CO0115342 · Colorado

HIDDEN VALLEY HOA WATER COMPANY

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

Violation records shown: 17
EPA health-based flag: 1
Health-based records unresolved in this snapshot: 0
Monitoring and reporting records: 13

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 17 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.

EPA health-based flag · Resolved

Treatment Technique No Certif. OperatorViolation 25 · Stage 1 Disinfectants and Disinfection Byproducts Rule · Stage 1 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start July 9, 2024 · period end August 8, 2024 · first reported August 14, 2024 · EPA return-to-compliance field August 8, 2024

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
55	July 9, 2024	Informal	State Violation/Reminder Notice
56	July 9, 2024	Informal	State Public Notification requested
59	August 6, 2024	Informal	State Public Notification received
60	August 8, 2024	Resolving	State Compliance achieved

Other or unclassified · Resolved

Consumer Confidence Report Complete Failure to ReportViolation 26 · Consumer Confidence Rule · Consumer Confidence Rule

Noncompliance period start July 1, 2024 · period end August 19, 2024 · first reported August 14, 2024 · EPA return-to-compliance field August 19, 2024

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
57	August 6, 2024	Informal	State Violation/Reminder Notice
58	August 6, 2024	Informal	State Public Notification requested
64	August 19, 2024	Resolving	State Compliance achieved
61	August 26, 2024	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 24 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start October 1, 2023 · period end November 20, 2023 · first reported February 14, 2024 · EPA return-to-compliance field November 20, 2023

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
52	November 17, 2023	Informal	State Violation/Reminder Notice
53	November 17, 2023	Informal	State Public Notification requested
54	November 20, 2023	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring of Treatment (SWTR-Filter)Violation 23 · Surface Water Treatment Rule · Surface Water Treatment Rule

Noncompliance period start October 1, 2023 · period end October 31, 2023 · first reported February 14, 2024 · EPA return-to-compliance field October 31, 2023

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
50	November 17, 2023	Informal	State Violation/Reminder Notice
51	November 17, 2023	Informal	State Public Notification requested
54	November 20, 2023	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 22 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start October 1, 2023 · period end October 31, 2023 · first reported February 14, 2024 · EPA return-to-compliance field October 31, 2023

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
48	November 17, 2023	Informal	State Violation/Reminder Notice
49	November 17, 2023	Informal	State Public Notification requested
54	November 20, 2023	Resolving	State Compliance achieved

Other or unclassified · Resolved

Consumer Confidence Report Complete Failure to ReportViolation 19 · Consumer Confidence Rule · Consumer Confidence Rule

Noncompliance period start July 1, 2023 · period end August 19, 2024 · first reported August 15, 2023 · EPA return-to-compliance field August 19, 2024

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
44	July 20, 2023	Informal	State Violation/Reminder Notice
45	July 20, 2023	Informal	State Public Notification requested
65	August 19, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 21 · 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
46	October 18, 2023	Informal	State Violation/Reminder Notice
47	October 18, 2023	Informal	State Public Notification requested
66	August 19, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 20 · TTHM · 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
46	October 18, 2023	Informal	State Violation/Reminder Notice
47	October 18, 2023	Informal	State Public Notification requested
66	August 19, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring of Treatment (SWTR-Filter)Violation 18 · Surface Water Treatment Rule · Surface Water Treatment Rule

Noncompliance period start September 1, 2022 · period end September 30, 2022 · first reported November 16, 2022 · EPA return-to-compliance field September 30, 2022

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
39	October 12, 2022	Informal	State Violation/Reminder Notice
40	October 12, 2022	Informal	State Public Notification requested
43	October 18, 2022	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 16 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start September 1, 2022 · period end September 30, 2022 · first reported November 16, 2022 · EPA return-to-compliance field September 30, 2022

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
37	October 12, 2022	Informal	State Violation/Reminder Notice
38	October 12, 2022	Informal	State Public Notification requested
43	October 18, 2022	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 17 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start July 1, 2022 · period end September 30, 2022 · first reported November 16, 2022 · EPA return-to-compliance field September 30, 2022

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
41	October 12, 2022	Informal	State Violation/Reminder Notice
42	October 12, 2022	Informal	State Public Notification requested
43	October 18, 2022	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring of Treatment (SWTR-Filter)Violation 14 · Surface Water Treatment Rule · Surface Water Treatment Rule

Noncompliance period start September 1, 2021 · period end September 30, 2021 · first reported December 2, 2021 · EPA return-to-compliance field September 30, 2021

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
30	October 15, 2021	Informal	State Violation/Reminder Notice
31	October 15, 2021	Informal	State Public Notification requested
34	October 28, 2021	Resolving	State Compliance achieved
36	June 30, 2022	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 13 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start September 1, 2021 · period end September 30, 2021 · first reported December 2, 2021 · EPA return-to-compliance field September 30, 2021

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
28	October 15, 2021	Informal	State Violation/Reminder Notice
29	October 15, 2021	Informal	State Public Notification requested
34	October 28, 2021	Resolving	State Compliance achieved
36	June 30, 2022	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 15 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start July 1, 2021 · period end September 30, 2021 · first reported December 2, 2021 · EPA return-to-compliance field September 30, 2021

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
32	October 15, 2021	Informal	State Violation/Reminder Notice
33	October 15, 2021	Informal	State Public Notification requested
34	October 28, 2021	Resolving	State Compliance achieved
36	June 30, 2022	Informal	State Public Notification received

Monitoring or reporting · Resolved

Lead Consumer NoticeViolation 12 · Lead and Copper Rule · Lead and Copper Rule

Noncompliance period start January 1, 2021 · period end January 6, 2021 · first reported February 16, 2021 · EPA return-to-compliance field January 6, 2021

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
24	January 6, 2021	Informal	State Violation/Reminder Notice
25	January 6, 2021	Informal	State Public Notification requested
26	January 6, 2021	Resolving	State Compliance achieved

Other or unclassified · Resolved

Consumer Confidence Report Complete Failure to ReportViolation 7 · Consumer Confidence Rule · Consumer Confidence Rule

Noncompliance period start July 1, 2020 · period end June 16, 2021 · first reported August 17, 2020 · EPA return-to-compliance field June 16, 2021

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
13	August 5, 2020	Informal	State Violation/Reminder Notice
14	August 5, 2020	Informal	State Public Notification requested
27	June 16, 2021	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Lead Consumer NoticeViolation 11 · Lead and Copper Rule · Lead and Copper Rule

Noncompliance period start April 1, 2020 · period end April 6, 2020 · first reported February 16, 2021 · EPA return-to-compliance field April 6, 2020

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
23	April 6, 2020	Resolving	State Compliance achieved
21	December 10, 2020	Informal	State Violation/Reminder Notice
22	December 10, 2020	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