or unclassified · Resolved

Public Notification Violation for NPDWR ViolationViolation 4012320 · Public Notice · Public Notice Rule and Revised PN Rule

Noncompliance period start October 9, 2024 · period end January 9, 2025 · first reported February 18, 2025 · EPA return-to-compliance field January 9, 2025

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4034427	October 10, 2024	Informal	State Public Notification received
4034425	November 19, 2024	Informal	State Violation/Reminder Notice
4034428	January 9, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Lead Consumer NoticeViolation 4012319 · Lead and Copper Rule · Lead and Copper Rule

Noncompliance period start October 1, 2024 · period end December 4, 2024 · first reported November 14, 2024 · EPA return-to-compliance field December 4, 2024

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4034423	November 11, 2024	Informal	State Violation/Reminder Notice
4034424	November 11, 2024	Informal	State Public Notification requested
4034426	December 4, 2024	Resolving	State Compliance achieved

Other or unclassified · Resolved

Public Notification Violation for NPDWR ViolationViolation 4012318 · Public Notice · Public Notice Rule and Revised PN Rule

Noncompliance period start July 11, 2024 · period end August 26, 2024 · first reported November 14, 2024 · EPA return-to-compliance field August 26, 2024

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4034416	July 15, 2024	Informal	State Public Notification received
4034415	August 23, 2024	Informal	State Violation/Reminder Notice
4034417	August 26, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Follow-up Or Routine LCR Tap M/RViolation 4012316 · Lead and Copper Rule · Lead and Copper Rule

Noncompliance period start July 1, 2024 · period end July 26, 2024 · first reported August 14, 2024 · EPA return-to-compliance field July 26, 2024

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4034410	July 17, 2024	Informal	State Violation/Reminder Notice
4034411	July 17, 2024	Informal	State Public Notification requested
4034412	July 26, 2024	Resolving	State Compliance achieved

Other or unclassified · Resolved
Public Notification Violation for NPDWR ViolationViolation 4012312 · Public Notice · Public Notice Rule and Revised PN Rule
Noncompliance period start April 12, 2024 · period end May 7, 2024 · first reported May 16, 2024 · EPA return-to-compliance field May 7, 2024

2 linked actions

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
4034402 April 12, 2024 Informal State Violation/Reminder Notice
4034403 May 7, 2024 Resolving State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4034402	April 12, 2024	Informal	State Violation/Reminder Notice
4034403	May 7, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 4012315 · Combined Uranium · Radionuclides and Revised Rad 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

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4034408	July 17, 2024	Informal	State Violation/Reminder Notice
4034409	July 17, 2024	Informal	State Public Notification requested
4034418	August 2, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Archived

Monitoring, RegularViolation 4012314 · Combined Radium (-226 and -228) · Radionuclides and Revised Rad 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

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4034406	July 17, 2024	Informal	State Violation/Reminder Notice
4034407	July 17, 2024	Informal	State Public Notification requested

Monitoring or reporting · Resolved

Monitoring, RegularViolation 4012313 · Gross Alpha, Excl. Radon and U · Radionuclides and Revised Rad 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

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4034404	July 17, 2024	Informal	State Violation/Reminder Notice
4034405	July 17, 2024	Informal	State Public Notification requested
4034418	August 2, 2024	Resolving	State Compliance achieved

Other or unclassified · Resolved

Public Notification Violation for NPDWR ViolationViolation 4012311 · Public Notice · Public Notice Rule and Revised PN Rule

Noncompliance period start January 13, 2024 · period end January 13, 2024 · first reported May 16, 2024 · EPA return-to-compliance field January 13, 2024

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4034399	January 13, 2024	Informal	State Violation/Reminder Notice
4034401	January 13, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Archived

Monitoring, RegularViolation 4012317 · Toluene · Volatile Organic Chemicals

Noncompliance period start January 1, 2024 · period end December 31, 2024 · first reported February 18, 2025 · EPA return-to-compliance field December 31, 2024

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4034413	August 9, 2024	Informal	State Violation/Reminder Notice
4034414	August 9, 2024	Informal	State Public Notification requested

Monitoring or reporting · Resolved

Follow-up Or Routine LCR Tap M/RViolation 4012310 · Lead and Copper Rule · Lead and Copper Rule

Noncompliance period start January 1, 2024 · period end July 26, 2024 · first reported February 14, 2024 · EPA return-to-compliance field July 26, 2024

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4034397	January 24, 2024	Informal	State Violation/Reminder Notice
4034398	January 24, 2024	Informal	State Public Notification requested
4034412	July 26, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Archived

Monitoring, RegularViolation 4012309 · Combined Uranium · Radionuclides and Revised Rad 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
4034395	January 24, 2024	Informal	State Violation/Reminder Notice
4034396	January 24, 2024	Informal	State Public Notification requested

Monitoring or reporting · Archived

Monitoring, RegularViolation 4012308 · Gross Alpha, Excl. Radon and U · Radionuclides and Revised Rad 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
4034395	January 24, 2024	Informal	State Violation/Reminder Notice
4034396	January 24, 2024	Informal	State Public Notification requested

Other or unclassified · Resolved

Public Notification Violation for NPDWR ViolationViolation 4012307 · Public Notice · Public Notice Rule and Revised PN Rule

Noncompliance period start July 17, 2023 · period end July 19, 2023 · first reported November 15, 2023 · EPA return-to-compliance field July 19, 2023

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4034391	July 19, 2023	Resolving	State Compliance achieved
4034389	September 8, 2023	Informal	State Violation/Reminder Notice
4034390	September 8, 2023	Informal	State Public Notification requested

Monitoring or reporting · Resolved

Monitoring of Treatment (SWTR-Filter)Violation 4012306 · Surface Water Treatment Rule · Surface Water Treatment Rule

Noncompliance period start June 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
4034394	July 16, 2023	Resolving	State Compliance achieved
4034386	July 17, 2023	Informal	State Violation/Reminder Notice
4034387	July 17, 2023	Informal	State Public Notification requested

Other or unclassified · Resolved

Public Notification Violation for NPDWR ViolationViolation 4012305 · Public Notice · Public Notice Rule and Revised PN Rule

Noncompliance period start April 18, 2023 · period end July 19, 2023 · first reported August 15, 2023 · EPA return-to-compliance field July 19, 2023

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4034384	June 8, 2023	Informal	State Violation/Reminder Notice
4034385	June 8, 2023	Informal	State Public Notification requested
4034392	July 19, 2023	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Lead Consumer NoticeViolation 4012304 · Lead and Copper Rule · Lead and Copper Rule

Noncompliance period start April 1, 2023 · period end April 24, 2023 · first reported May 15, 2023 · EPA return-to-compliance field April 24, 2023

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4034381	April 21, 2023	Informal	State Violation/Reminder Notice
4034382	April 21, 2023	Informal	State Public Notification requested
4034383	April 24, 2023	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring of Treatment (SWTR-Filter)Violation 4012303 · Surface Water Treatment Rule · Surface Water Treatment Rule

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

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4034393	November 11, 2022	Resolving	State Compliance achieved
4034378	November 16, 2022	Informal	State Violation/Reminder Notice
4034379	November 16, 2022	Informal	State Public Notification requested

Other or unclassified · Resolved

Public Notification Violation for NPDWR ViolationViolation 4012302 · Public Notice · Public Notice Rule and Revised PN Rule

Noncompliance period start July 22, 2022 · period end July 29, 2022 · first reported November 16, 2022 · EPA return-to-compliance field July 29, 2022

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4034375	July 29, 2022	Resolving	State Compliance achieved
4034376	August 25, 2022	Informal	State Violation/Reminder Notice
4034377	August 25, 2022	Informal	State Public Notification requested

Monitoring or reporting · Resolved

Monitoring of Treatment (SWTR-Filter)Violation 4012301 · Surface Water Treatment Rule · Surface Water Treatment Rule

Noncompliance period start April 1, 2022 · period end April 30, 2022 · first reported May 17, 2022 · EPA return-to-compliance field April 30, 2022

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4034373	May 12, 2022	Informal	State Violation/Reminder Notice
4034374	May 12, 2022	Informal	State Public Notification requested
4034380	June 6, 2022	Resolving	State Compliance achieved

Other or unclassified · Resolved

Public Notification Violation for NPDWR ViolationViolation 4012300 · Public Notice · Public Notice Rule and Revised PN Rule

Noncompliance period start January 23, 2022 · period end February 4, 2022 · first reported May 17, 2022 · EPA return-to-compliance field February 4, 2022

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4034370	February 4, 2022	Resolving	State Compliance achieved
4034371	March 8, 2022	Informal	State Violation/Reminder Notice
4034372	March 8, 2022	Informal	State Public Notification requested

Other or unclassified · Resolved

Public Notification Violation for NPDWR ViolationViolation 4012299 · Public Notice · Public Notice Rule and Revised PN Rule

Noncompliance period start October 25, 2021 · period end January 9, 2022 · first reported February 23, 2022 · EPA return-to-compliance field January 9, 2022

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4034366	December 3, 2021	Informal	State Violation/Reminder Notice
4034367	December 3, 2021	Informal	State Public Notification requested
4034369	January 9, 2022	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Failure to Filter (SWTR)Violation 4012298 · Surface Water Treatment Rule · Surface Water Treatment Rule

Noncompliance period start August 14, 2021 · period end April 8, 2025 · first reported December 2, 2021 · EPA return-to-compliance field April 8, 2025

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4034364	September 24, 2021	Informal	State Violation/Reminder Notice
4034365	September 24, 2021	Informal	State Public Notification requested
4034368	December 20, 2021	Formal	State Administrative/Compliance Order with penalty issued
4034438	April 8, 2025	Resolving	State Compliance achieved
4034439	July 7, 2025	Informal	State Public Notification received

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