NM3501821 · New Mexico

ENSENADA MDWCA

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

Violation records shown: 26
EPA health-based flag: 6
Health-based records unresolved in this snapshot: 6
Monitoring and reporting records: 16

Counties listed by EPA · Rio Arriba County, New Mexico

Find the utility’s annual water quality report. For current advisories, check the utility or local drinking-water authority.

Violations and what followed

Among 15 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 · Unaddressed by formal action

Failure To Address DeficiencyViolation 50652 · Groundwater Rule · Ground Water Rule

Noncompliance period start January 3, 2026 · first reported June 16, 2026

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
112	February 9, 2026	Informal	State Violation/Reminder Notice
113	February 9, 2026	Informal	State Public Notification requested

EPA health-based flag · Unaddressed by formal action

Failure To Address DeficiencyViolation 50651 · Groundwater Rule · Ground Water Rule

Noncompliance period start January 3, 2026 · first reported June 16, 2026

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
112	February 9, 2026	Informal	State Violation/Reminder Notice
113	February 9, 2026	Informal	State Public Notification requested

EPA health-based flag · Unaddressed by formal action

Failure To Address DeficiencyViolation 50650 · Groundwater Rule · Ground Water Rule

Noncompliance period start January 3, 2026 · first reported June 16, 2026

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
112	February 9, 2026	Informal	State Violation/Reminder Notice
113	February 9, 2026	Informal	State Public Notification requested

EPA health-based flag · Unaddressed by formal action

Failure To Address DeficiencyViolation 50649 · Groundwater Rule · Ground Water Rule

Noncompliance period start January 3, 2026 · first reported June 16, 2026

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
112	February 9, 2026	Informal	State Violation/Reminder Notice
113	February 9, 2026	Informal	State Public Notification requested

EPA health-based flag · Unaddressed by formal action

Failure To Address DeficiencyViolation 50648 · Groundwater Rule · Ground Water Rule

Noncompliance period start January 3, 2026 · first reported June 16, 2026

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
112	February 9, 2026	Informal	State Violation/Reminder Notice
113	February 9, 2026	Informal	State Public Notification requested

EPA health-based flag · Unaddressed by formal action

Failure To Address DeficiencyViolation 50647 · Groundwater Rule · Ground Water Rule

Noncompliance period start January 3, 2026 · first reported June 16, 2026

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
112	February 9, 2026	Informal	State Violation/Reminder Notice
113	February 9, 2026	Informal	State Public Notification requested

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 50655 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start March 1, 2025 · period end March 31, 2025 · first reported June 16, 2026 · 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
118	June 16, 2025	Resolving	State Compliance achieved
116	May 11, 2026	Informal	State Violation/Reminder Notice
117	May 11, 2026	Informal	State Public Notification requested

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 50656 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start February 1, 2025 · period end February 28, 2025 · first reported June 16, 2026 · EPA return-to-compliance field February 28, 2025

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
118	June 16, 2025	Resolving	State Compliance achieved
116	May 11, 2026	Informal	State Violation/Reminder Notice
117	May 11, 2026	Informal	State Public Notification requested

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 50646 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start February 1, 2025 · period end February 28, 2025 · first reported June 25, 2025 · EPA return-to-compliance field February 28, 2025

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
111	March 25, 2025	Resolving	State Compliance achieved
109	June 10, 2025	Informal	State Violation/Reminder Notice
110	June 10, 2025	Informal	State Public Notification requested
121	June 8, 2026	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 50657 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start January 1, 2025 · period end January 31, 2025 · first reported June 16, 2026 · EPA return-to-compliance field January 31, 2025

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
118	June 16, 2025	Resolving	State Compliance achieved
116	May 11, 2026	Informal	State Violation/Reminder Notice
117	May 11, 2026	Informal	State Public Notification requested

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 50645 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start January 1, 2025 · period end January 31, 2025 · first reported June 25, 2025 · EPA return-to-compliance field January 31, 2025

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
108	March 25, 2025	Resolving	State Compliance achieved
106	June 9, 2025	Informal	State Violation/Reminder Notice
107	June 9, 2025	Informal	State Public Notification requested
122	June 8, 2026	Informal	State Public Notification received

Other or unclassified · Resolved
Consumer Confidence Report Complete Failure to ReportViolation 50644 · Consumer Confidence Rule · Consumer Confidence Rule
Noncompliance period start July 1, 2021 · period end August 18, 2021 · first reported September 27, 2021 · EPA return-to-compliance field August 18, 2021

2 linked actions

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
93 August 18, 2021 Informal State Violation/Reminder Notice
94 August 18, 2021 Resolving State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
93	August 18, 2021	Informal	State Violation/Reminder Notice
94	August 18, 2021	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 50638 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start April 1, 2017 · period end May 10, 2017 · first reported March 25, 2021 · EPA return-to-compliance field May 10, 2017

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
95	May 10, 2017	Resolving	State Compliance achieved
90	February 24, 2021	Informal	State Violation/Reminder Notice
91	February 24, 2021	Informal	State Public Notification requested
92	March 24, 2021	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 50640 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start January 1, 2017 · period end March 31, 2017 · first reported March 25, 2021 · EPA return-to-compliance field March 31, 2017

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
95	May 10, 2017	Resolving	State Compliance achieved
90	February 24, 2021	Informal	State Violation/Reminder Notice
91	February 24, 2021	Informal	State Public Notification requested
92	March 24, 2021	Informal	State Public Notification received

Monitoring or reporting · Archived
Monitoring and Reporting (DBP)Violation 50639 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts Rule
Noncompliance period start January 1, 2017 · period end March 31, 2017 · first reported March 25, 2021 · EPA return-to-compliance field March 31, 2017
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring and Reporting (DBP)Violation 50637 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts Rule
Noncompliance period start January 1, 2017 · period end March 31, 2017 · first reported March 25, 2021 · EPA return-to-compliance field March 31, 2017
No linked action row appears in the records shown.
Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 50658 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts Rule
Noncompliance period start October 1, 2016 · period end October 31, 2016 · first reported June 16, 2026 · EPA return-to-compliance field October 31, 2016

2 linked actions

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
120 June 17, 2017 Resolving State Compliance achieved
119 May 11, 2026 Informal State Violation/Reminder Notice

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
120	June 17, 2017	Resolving	State Compliance achieved
119	May 11, 2026	Informal	State Violation/Reminder Notice

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 50643 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start October 1, 2016 · period end December 31, 2016 · first reported March 25, 2021 · EPA return-to-compliance field December 31, 2016

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
95	May 10, 2017	Resolving	State Compliance achieved
90	February 24, 2021	Informal	State Violation/Reminder Notice
91	February 24, 2021	Informal	State Public Notification requested
92	March 24, 2021	Informal	State Public Notification received

Monitoring or reporting · Archived
Monitoring and Reporting (DBP)Violation 50636 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts Rule
Noncompliance period start October 1, 2016 · period end December 31, 2016 · first reported March 25, 2021 · EPA return-to-compliance field December 31, 2016
No linked action row appears in the records shown.
Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 50659 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts Rule
Noncompliance period start August 1, 2016 · period end August 31, 2016 · first reported June 16, 2026 · EPA return-to-compliance field August 31, 2016

2 linked actions

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
120 June 17, 2017 Resolving State Compliance achieved
119 May 11, 2026 Informal State Violation/Reminder Notice
Monitoring or reporting · Archived
Monitoring and Reporting (DBP)Violation 50642 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts Rule
Noncompliance period start July 1, 2016 · period end September 30, 2016 · first reported March 25, 2021 · EPA return-to-compliance field September 30, 2016
No linked action row appears in the records shown.

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
120	June 17, 2017	Resolving	State Compliance achieved
119	May 11, 2026	Informal	State Violation/Reminder Notice

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 50641 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start July 1, 2016 · period end September 30, 2016 · first reported March 25, 2021 · EPA return-to-compliance field September 30, 2016

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
95	May 10, 2017	Resolving	State Compliance achieved
90	February 24, 2021	Informal	State Violation/Reminder Notice
91	February 24, 2021	Informal	State Public Notification requested
92	March 24, 2021	Informal	State Public Notification received

Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 50660 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts Rule
Noncompliance period start June 1, 2016 · period end June 30, 2016 · first reported June 16, 2026 · EPA return-to-compliance field June 30, 2016

2 linked actions

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
120 June 17, 2017 Resolving State Compliance achieved
119 May 11, 2026 Informal State Violation/Reminder Notice
Other or unclassified · Resolved
Consumer Confidence Report Complete Failure to ReportViolation 50653 · Consumer Confidence Rule · Consumer Confidence Rule
Noncompliance period start July 1, 2015 · period end August 17, 2016 · first reported March 31, 2026 · EPA return-to-compliance field August 17, 2016

2 linked actions

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
115 August 17, 2016 Resolving State Compliance achieved
114 February 24, 2026 Informal State Violation/Reminder Notice
Other or unclassified · Resolved
Consumer Confidence Report Complete Failure to ReportViolation 50654 · Consumer Confidence Rule · Consumer Confidence Rule
Noncompliance period start July 1, 2014 · period end August 17, 2016 · first reported March 31, 2026 · EPA return-to-compliance field August 17, 2016

2 linked actions

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
115 August 17, 2016 Resolving State Compliance achieved
114 February 24, 2026 Informal State Violation/Reminder Notice
Other or unclassified · Unaddressed by formal action
Consumer Confidence Report Complete Failure to ReportViolation 104 · Consumer Confidence Rule · Consumer Confidence Rule
Noncompliance period start October 19, 1999 · first reported November 15, 2005

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
2E00 August 2, 2000 Informal Federal issued Formal Notice of Violation

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
120	June 17, 2017	Resolving	State Compliance achieved
119	May 11, 2026	Informal	State Violation/Reminder Notice

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
115	August 17, 2016	Resolving	State Compliance achieved
114	February 24, 2026	Informal	State Violation/Reminder Notice

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
115	August 17, 2016	Resolving	State Compliance achieved
114	February 24, 2026	Informal	State Violation/Reminder Notice

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
2E00	August 2, 2000	Informal	Federal issued Formal Notice of Violation

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