NM3504026 · New Mexico

CANADA DE LOS ALAMOS MDWCA

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

Violation records shown: 29
EPA health-based flag: 3
Health-based records unresolved in this snapshot: 0
Monitoring and reporting records: 19

Counties listed by EPA · Santa Fe 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 27 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 906 days. The interval uses the reporting periods and dates on file.

Monitoring or reporting · Resolved
Lead Consumer NoticeViolation 341 · Lead and Copper Rule · Lead and Copper Rule
Noncompliance period start September 29, 2025 · period end December 18, 2025 · first reported December 3, 2025 · EPA return-to-compliance field December 18, 2025

2 linked actions

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
47912 November 5, 2025 Informal State Violation/Reminder Notice
47921 December 18, 2025 Resolving State Compliance achieved
Other or unclassified · Resolved
Public Notification Violation for NPDWR ViolationViolation 344 · Public Notice · Public Notice Rule and Revised PN Rule
Noncompliance period start October 26, 2024 · period end April 20, 2026 · first reported June 16, 2026 · EPA return-to-compliance field April 20, 2026

2 linked actions

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
47929 November 4, 2024 Resolving State Compliance achieved
47934 April 20, 2026 Resolving State Compliance achieved
Other or unclassified · Resolved
Public Notification Violation for NPDWR ViolationViolation 345 · Public Notice · Public Notice Rule and Revised PN Rule
Noncompliance period start May 16, 2024 · period end April 20, 2026 · first reported June 16, 2026 · EPA return-to-compliance field April 20, 2026

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
47933 April 20, 2026 Resolving State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
47912	November 5, 2025	Informal	State Violation/Reminder Notice
47921	December 18, 2025	Resolving	State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
47929	November 4, 2024	Resolving	State Compliance achieved
47934	April 20, 2026	Resolving	State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
47933	April 20, 2026	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Follow-up Or Routine LCR Tap M/RViolation 332 · Lead and Copper Rule · Lead and Copper Rule

Noncompliance period start January 1, 2024 · period end June 24, 2024 · first reported March 31, 2025 · EPA return-to-compliance field June 24, 2024

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
47908	June 24, 2024	Resolving	State Compliance achieved
47906	August 27, 2024	Informal	State Violation/Reminder Notice
47907	August 27, 2024	Informal	State Public Notification requested
47910	November 4, 2024	Informal	State Public Notification received

Monitoring or reporting · Resolved
Lead Consumer NoticeViolation 335 · Lead and Copper Rule · Lead and Copper Rule
Noncompliance period start September 29, 2023 · period end May 26, 2026 · first reported December 3, 2025 · EPA return-to-compliance field May 26, 2026

2 linked actions

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
47913 November 5, 2025 Informal State Violation/Reminder Notice
47936 May 26, 2026 Resolving State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
47913	November 5, 2025	Informal	State Violation/Reminder Notice
47936	May 26, 2026	Resolving	State Compliance achieved

Monitoring or reporting · Archived

Monitoring and Reporting (DBP)Violation 331 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start January 1, 2023 · period end December 31, 2023 · first reported August 16, 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
47904	May 16, 2024	Informal	State Violation/Reminder Notice
47905	May 16, 2024	Informal	State Public Notification requested
47911	April 1, 2025	Informal	State Public Notification received

Monitoring or reporting · Archived

Monitoring and Reporting (DBP)Violation 330 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start January 1, 2023 · period end December 31, 2023 · first reported August 16, 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
47904	May 16, 2024	Informal	State Violation/Reminder Notice
47905	May 16, 2024	Informal	State Public Notification requested
47911	April 1, 2025	Informal	State Public Notification received

Monitoring or reporting · Resolved

Follow-up Or Routine LCR Tap M/RViolation 329 · Lead and Copper Rule · Lead and Copper Rule

Noncompliance period start January 1, 2023 · period end June 26, 2023 · first reported August 22, 2023 · EPA return-to-compliance field June 26, 2023

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
47901	May 16, 2023	Informal	State Violation/Reminder Notice
47902	May 16, 2023	Informal	State Public Notification requested
47903	June 26, 2023	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Follow-up Or Routine LCR Tap M/RViolation 328 · Lead and Copper Rule · Lead and Copper Rule

Noncompliance period start July 1, 2022 · period end June 26, 2023 · first reported August 22, 2023 · EPA return-to-compliance field June 26, 2023

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
47901	May 16, 2023	Informal	State Violation/Reminder Notice
47902	May 16, 2023	Informal	State Public Notification requested
47903	June 26, 2023	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Follow-up Or Routine LCR Tap M/RViolation 327 · Lead and Copper Rule · Lead and Copper Rule

Noncompliance period start January 1, 2022 · period end June 26, 2023 · first reported August 22, 2023 · EPA return-to-compliance field June 26, 2023

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
47901	May 16, 2023	Informal	State Violation/Reminder Notice
47902	May 16, 2023	Informal	State Public Notification requested
47903	June 26, 2023	Resolving	State Compliance achieved

Monitoring or reporting · Resolved
Lead Consumer NoticeViolation 339 · Lead and Copper Rule · Lead and Copper Rule
Noncompliance period start September 29, 2021 · period end February 17, 2026 · first reported December 3, 2025 · EPA return-to-compliance field February 17, 2026

2 linked actions

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
47914 November 5, 2025 Informal State Violation/Reminder Notice
47928 February 17, 2026 Resolving State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
47914	November 5, 2025	Informal	State Violation/Reminder Notice
47928	February 17, 2026	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Follow-up Or Routine LCR Tap M/RViolation 326 · Lead and Copper Rule · Lead and Copper Rule

Noncompliance period start January 1, 2021 · period end June 26, 2023 · first reported August 22, 2023 · EPA return-to-compliance field June 26, 2023

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
47901	May 16, 2023	Informal	State Violation/Reminder Notice
47902	May 16, 2023	Informal	State Public Notification requested
47903	June 26, 2023	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 325 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts Rule

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

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
47897	April 21, 2022	Informal	State Violation/Reminder Notice
47898	April 21, 2022	Informal	State Public Notification requested
47899	June 1, 2022	Informal	State Public Notification received
47900	July 28, 2022	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 324 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts Rule

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

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
47897	April 21, 2022	Informal	State Violation/Reminder Notice
47898	April 21, 2022	Informal	State Public Notification requested
47899	June 1, 2022	Informal	State Public Notification received
47900	July 28, 2022	Resolving	State Compliance achieved

Monitoring or reporting · Resolved
Lead Consumer NoticeViolation 342 · Lead and Copper Rule · Lead and Copper Rule
Noncompliance period start September 29, 2020 · period end May 26, 2026 · first reported December 3, 2025 · EPA return-to-compliance field May 26, 2026

2 linked actions

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
47915 November 5, 2025 Informal State Violation/Reminder Notice
47935 May 26, 2026 Resolving State Compliance achieved
Other or unclassified · Resolved
Public Notification Violation for NPDWR ViolationViolation 323 · Public Notice · Public Notice Rule and Revised PN Rule
Noncompliance period start May 14, 2020 · period end November 5, 2021 · first reported November 29, 2021 · EPA return-to-compliance field November 5, 2021

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
47891 November 5, 2021 Resolving State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
47915	November 5, 2025	Informal	State Violation/Reminder Notice
47935	May 26, 2026	Resolving	State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
47891	November 5, 2021	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Failure To Address DeficiencyViolation 320 · Groundwater Rule · Ground Water Rule

Noncompliance period start March 27, 2020 · period end August 14, 2025 · first reported May 6, 2020 · EPA return-to-compliance field August 14, 2025

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
47883	April 13, 2020	Informal	State Violation/Reminder Notice
47884	April 13, 2020	Informal	State Public Notification requested
47892	November 30, 2021	Informal	State Public Notification received
47922	August 14, 2025	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Failure To Address DeficiencyViolation 319 · Groundwater Rule · Ground Water Rule

Noncompliance period start March 27, 2020 · period end November 5, 2021 · first reported May 6, 2020 · EPA return-to-compliance field November 5, 2021

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
47883	April 13, 2020	Informal	State Violation/Reminder Notice
47884	April 13, 2020	Informal	State Public Notification requested
47893	November 5, 2021	Resolving	State Compliance achieved
47894	November 5, 2021	Resolving	State Compliance achieved
47892	November 30, 2021	Informal	State Public Notification received

EPA health-based flag · Resolved

Failure To Address DeficiencyViolation 318 · Groundwater Rule · Ground Water Rule

Noncompliance period start March 27, 2020 · period end November 5, 2021 · first reported May 6, 2020 · EPA return-to-compliance field November 5, 2021

5 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
47883	April 13, 2020	Informal	State Violation/Reminder Notice
47884	April 13, 2020	Informal	State Public Notification requested
47895	November 5, 2021	Resolving	State Compliance achieved
47896	November 5, 2021	Resolving	State Compliance achieved
47892	November 30, 2021	Informal	State Public Notification received

Monitoring or reporting · Resolved
Lead Consumer NoticeViolation 334 · Lead and Copper Rule · Lead and Copper Rule
Noncompliance period start December 30, 2019 · period end February 17, 2026 · first reported December 3, 2025 · EPA return-to-compliance field February 17, 2026

2 linked actions

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
47916 November 5, 2025 Informal State Violation/Reminder Notice
47927 February 17, 2026 Resolving State Compliance achieved
Other or unclassified · Resolved
Public Notification Violation for NPDWR ViolationViolation 322 · Public Notice · Public Notice Rule and Revised PN Rule
Noncompliance period start February 6, 2017 · period end November 2, 2021 · first reported November 29, 2021 · EPA return-to-compliance field November 2, 2021

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
47890 November 2, 2021 Resolving State Compliance achieved
Monitoring or reporting · Resolved
Lead Consumer NoticeViolation 337 · Lead and Copper Rule · Lead and Copper Rule
Noncompliance period start December 30, 2015 · period end February 17, 2026 · first reported December 3, 2025 · EPA return-to-compliance field February 17, 2026

2 linked actions

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
47917 November 5, 2025 Informal State Violation/Reminder Notice
47926 February 17, 2026 Resolving State Compliance achieved
Monitoring or reporting · Resolved
Lead Consumer NoticeViolation 338 · Lead and Copper Rule · Lead and Copper Rule
Noncompliance period start December 30, 2014 · period end February 17, 2026 · first reported December 3, 2025 · EPA return-to-compliance field February 17, 2026

2 linked actions

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
47918 November 5, 2025 Informal State Violation/Reminder Notice
47925 February 17, 2026 Resolving State Compliance achieved
Monitoring or reporting · Resolved
Lead Consumer NoticeViolation 340 · Lead and Copper Rule · Lead and Copper Rule
Noncompliance period start December 30, 2013 · period end February 17, 2026 · first reported December 3, 2025 · EPA return-to-compliance field February 17, 2026

2 linked actions

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
47919 November 5, 2025 Informal State Violation/Reminder Notice
47924 February 17, 2026 Resolving State Compliance achieved
Monitoring or reporting · Resolved
Follow-up Or Routine LCR Tap M/RViolation 333 · Lead and Copper Rule · Lead and Copper Rule
Noncompliance period start October 1, 2012 · period end September 16, 2013 · first reported March 31, 2025 · EPA return-to-compliance field September 16, 2013

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
47909 September 16, 2013 Resolving State Compliance achieved
Other or unclassified · Resolved
Public Notification Violation for NPDWR ViolationViolation 347 · Public Notice · Public Notice Rule and Revised PN Rule
Noncompliance period start February 11, 2012 · period end April 20, 2026 · first reported June 16, 2026 · EPA return-to-compliance field April 20, 2026

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
47930 April 20, 2026 Resolving State Compliance achieved
Other or unclassified · Resolved
Public Notification Violation for NPDWR ViolationViolation 346 · Public Notice · Public Notice Rule and Revised PN Rule
Noncompliance period start January 26, 2012 · period end April 20, 2026 · first reported June 16, 2026 · EPA return-to-compliance field April 20, 2026

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
47931 April 20, 2026 Resolving State Compliance achieved
Monitoring or reporting · Resolved
Lead Consumer NoticeViolation 336 · Lead and Copper Rule · Lead and Copper Rule
Noncompliance period start December 30, 2011 · period end February 18, 2026 · first reported December 3, 2025 · EPA return-to-compliance field February 18, 2026

2 linked actions

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
47920 November 5, 2025 Informal State Violation/Reminder Notice
47923 February 18, 2026 Resolving State Compliance achieved
Other or unclassified · Resolved
Public Notification Violation for NPDWR ViolationViolation 343 · Public Notice · Public Notice Rule and Revised PN Rule
Noncompliance period start December 11, 2011 · period end April 20, 2026 · first reported June 16, 2026 · EPA return-to-compliance field April 20, 2026

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
47932 April 20, 2026 Resolving State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
47916	November 5, 2025	Informal	State Violation/Reminder Notice
47927	February 17, 2026	Resolving	State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
47890	November 2, 2021	Resolving	State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
47917	November 5, 2025	Informal	State Violation/Reminder Notice
47926	February 17, 2026	Resolving	State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
47918	November 5, 2025	Informal	State Violation/Reminder Notice
47925	February 17, 2026	Resolving	State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
47919	November 5, 2025	Informal	State Violation/Reminder Notice
47924	February 17, 2026	Resolving	State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
47909	September 16, 2013	Resolving	State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
47930	April 20, 2026	Resolving	State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
47931	April 20, 2026	Resolving	State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
47920	November 5, 2025	Informal	State Violation/Reminder Notice
47923	February 18, 2026	Resolving	State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
47932	April 20, 2026	Resolving	State Compliance achieved

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