CO0149160 · Colorado

BUTTERMILK MD

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

Violation records shown: 24
EPA health-based flag: 0
Health-based records unresolved in this snapshot: 0
Monitoring and reporting records: 12

Counties listed by EPA · Pitkin 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 12 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 61 days. The interval uses the reporting periods and dates on file.

Monitoring or reporting · Resolved

Monitoring of Treatment (SWTR-Filter)Violation 22800 · Surface Water Treatment Rule · 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

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
7651	June 12, 2026	Resolving	State Compliance achieved
7649	June 22, 2026	Informal	State Violation/Reminder Notice
7650	June 22, 2026	Informal	State Public Notification requested

Monitoring or reporting · Resolved

Report Sample Result/Fail Monitor (RTCR)Violation 22798 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start May 1, 2026 · period end June 12, 2026 · first reported September 15, 2026 · EPA return-to-compliance field June 12, 2026

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
7651	June 12, 2026	Resolving	State Compliance achieved
7649	June 22, 2026	Informal	State Violation/Reminder Notice
7650	June 22, 2026	Informal	State Public Notification requested

Other or unclassified · Unaddressed by formal action
Public Notification Violation without NPDWR ViolationViolation 22797 · Public Notice · Public Notice Rule and Revised PN Rule
Noncompliance period start April 30, 2026 · first reported September 15, 2026

2 linked actions

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
7647 May 22, 2026 Informal State Violation/Reminder Notice
7648 May 22, 2026 Informal State Public Notification requested

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
7647	May 22, 2026	Informal	State Violation/Reminder Notice
7648	May 22, 2026	Informal	State Public Notification requested

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 22799 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start April 1, 2026 · period end June 12, 2026 · first reported September 15, 2026 · EPA return-to-compliance field June 12, 2026

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
7651	June 12, 2026	Resolving	State Compliance achieved
7649	June 22, 2026	Informal	State Violation/Reminder Notice
7650	June 22, 2026	Informal	State Public Notification requested

Other or unclassified · Addressed by formal action

Public Notification Violation without NPDWR ViolationViolation 22796 · Public Notice · Public Notice Rule and Revised PN Rule

Noncompliance period start January 3, 2026 · first reported February 23, 2026

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
7642	January 23, 2026	Informal	State Violation/Reminder Notice
7645	March 30, 2026	Formal	State Administrative/Compliance Order without penalty issued

Other or unclassified · Addressed by formal action

Public Notification Violation without NPDWR ViolationViolation 22793 · Public Notice · Public Notice Rule and Revised PN Rule

Noncompliance period start October 5, 2025 · first reported November 17, 2025

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
7639	October 16, 2025	Informal	State Violation/Reminder Notice
7645	March 30, 2026	Formal	State Administrative/Compliance Order without penalty issued

Other or unclassified · Addressed by formal action

Public Notification Violation without NPDWR ViolationViolation 22791 · Public Notice · Public Notice Rule and Revised PN Rule

Noncompliance period start July 5, 2025 · first reported August 18, 2025

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
7636	July 14, 2025	Informal	State Violation/Reminder Notice
7645	March 30, 2026	Formal	State Administrative/Compliance Order without penalty issued

Other or unclassified · Resolved

Consumer Confidence Report Complete Failure to ReportViolation 22792 · Consumer Confidence Rule · Consumer Confidence Rule

Noncompliance period start July 1, 2025 · period end April 29, 2026 · first reported August 18, 2025 · EPA return-to-compliance field April 29, 2026

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
7637	July 24, 2025	Informal	State Violation/Reminder Notice
7638	July 24, 2025	Informal	State Public Notification requested
7645	March 30, 2026	Formal	State Administrative/Compliance Order without penalty issued
7646	April 29, 2026	Resolving	State Compliance achieved

Other or unclassified · Addressed by formal action

Public Notification Violation without NPDWR ViolationViolation 22790 · Public Notice · Public Notice Rule and Revised PN Rule

Noncompliance period start April 5, 2025 · first reported May 15, 2025

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
7635	April 25, 2025	Informal	State Violation/Reminder Notice
7645	March 30, 2026	Formal	State Administrative/Compliance Order without penalty issued

Other or unclassified · Addressed by formal action

Public Notification Violation without NPDWR ViolationViolation 22789 · Public Notice · Public Notice Rule and Revised PN Rule

Noncompliance period start January 5, 2025 · first reported May 15, 2025

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
7634	February 18, 2025	Informal	State Violation/Reminder Notice
7645	March 30, 2026	Formal	State Administrative/Compliance Order without penalty issued

Monitoring or reporting · Archived

Monitoring and Reporting (DBP)Violation 22795 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start January 1, 2025 · period end December 31, 2025 · first reported November 17, 2025 · EPA return-to-compliance field December 31, 2025

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
7640	October 21, 2025	Informal	State Violation/Reminder Notice
7641	October 21, 2025	Informal	State Public Notification requested
7645	March 30, 2026	Formal	State Administrative/Compliance Order without penalty issued

Monitoring or reporting · Archived

Monitoring and Reporting (DBP)Violation 22794 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start January 1, 2025 · period end December 31, 2025 · first reported November 17, 2025 · EPA return-to-compliance field December 31, 2025

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
7640	October 21, 2025	Informal	State Violation/Reminder Notice
7641	October 21, 2025	Informal	State Public Notification requested
7645	March 30, 2026	Formal	State Administrative/Compliance Order without penalty issued

Monitoring or reporting · Addressed by formal action

Lead Consumer NoticeViolation 22788 · Lead and Copper Rule · Lead and Copper Rule

Noncompliance period start January 1, 2025 · first reported February 18, 2025

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
7632	January 2, 2025	Informal	State Violation/Reminder Notice
7633	January 2, 2025	Informal	State Public Notification requested
7645	March 30, 2026	Formal	State Administrative/Compliance Order without penalty issued

Other or unclassified · Addressed by formal action

Public Notification Violation without NPDWR ViolationViolation 22787 · Public Notice · Public Notice Rule and Revised PN Rule

Noncompliance period start October 5, 2024 · first reported November 14, 2024

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
7630	October 25, 2024	Informal	State Violation/Reminder Notice
7645	March 30, 2026	Formal	State Administrative/Compliance Order without penalty issued

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 22784 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start July 1, 2024 · period end August 20, 2024 · first reported August 14, 2024 · EPA return-to-compliance field August 20, 2024

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
7623	August 13, 2024	Informal	State Violation/Reminder Notice
7624	August 13, 2024	Informal	State Public Notification requested
7625	August 20, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring of Treatment (SWTR-Filter)Violation 22783 · Surface Water Treatment Rule · Surface Water Treatment Rule

Noncompliance period start July 1, 2024 · period end July 31, 2024 · first reported August 14, 2024 · EPA return-to-compliance field July 31, 2024

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
7623	August 13, 2024	Informal	State Violation/Reminder Notice
7624	August 13, 2024	Informal	State Public Notification requested
7625	August 20, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Report Sample Result/Fail Monitor (RTCR)Violation 22782 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start July 1, 2024 · period end August 20, 2024 · first reported August 14, 2024 · EPA return-to-compliance field August 20, 2024

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
7623	August 13, 2024	Informal	State Violation/Reminder Notice
7624	August 13, 2024	Informal	State Public Notification requested
7625	August 20, 2024	Resolving	State Compliance achieved

Other or unclassified · Resolved
Public Notification Violation without NPDWR ViolationViolation 22781 · Public Notice · Public Notice Rule and Revised PN Rule
Noncompliance period start June 11, 2024 · period end June 28, 2024 · first reported August 14, 2024 · EPA return-to-compliance field June 28, 2024

2 linked actions

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
7620 June 26, 2024 Informal State Violation/Reminder Notice
7644 June 28, 2024 Resolving State Compliance achieved
Other or unclassified · Resolved
Public Notification Violation without NPDWR ViolationViolation 22780 · Public Notice · Public Notice Rule and Revised PN Rule
Noncompliance period start March 11, 2024 · period end June 28, 2024 · first reported May 16, 2024 · EPA return-to-compliance field June 28, 2024

2 linked actions

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
7619 March 25, 2024 Informal State Violation/Reminder Notice
7644 June 28, 2024 Resolving State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
7620	June 26, 2024	Informal	State Violation/Reminder Notice
7644	June 28, 2024	Resolving	State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
7619	March 25, 2024	Informal	State Violation/Reminder Notice
7644	June 28, 2024	Resolving	State Compliance achieved

Other or unclassified · Addressed by formal action

Public Notification Violation without NPDWR ViolationViolation 22779 · Public Notice · Public Notice Rule and Revised PN Rule

Noncompliance period start December 11, 2023 · first reported February 14, 2024

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
7618	January 11, 2024	Informal	State Violation/Reminder Notice
7645	March 30, 2026	Formal	State Administrative/Compliance Order without penalty issued

Other or unclassified · Addressed by formal action

Public Notification Violation without NPDWR ViolationViolation 22777 · Public Notice · Public Notice Rule and Revised PN Rule

Noncompliance period start September 11, 2023 · first reported November 15, 2023

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
7613	September 26, 2023	Informal	State Violation/Reminder Notice
7645	March 30, 2026	Formal	State Administrative/Compliance Order without penalty issued

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 22778 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts Rule

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

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
7614	October 17, 2023	Informal	State Violation/Reminder Notice
7615	October 17, 2023	Informal	State Public Notification requested
7631	September 4, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 22772 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start January 1, 2022 · period end December 31, 2022 · first reported November 16, 2022 · 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
7603	September 28, 2022	Informal	State Violation/Reminder Notice
7604	September 28, 2022	Informal	State Public Notification requested
7631	September 4, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 22771 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start January 1, 2022 · period end December 31, 2022 · first reported November 16, 2022 · 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
7603	September 28, 2022	Informal	State Violation/Reminder Notice
7604	September 28, 2022	Informal	State Public Notification requested
7631	September 4, 2024	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