CO0145570 · Colorado

RIVERSIDE WC

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

Violation records shown: 31
EPA health-based flag: 23
Health-based records unresolved in this snapshot: 0
Monitoring and reporting records: 6

Counties listed by EPA · Otero 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 8 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 78.5 days. The interval uses the reporting periods and dates on file.

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 4010895 · Bromate · 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
4037980	June 12, 2026	Resolving	State Compliance achieved
4037978	June 15, 2026	Informal	State Violation/Reminder Notice
4037979	June 15, 2026	Informal	State Public Notification requested

EPA health-based flag · Archived

Maximum Contaminant Level Violation, AverageViolation 4010894 · Combined Radium (-226 and -228) · Radionuclides and Revised Rad Rule

Noncompliance period start April 1, 2026 · period end June 30, 2026 · first reported May 27, 2026 · EPA return-to-compliance field June 30, 2026

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4037924	May 31, 2022	Formal	State Administrative/Compliance Order without penalty issued
4037930	May 31, 2022	Informal	State Public Notification requested
4037977	May 8, 2026	Informal	State Violation/Reminder Notice

EPA health-based flag · Archived

Maximum Contaminant Level Violation, AverageViolation 4010893 · Combined Radium (-226 and -228) · Radionuclides and Revised Rad Rule

Noncompliance period start January 1, 2026 · period end March 31, 2026 · first reported May 27, 2026 · EPA return-to-compliance field March 31, 2026

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4037924	May 31, 2022	Formal	State Administrative/Compliance Order without penalty issued
4037930	May 31, 2022	Informal	State Public Notification requested
4037975	April 20, 2026	Informal	State Violation/Reminder Notice

Monitoring or reporting · Resolved

Monitoring, RegularViolation 4010892 · Combined Radium (-226 and -228) · Radionuclides and Revised Rad Rule

Noncompliance period start January 1, 2026 · period end March 31, 2026 · first reported May 27, 2026 · EPA return-to-compliance field March 31, 2026

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4037973	April 14, 2026	Informal	State Violation/Reminder Notice
4037974	April 14, 2026	Informal	State Public Notification requested
4037976	April 27, 2026	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 4010891 · Bromate · Stage 1 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start January 1, 2026 · period end March 27, 2026 · first reported May 27, 2026 · EPA return-to-compliance field March 27, 2026

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4037970	March 12, 2026	Informal	State Violation/Reminder Notice
4037971	March 12, 2026	Informal	State Public Notification requested
4037972	March 27, 2026	Resolving	State Compliance achieved

EPA health-based flag · Archived

Maximum Contaminant Level Violation, AverageViolation 4010889 · Combined Radium (-226 and -228) · Radionuclides and Revised Rad Rule

Noncompliance period start October 1, 2025 · period end December 31, 2025 · first reported February 23, 2026 · 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
4037924	May 31, 2022	Formal	State Administrative/Compliance Order without penalty issued
4037930	May 31, 2022	Informal	State Public Notification requested
4037966	December 2, 2025	Informal	State Violation/Reminder Notice

EPA health-based flag · Archived

Maximum Contaminant Level Violation, AverageViolation 4010888 · Combined Radium (-226 and -228) · Radionuclides and Revised Rad Rule

Noncompliance period start July 1, 2025 · period end September 30, 2025 · first reported November 17, 2025 · EPA return-to-compliance field September 30, 2025

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4037924	May 31, 2022	Formal	State Administrative/Compliance Order without penalty issued
4037930	May 31, 2022	Informal	State Public Notification requested
4037965	September 24, 2025	Informal	State Violation/Reminder Notice

EPA health-based flag · Archived

Maximum Contaminant Level Violation, AverageViolation 4010887 · Combined Radium (-226 and -228) · Radionuclides and Revised Rad Rule

Noncompliance period start April 1, 2025 · period end June 30, 2025 · first reported August 18, 2025 · EPA return-to-compliance field June 30, 2025

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4037924	May 31, 2022	Formal	State Administrative/Compliance Order without penalty issued
4037930	May 31, 2022	Informal	State Public Notification requested
4037962	May 21, 2025	Informal	State Violation/Reminder Notice

EPA health-based flag · Archived

Maximum Contaminant Level Violation, AverageViolation 4010886 · Combined Radium (-226 and -228) · Radionuclides and Revised Rad Rule

Noncompliance period start January 1, 2025 · period end March 31, 2025 · first reported May 15, 2025 · EPA return-to-compliance field March 31, 2025

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4037924	May 31, 2022	Formal	State Administrative/Compliance Order without penalty issued
4037930	May 31, 2022	Informal	State Public Notification requested
4037960	March 10, 2025	Informal	State Violation/Reminder Notice

EPA health-based flag · Archived

Maximum Contaminant Level Violation, AverageViolation 4010885 · Combined Radium (-226 and -228) · Radionuclides and Revised Rad Rule

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

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4037924	May 31, 2022	Formal	State Administrative/Compliance Order without penalty issued
4037930	May 31, 2022	Informal	State Public Notification requested
4037959	December 19, 2024	Informal	State Violation/Reminder Notice

EPA health-based flag · Archived

Maximum Contaminant Level Violation, AverageViolation 4010884 · Combined Radium (-226 and -228) · Radionuclides and Revised Rad 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
4037924	May 31, 2022	Formal	State Administrative/Compliance Order without penalty issued
4037930	May 31, 2022	Informal	State Public Notification requested
4037957	September 16, 2024	Informal	State Violation/Reminder Notice

EPA health-based flag · Archived

Maximum Contaminant Level Violation, AverageViolation 4010883 · 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

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4037924	May 31, 2022	Formal	State Administrative/Compliance Order without penalty issued
4037930	May 31, 2022	Informal	State Public Notification requested
4037956	July 18, 2024	Informal	State Violation/Reminder Notice

EPA health-based flag · Archived

Maximum Contaminant Level Violation, AverageViolation 4010882 · Combined Radium (-226 and -228) · Radionuclides and Revised Rad Rule

Noncompliance period start January 1, 2024 · period end March 31, 2024 · first reported May 16, 2024 · EPA return-to-compliance field March 31, 2024

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4037924	May 31, 2022	Formal	State Administrative/Compliance Order without penalty issued
4037930	May 31, 2022	Informal	State Public Notification requested
4037954	February 19, 2024	Informal	State Violation/Reminder Notice

EPA health-based flag · Archived

Maximum Contaminant Level Violation, AverageViolation 4010881 · Combined Radium (-226 and -228) · 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

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4037924	May 31, 2022	Formal	State Administrative/Compliance Order without penalty issued
4037925	May 31, 2022	Informal	State Violation/Reminder Notice
4037930	May 31, 2022	Informal	State Public Notification requested

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 4010878 · Bromate · Stage 1 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start July 1, 2023 · period end September 30, 2023 · first reported November 15, 2023 · EPA return-to-compliance field September 30, 2023

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4037955	October 12, 2023	Resolving	State Compliance achieved
4037947	October 17, 2023	Informal	State Violation/Reminder Notice
4037948	October 17, 2023	Informal	State Public Notification requested

EPA health-based flag · Archived

Maximum Contaminant Level Violation, AverageViolation 4010877 · Combined Radium (-226 and -228) · Radionuclides and Revised Rad Rule

Noncompliance period start July 1, 2023 · period end September 30, 2023 · first reported November 15, 2023 · EPA return-to-compliance field September 30, 2023

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4037924	May 31, 2022	Formal	State Administrative/Compliance Order without penalty issued
4037930	May 31, 2022	Informal	State Public Notification requested
4037946	September 28, 2023	Informal	State Violation/Reminder Notice

Other or unclassified · Resolved

Public Notification Violation for NPDWR ViolationViolation 4010875 · Public Notice · Public Notice Rule and Revised PN Rule

Noncompliance period start July 1, 2023 · period end July 3, 2023 · first reported August 15, 2023 · EPA return-to-compliance field July 3, 2023

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4037924	May 31, 2022	Formal	State Administrative/Compliance Order without penalty issued
4037942	July 3, 2023	Resolving	State Compliance achieved
4037940	July 19, 2023	Informal	State Violation/Reminder Notice

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 4010876 · Bromate · Stage 1 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start April 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
4037945	July 9, 2023	Resolving	State Compliance achieved
4037943	July 20, 2023	Informal	State Violation/Reminder Notice
4037944	July 20, 2023	Informal	State Public Notification requested

EPA health-based flag · Archived

Maximum Contaminant Level Violation, AverageViolation 4010874 · Combined Radium (-226 and -228) · Radionuclides and Revised Rad Rule

Noncompliance period start April 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
4037924	May 31, 2022	Formal	State Administrative/Compliance Order without penalty issued
4037930	May 31, 2022	Informal	State Public Notification requested
4037939	April 10, 2023	Informal	State Violation/Reminder Notice

Other or unclassified · Resolved
Public Notification Violation for NPDWR ViolationViolation 4010873 · Public Notice · Public Notice Rule and Revised PN Rule
Noncompliance period start April 1, 2023 · period end April 18, 2023 · first reported May 15, 2023 · EPA return-to-compliance field April 18, 2023

2 linked actions

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
4037925 May 31, 2022 Informal State Violation/Reminder Notice
4037937 April 18, 2023 Resolving State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4037925	May 31, 2022	Informal	State Violation/Reminder Notice
4037937	April 18, 2023	Resolving	State Compliance achieved

EPA health-based flag · Archived

Maximum Contaminant Level Violation, AverageViolation 4010872 · Combined Radium (-226 and -228) · Radionuclides and Revised Rad Rule

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

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4037924	May 31, 2022	Formal	State Administrative/Compliance Order without penalty issued
4037930	May 31, 2022	Informal	State Public Notification requested
4037935	February 22, 2023	Informal	State Violation/Reminder Notice

Monitoring or reporting · Resolved

Lead Consumer NoticeViolation 4010871 · Lead and Copper Rule · Lead and Copper Rule

Noncompliance period start January 1, 2023 · period end February 15, 2023 · first reported February 14, 2023 · EPA return-to-compliance field February 15, 2023

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4037932	January 30, 2023	Informal	State Violation/Reminder Notice
4037933	January 30, 2023	Informal	State Public Notification requested
4037934	February 15, 2023	Resolving	State Compliance achieved

EPA health-based flag · Archived

Maximum Contaminant Level Violation, AverageViolation 4010870 · Combined Radium (-226 and -228) · Radionuclides and Revised Rad Rule

Noncompliance period start October 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
4037924	May 31, 2022	Formal	State Administrative/Compliance Order without penalty issued
4037930	May 31, 2022	Informal	State Public Notification requested
4037931	January 10, 2023	Informal	State Violation/Reminder Notice

EPA health-based flag · Archived

Maximum Contaminant Level Violation, AverageViolation 4010869 · Combined Radium (-226 and -228) · Radionuclides and Revised Rad 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
4037924	May 31, 2022	Formal	State Administrative/Compliance Order without penalty issued
4037930	May 31, 2022	Informal	State Public Notification requested
4037929	August 29, 2022	Informal	State Violation/Reminder Notice

EPA health-based flag · Archived

Maximum Contaminant Level Violation, AverageViolation 4010868 · Combined Radium (-226 and -228) · Radionuclides and Revised Rad Rule

Noncompliance period start April 1, 2022 · period end June 30, 2022 · first reported August 15, 2022 · EPA return-to-compliance field June 30, 2022

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4037924	May 31, 2022	Formal	State Administrative/Compliance Order without penalty issued
4037925	May 31, 2022	Informal	State Violation/Reminder Notice
4037930	May 31, 2022	Informal	State Public Notification requested
4037927	July 7, 2022	Informal	State Public Notification received

EPA health-based flag · Archived

Maximum Contaminant Level Violation, AverageViolation 4010867 · Combined Radium (-226 and -228) · Radionuclides and Revised Rad Rule

Noncompliance period start January 1, 2022 · period end March 31, 2022 · first reported February 23, 2022 · EPA return-to-compliance field March 31, 2022

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4037812	January 4, 2018	Formal	State Administrative/Compliance Order without penalty issued
4037820	May 31, 2018	Informal	State Public Notification requested
4037923	February 14, 2022	Informal	State Violation/Reminder Notice
4037924	May 31, 2022	Formal	State Administrative/Compliance Order without penalty issued
4037927	July 7, 2022	Informal	State Public Notification received

EPA health-based flag · Archived

Maximum Contaminant Level Violation, AverageViolation 4010866 · Combined Radium (-226 and -228) · Radionuclides and Revised Rad Rule

Noncompliance period start October 1, 2021 · period end December 31, 2021 · first reported February 23, 2022 · EPA return-to-compliance field December 31, 2021

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4037812	January 4, 2018	Formal	State Administrative/Compliance Order without penalty issued
4037820	May 31, 2018	Informal	State Public Notification requested
4037922	December 16, 2021	Informal	State Violation/Reminder Notice
4037924	May 31, 2022	Formal	State Administrative/Compliance Order without penalty issued
4037927	July 7, 2022	Informal	State Public Notification received

EPA health-based flag · Archived

Maximum Contaminant Level Violation, AverageViolation 4010865 · Combined Radium (-226 and -228) · Radionuclides and Revised Rad 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

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4037812	January 4, 2018	Formal	State Administrative/Compliance Order without penalty issued
4037820	May 31, 2018	Informal	State Public Notification requested
4037921	September 30, 2021	Informal	State Violation/Reminder Notice
4037924	May 31, 2022	Formal	State Administrative/Compliance Order without penalty issued
4037927	July 7, 2022	Informal	State Public Notification received

EPA health-based flag · Archived

Maximum Contaminant Level Violation, AverageViolation 4010864 · Combined Radium (-226 and -228) · Radionuclides and Revised Rad Rule

Noncompliance period start April 1, 2021 · period end June 30, 2021 · first reported August 18, 2021 · EPA return-to-compliance field June 30, 2021

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4037812	January 4, 2018	Formal	State Administrative/Compliance Order without penalty issued
4037820	May 31, 2018	Informal	State Public Notification requested
4037920	May 20, 2021	Informal	State Violation/Reminder Notice
4037924	May 31, 2022	Formal	State Administrative/Compliance Order without penalty issued
4037927	July 7, 2022	Informal	State Public Notification received

EPA health-based flag · Archived

Maximum Contaminant Level Violation, AverageViolation 4010863 · Combined Radium (-226 and -228) · Radionuclides and Revised Rad Rule

Noncompliance period start January 1, 2021 · period end March 31, 2021 · first reported February 16, 2021 · EPA return-to-compliance field March 31, 2021

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4037812	January 4, 2018	Formal	State Administrative/Compliance Order without penalty issued
4037820	May 31, 2018	Informal	State Public Notification requested
4037918	February 10, 2021	Informal	State Violation/Reminder Notice
4037924	May 31, 2022	Formal	State Administrative/Compliance Order without penalty issued
4037927	July 7, 2022	Informal	State Public Notification received

EPA health-based flag · Archived

Maximum Contaminant Level Violation, AverageViolation 4010862 · Combined Radium (-226 and -228) · Radionuclides and Revised Rad Rule

Noncompliance period start October 1, 2020 · period end December 31, 2020 · first reported February 16, 2021 · EPA return-to-compliance field December 31, 2020

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4037812	January 4, 2018	Formal	State Administrative/Compliance Order without penalty issued
4037820	May 31, 2018	Informal	State Public Notification requested
4037917	December 18, 2020	Informal	State Violation/Reminder Notice
4037924	May 31, 2022	Formal	State Administrative/Compliance Order without penalty issued
4037927	July 7, 2022	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