NM3560007 · New Mexico
MESILLA WATER SYSTEM
Federal fiscal 2026Q3 · EPA violation and follow-up records
- Violation records shown
- 15
- EPA health-based flag
- 2
- Health-based records unresolved in this snapshot
- 0
- Monitoring and reporting records
- 7
Counties listed by EPA · Doña Ana 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 483 days. The interval uses the reporting periods and dates on file.
EPA health-based flag · Resolved
Failure To Address DeficiencyViolation 46946 · Groundwater Rule · Ground Water RuleNoncompliance period start November 20, 2024 · period end February 25, 2025 · first reported March 31, 2025 · EPA return-to-compliance field February 25, 2025
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 85 December 18, 2024 Informal State Violation/Reminder Notice 86 December 18, 2024 Informal State Public Notification requested 87 January 10, 2025 Informal State Public Notification received 90 February 25, 2025 Resolving State Compliance achieved EPA health-based flag · Resolved
LSL InventoryViolation 46949 · LEAD AND COPPER RULE REVISIONS · Lead and Copper Rule RevisionsNoncompliance period start October 17, 2024 · period end February 12, 2026 · first reported June 25, 2025 · EPA return-to-compliance field February 12, 2026
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 93 April 17, 2025 Informal State Violation/Reminder Notice 94 April 17, 2025 Informal State Public Notification requested 97 February 12, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
LSL ReportingViolation 46948 · LEAD AND COPPER RULE REVISIONS · Lead and Copper Rule RevisionsNoncompliance period start October 17, 2024 · period end February 12, 2026 · first reported June 25, 2025 · EPA return-to-compliance field February 12, 2026
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 91 April 17, 2025 Informal State Violation/Reminder Notice 92 April 17, 2025 Informal State Public Notification requested 98 February 12, 2026 Resolving State Compliance achieved Other or unclassified · Resolved
Public Notification Violation for NPDWR ViolationViolation 46944 · Public Notice · Public Notice Rule and Revised PN RuleNoncompliance period start December 19, 2021 · period end July 25, 2023 · first reported August 10, 2022 · EPA return-to-compliance field July 25, 2023
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 83 July 25, 2023 Resolving State Compliance achieved Other or unclassified · Resolved
Public Notification Violation for NPDWR ViolationViolation 46938 · Public Notice · Public Notice Rule and Revised PN RuleNoncompliance period start November 18, 2020 · period end February 11, 2021 · first reported February 22, 2021 · EPA return-to-compliance field February 11, 2021
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 64 February 11, 2021 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, Routine (RTCR)Violation 46937 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start November 1, 2020 · period end November 30, 2020 · first reported February 22, 2021 · EPA return-to-compliance field November 30, 2020
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 59 December 18, 2020 Informal State Violation/Reminder Notice 60 December 18, 2020 Informal State Public Notification requested 61 December 31, 2020 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 46943 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts RuleNoncompliance period start October 1, 2020 · period end December 8, 2020 · first reported May 19, 2022 · EPA return-to-compliance field December 8, 2020
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 77 December 8, 2020 Resolving State Compliance achieved 75 February 17, 2022 Informal State Violation/Reminder Notice 76 February 17, 2022 Informal State Public Notification requested 78 February 19, 2022 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring, RegularViolation 46945 · Asbestos · Inorganic ChemicalsNoncompliance period start January 1, 2020 · period end December 31, 2022 · first reported August 22, 2023 · EPA return-to-compliance field December 31, 2022
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 79 May 18, 2023 Informal State Violation/Reminder Notice 80 May 18, 2023 Informal State Public Notification requested 82 May 31, 2023 Resolving State Compliance achieved 81 June 28, 2023 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 46940 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start July 1, 2019 · period end June 30, 2020 · first reported February 22, 2021 · EPA return-to-compliance field June 30, 2020
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 62 February 5, 2021 Informal State Violation/Reminder Notice 63 February 5, 2021 Informal State Public Notification requested 66 February 12, 2021 Informal State Public Notification received 72 August 18, 2021 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 46939 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start July 1, 2019 · period end June 30, 2020 · first reported February 22, 2021 · EPA return-to-compliance field June 30, 2020
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 62 February 5, 2021 Informal State Violation/Reminder Notice 63 February 5, 2021 Informal State Public Notification requested 66 February 12, 2021 Informal State Public Notification received 72 August 18, 2021 Resolving State Compliance achieved Other or unclassified · Resolved
Public Notification Violation for NPDWR ViolationViolation 46934 · Public Notice · Public Notice Rule and Revised PN RuleNoncompliance period start August 18, 2018 · period end February 11, 2021 · first reported May 6, 2020 · EPA return-to-compliance field February 11, 2021
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 68 February 11, 2021 Resolving State Compliance achieved Other or unclassified · Resolved
Public Notification Violation for NPDWR ViolationViolation 46935 · Public Notice · Public Notice Rule and Revised PN RuleNoncompliance period start October 25, 2017 · period end February 11, 2021 · first reported May 6, 2020 · EPA return-to-compliance field February 11, 2021
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 70 February 11, 2021 Resolving State Compliance achieved Other or unclassified · Resolved
Consumer Confidence Report Inadequate ReportingViolation 46947 · Consumer Confidence Rule · Consumer Confidence RuleNoncompliance period start October 1, 2017 · period end November 8, 2018 · first reported March 31, 2025 · EPA return-to-compliance field November 8, 2018
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 89 November 8, 2018 Resolving State Compliance achieved 88 January 10, 2025 Informal State Violation/Reminder Notice Other or unclassified · Resolved
Public Notification Violation for NPDWR ViolationViolation 46951 · Public Notice · Public Notice Rule and Revised PN RuleNoncompliance period start May 16, 2013 · 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 99 April 20, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 46950 · Asbestos · Inorganic ChemicalsNoncompliance period start January 1, 2002 · period end December 31, 2010 · first reported September 23, 2025 · EPA return-to-compliance field December 31, 2010
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 96 December 18, 2013 Resolving State Compliance achieved 95 July 18, 2025 Informal State Violation/Reminder Notice
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