CO0215538 · Colorado

MAD DOG WC

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

Violation records shown: 9
EPA health-based flag: 2
Health-based records unresolved in this snapshot: 0
Monitoring and reporting records: 7

Counties listed by EPA · Delta 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 9 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 4015831 · 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
4044415	September 18, 2025	Resolving	State Compliance achieved
4044413	September 19, 2025	Informal	State Violation/Reminder Notice
4044414	September 19, 2025	Informal	State Public Notification requested

Monitoring or reporting · Resolved

Monitoring of Treatment (SWTR-Filter)Violation 4015830 · Surface Water Treatment Rule · 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
4044415	September 18, 2025	Resolving	State Compliance achieved
4044411	September 19, 2025	Informal	State Violation/Reminder Notice
4044412	September 19, 2025	Informal	State Public Notification requested

Monitoring or reporting · Resolved

Water Quality Parameter M/RViolation 4015829 · Lead and Copper Rule · Lead and Copper Rule

Noncompliance period start January 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
4044407	July 28, 2023	Informal	State Violation/Reminder Notice
4044408	July 28, 2023	Informal	State Public Notification requested
4044409	August 16, 2023	Resolving	State Compliance achieved

EPA health-based flag · Resolved

OCCT/SOWT Treatment Installation/DemonstrationViolation 4015828 · Lead and Copper Rule · Lead and Copper Rule

Noncompliance period start October 28, 2022 · period end May 2, 2023 · first reported May 15, 2023 · EPA return-to-compliance field May 2, 2023

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4044403	March 28, 2023	Informal	State Violation/Reminder Notice
4044404	March 28, 2023	Informal	State Public Notification requested
4044405	April 1, 2023	Informal	State Public Notification received
4044406	May 2, 2023	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 4015827 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts Rule

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

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4044400	November 14, 2022	Resolving	State Compliance achieved
4044401	December 12, 2022	Informal	State Violation/Reminder Notice
4044402	December 12, 2022	Informal	State Public Notification requested

Monitoring or reporting · Resolved

Monitoring of Treatment (SWTR-Filter)Violation 4015826 · 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
4044400	November 14, 2022	Resolving	State Compliance achieved
4044398	December 6, 2022	Informal	State Violation/Reminder Notice
4044399	December 6, 2022	Informal	State Public Notification requested

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 4015825 · Revised Total Coliform Rule · Revised Total Coliform 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
4044400	November 14, 2022	Resolving	State Compliance achieved
4044396	December 6, 2022	Informal	State Violation/Reminder Notice
4044397	December 6, 2022	Informal	State Public Notification requested

Monitoring or reporting · Resolved

Follow-up Or Routine LCR Tap M/RViolation 4015823 · Lead and Copper Rule · Lead and Copper Rule

Noncompliance period start July 1, 2021 · period end December 29, 2021 · first reported August 18, 2021 · EPA return-to-compliance field December 29, 2021

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4044391	August 5, 2021	Informal	State Violation/Reminder Notice
4044392	August 5, 2021	Informal	State Public Notification requested
4044410	December 29, 2021	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Treatment Technique No Certif. OperatorViolation 4015822 · Stage 1 Disinfectants and Disinfection Byproducts Rule · Stage 1 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start April 1, 2021 · period end April 7, 2021 · first reported May 17, 2021 · EPA return-to-compliance field April 7, 2021

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4044387	April 6, 2021	Informal	State Violation/Reminder Notice
4044388	April 6, 2021	Informal	State Public Notification requested
4044390	April 7, 2021	Resolving	State Compliance achieved
4044389	April 15, 2021	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