NM3500121 · New Mexico

CHAMITA MDWCA

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

Violation records shown: 28
EPA health-based flag: 4
Health-based records unresolved in this snapshot: 0
Monitoring and reporting records: 11

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 26 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 333.5 days. The interval uses the reporting periods and dates on file.

Monitoring or reporting · Unaddressed by formal action

Follow-up Or Routine LCR Tap M/RViolation 1250 · Lead and Copper Rule · Lead and Copper Rule

Noncompliance period start October 1, 2025 · first reported March 31, 2026

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
57618	January 12, 2026	Informal	State Violation/Reminder Notice
57619	January 12, 2026	Informal	State Public Notification requested

Other or unclassified · Resolved
Public Notification Violation for NPDWR ViolationViolation 1252 · Public Notice · Public Notice Rule and Revised PN Rule
Noncompliance period start August 28, 2025 · period end April 22, 2026 · first reported June 16, 2026 · EPA return-to-compliance field April 22, 2026

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
57620 April 22, 2026 Resolving State Compliance achieved
Other or unclassified · Resolved
Public Notification Violation for NPDWR ViolationViolation 1253 · Public Notice · Public Notice Rule and Revised PN Rule
Noncompliance period start July 25, 2025 · period end April 22, 2026 · first reported June 16, 2026 · EPA return-to-compliance field April 22, 2026

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
57620 April 22, 2026 Resolving State Compliance achieved
Other or unclassified · Resolved
Public Notification Violation for NPDWR ViolationViolation 1254 · Public Notice · Public Notice Rule and Revised PN Rule
Noncompliance period start March 7, 2025 · period end April 22, 2026 · first reported June 16, 2026 · EPA return-to-compliance field April 22, 2026

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
57620 April 22, 2026 Resolving State Compliance achieved
Other or unclassified · Resolved
Consumer Confidence Report Inadequate ReportingViolation 1249 · Consumer Confidence Rule · Consumer Confidence Rule
Noncompliance period start October 1, 2024 · period end October 29, 2024 · first reported March 31, 2025 · EPA return-to-compliance field October 29, 2024

2 linked actions

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
57615 October 28, 2024 Informal State Violation/Reminder Notice
57617 October 29, 2024 Resolving State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
57620	April 22, 2026	Resolving	State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
57620	April 22, 2026	Resolving	State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
57620	April 22, 2026	Resolving	State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
57615	October 28, 2024	Informal	State Violation/Reminder Notice
57617	October 29, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 1248 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start June 1, 2024 · period end June 30, 2024 · first reported March 31, 2025 · 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
57614	July 1, 2024	Resolving	State Compliance achieved
57612	August 27, 2024	Informal	State Violation/Reminder Notice
57613	August 27, 2024	Informal	State Public Notification requested

EPA health-based flag · Resolved

Failure To Address DeficiencyViolation 1247 · Groundwater Rule · Ground Water Rule

Noncompliance period start May 2, 2024 · period end July 25, 2024 · first reported August 16, 2024 · EPA return-to-compliance field July 25, 2024

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
57607	July 24, 2024	Informal	State Violation/Reminder Notice
57608	July 24, 2024	Informal	State Public Notification requested
57609	July 25, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 1246 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start April 1, 2024 · period end June 30, 2024 · first reported August 16, 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
57605	July 24, 2024	Informal	State Violation/Reminder Notice
57606	July 24, 2024	Informal	State Public Notification requested
57611	August 13, 2024	Resolving	State Compliance achieved

Other or unclassified · Resolved

Failure to Consult with StateViolation 1245 · Groundwater Rule · Ground Water Rule

Noncompliance period start February 5, 2024 · period end July 25, 2024 · first reported May 2, 2024 · EPA return-to-compliance field July 25, 2024

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
57603	March 6, 2024	Informal	State Violation/Reminder Notice
57604	March 6, 2024	Informal	State Public Notification requested
57610	July 25, 2024	Resolving	State Compliance achieved

Other or unclassified · Resolved
Public Notification Violation for NPDWR ViolationViolation 1251 · Public Notice · Public Notice Rule and Revised PN Rule
Noncompliance period start February 16, 2023 · period end April 22, 2026 · first reported June 16, 2026 · EPA return-to-compliance field April 22, 2026

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
57620 April 22, 2026 Resolving State Compliance achieved
Other or unclassified · Resolved
Consumer Confidence Report Complete Failure to ReportViolation 1244 · Consumer Confidence Rule · Consumer Confidence Rule
Noncompliance period start July 1, 2022 · period end October 5, 2022 · first reported November 14, 2022 · EPA return-to-compliance field October 5, 2022

2 linked actions

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
57590 October 5, 2022 Informal State Violation/Reminder Notice
57591 October 5, 2022 Resolving State Compliance achieved
Other or unclassified · Resolved
Public Notification Violation for NPDWR ViolationViolation 1242 · Public Notice · Public Notice Rule and Revised PN Rule
Noncompliance period start February 23, 2022 · period end August 9, 2022 · first reported November 14, 2022 · EPA return-to-compliance field August 9, 2022

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
57597 August 9, 2022 Resolving State Compliance achieved
Other or unclassified · Resolved
Public Notification Violation for NPDWR ViolationViolation 1243 · Public Notice · Public Notice Rule and Revised PN Rule
Noncompliance period start January 8, 2022 · period end August 9, 2022 · first reported November 14, 2022 · EPA return-to-compliance field August 9, 2022

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
57600 August 9, 2022 Resolving State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
57620	April 22, 2026	Resolving	State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
57590	October 5, 2022	Informal	State Violation/Reminder Notice
57591	October 5, 2022	Resolving	State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
57597	August 9, 2022	Resolving	State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
57600	August 9, 2022	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Follow-up Or Routine LCR Tap M/RViolation 1239 · Lead and Copper Rule · Lead and Copper Rule

Noncompliance period start October 1, 2021 · period end September 27, 2022 · first reported May 19, 2022 · EPA return-to-compliance field September 27, 2022

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
57579	February 15, 2022	Informal	State Violation/Reminder Notice
57580	February 15, 2022	Informal	State Public Notification requested
57592	September 27, 2022	Resolving	State Compliance achieved

Other or unclassified · Resolved
Public Notification Violation for NPDWR ViolationViolation 1238 · Public Notice · Public Notice Rule and Revised PN Rule
Noncompliance period start February 13, 2021 · period end August 9, 2022 · first reported February 23, 2022 · EPA return-to-compliance field August 9, 2022

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
57593 August 9, 2022 Resolving State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
57593	August 9, 2022	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 1241 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start September 1, 2020 · period end July 31, 2021 · first reported August 10, 2022 · EPA return-to-compliance field July 31, 2021

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
57581	May 31, 2022	Informal	State Violation/Reminder Notice
57582	May 31, 2022	Informal	State Public Notification requested
57599	August 9, 2022	Informal	State Public Notification received
57602	July 27, 2023	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 1240 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start September 1, 2020 · period end July 31, 2021 · first reported August 10, 2022 · EPA return-to-compliance field July 31, 2021

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
57581	May 31, 2022	Informal	State Violation/Reminder Notice
57582	May 31, 2022	Informal	State Public Notification requested
57599	August 9, 2022	Informal	State Public Notification received
57602	July 27, 2023	Resolving	State Compliance achieved

Other or unclassified · Resolved
Public Notification Violation for NPDWR ViolationViolation 1235 · Public Notice · Public Notice Rule and Revised PN Rule
Noncompliance period start March 15, 2020 · period end August 9, 2022 · first reported February 22, 2021 · EPA return-to-compliance field August 9, 2022

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
57595 August 9, 2022 Resolving State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
57595	August 9, 2022	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Failure To Address DeficiencyViolation 1227 · Groundwater Rule · Ground Water Rule

Noncompliance period start November 13, 2019 · period end September 12, 2022 · first reported May 6, 2020 · EPA return-to-compliance field September 12, 2022

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
57566	February 13, 2020	Informal	State Violation/Reminder Notice
57567	February 13, 2020	Informal	State Public Notification requested
57596	August 9, 2022	Informal	State Public Notification received
57586	September 12, 2022	Resolving	State Compliance achieved
57587	September 12, 2022	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Failure To Address DeficiencyViolation 1226 · Groundwater Rule · Ground Water Rule

Noncompliance period start November 13, 2019 · period end September 12, 2022 · first reported May 6, 2020 · EPA return-to-compliance field September 12, 2022

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
57566	February 13, 2020	Informal	State Violation/Reminder Notice
57567	February 13, 2020	Informal	State Public Notification requested
57596	August 9, 2022	Informal	State Public Notification received
57583	September 12, 2022	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Failure To Address DeficiencyViolation 1225 · Groundwater Rule · Ground Water Rule

Noncompliance period start November 13, 2019 · period end September 12, 2022 · first reported May 6, 2020 · EPA return-to-compliance field September 12, 2022

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
57566	February 13, 2020	Informal	State Violation/Reminder Notice
57567	February 13, 2020	Informal	State Public Notification requested
57596	August 9, 2022	Informal	State Public Notification received
57584	September 12, 2022	Resolving	State Compliance achieved
57585	September 12, 2022	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 1234 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start September 1, 2019 · period end July 31, 2020 · first reported February 22, 2021 · EPA return-to-compliance field July 31, 2020

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
57570	January 7, 2021	Informal	State Violation/Reminder Notice
57571	January 7, 2021	Informal	State Public Notification requested
57601	August 9, 2022	Informal	State Public Notification received
57602	July 27, 2023	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 1233 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start September 1, 2019 · period end July 31, 2020 · first reported February 22, 2021 · EPA return-to-compliance field July 31, 2020

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
57570	January 7, 2021	Informal	State Violation/Reminder Notice
57571	January 7, 2021	Informal	State Public Notification requested
57601	August 9, 2022	Informal	State Public Notification received
57602	July 27, 2023	Resolving	State Compliance achieved

Other or unclassified · Resolved

Failure to Consult with StateViolation 1224 · Groundwater Rule · Ground Water Rule

Noncompliance period start August 18, 2019 · period end September 12, 2022 · first reported May 6, 2020 · EPA return-to-compliance field September 12, 2022

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
57564	February 13, 2020	Informal	State Violation/Reminder Notice
57565	February 13, 2020	Informal	State Public Notification requested
57594	August 9, 2022	Informal	State Public Notification received
57588	September 8, 2022	Resolving	State Compliance achieved
57589	September 12, 2022	Resolving	State Compliance achieved

Other or unclassified · Resolved
Public Notification Violation for NPDWR ViolationViolation 1230 · Public Notice · Public Notice Rule and Revised PN Rule
Noncompliance period start September 25, 2017 · period end February 12, 2021 · first reported February 22, 2021 · EPA return-to-compliance field February 12, 2021

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
57573 February 12, 2021 Resolving State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
57573	February 12, 2021	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 1237 · 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
57576	January 26, 2017	Resolving	State Compliance achieved
57574	February 22, 2021	Informal	State Violation/Reminder Notice
57575	February 22, 2021	Informal	State Public Notification requested
57598	August 9, 2022	Informal	State Public Notification received

Monitoring or reporting · Archived
Monitoring and Reporting (DBP)Violation 1236 · 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

Follow-up Or Routine LCR Tap M/RViolation 1255 · Lead and Copper Rule · Lead and Copper Rule

Noncompliance period start October 1, 2010 · period end September 27, 2011 · first reported June 16, 2026 · EPA return-to-compliance field September 27, 2011

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
57623	September 27, 2011	Resolving	State Compliance achieved
57621	May 26, 2026	Informal	State Violation/Reminder Notice
57622	May 26, 2026	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