States ›New Mexico ›Valencia County ›Los Chaves

Los Chaves, NM Tap Water Quality 2026

Water quality report for Los Chaves, NM — PFAS, lead and copper results, violation history and state inspection findings from EPA SDWIS.

A look at Los Chaves's drinking water using EPA enforcement records: violations, lead and copper results, PFAS sampling and state inspection findings.

Main Utility: Loma Escondida Water Association PWSID: NM3500432 Updated: 2026 Q2
✅

No federal limits exceeded on record

Lead was not detected and no violations are open. PFAS has never been sampled at this system.

C

Los Chaves earns a C for water quality

Graded on violations and lead, with state inspection findings. PFAS not tested.

Lead: not detected
PFAS never sampled at this system
368 violations since 2015, 41 health-based
No violations currently open
Los Chaves's lead level vs. all New Mexico community water systems
0 ppb5 ppb10 ppb15 ppb
Lead level: Not detected — 0% of the federal action level
✓ Lower lead than % of New Mexico utilities
Population Served
214
~30 connections
Water Source
Groundwater
Drawn from wells — SDWIS source code GW
Active Violations
0
368 since 2015, all resolved

Lead & Copper Testing

Lead (Pb)
90th percentile of tap samples collected across the distribution system
0% of EPA action level
Not detected
Action level: 15 ppb
Lead was not detected at the 90th percentile — the result fell below the laboratory detection limit. That is not the same as an absence of lead in every tap, and older homes with lead service lines can still show higher readings.

Contaminant Violations (2015–Present)

ContaminantTypeMeasuredLimitPeriodStatus
Revised Total Coliform Rule MONITORING FAILURE — — 2026 Archived
Revised Total Coliform Rule MONITORING FAILURE — — 2026 Archived
Revised Total Coliform Rule MONITORING FAILURE — — 2026 Archived
Lead and Copper Rule MONITORING AND REPORTING — TT 2026 Addressed
Revised Total Coliform Rule MONITORING FAILURE — — 2025 Archived
Revised Total Coliform Rule MONITORING FAILURE — — 2025 Archived
Revised Total Coliform Rule MONITORING FAILURE — — 2025 Archived
Consumer Confidence Rule OTHER — — 2025 Addressed
Revised Total Coliform Rule MONITORING FAILURE — — 2025 Archived
Public Notice OTHER — — 2025 Addressed
Revised Total Coliform Rule MONITORING FAILURE — — 2025 Archived
Public Notice OTHER — — 2025 Addressed
Revised Total Coliform Rule MONITORING FAILURE — — 2025 Archived
Consumer Confidence Rule OTHER — — 2025 Addressed
Lead and Copper Rule MONITORING AND REPORTING — TT 2025 Addressed
Public Notice OTHER — — 2025 Addressed
Revised Total Coliform Rule MONITORING FAILURE — — 2025 Archived
Revised Total Coliform Rule MONITORING FAILURE — — 2025 Archived
Public Notice OTHER — — 2025 Addressed
Revised Total Coliform Rule MONITORING FAILURE — — 2025 Archived
Public Notice OTHER — — 2025 Addressed
Revised Total Coliform Rule MONITORING FAILURE — — 2025 Archived
Public Notice OTHER — — 2025 Addressed
Revised Total Coliform Rule MONITORING FAILURE — — 2025 Archived
Revised Total Coliform Rule MONITORING FAILURE — — 2025 Archived
Public Notice OTHER — — 2024 Addressed
Public Notice OTHER — — 2024 Addressed
Revised Total Coliform Rule MONITORING FAILURE — — 2024 Archived
Public Notice OTHER — — 2024 Addressed
Revised Total Coliform Rule MONITORING FAILURE — — 2024 Archived
Consumer Confidence Rule OTHER — — 2024 Addressed
Revised Total Coliform Rule MONITORING FAILURE — — 2024 Archived
Lead and Copper Rule MONITORING AND REPORTING — TT 2024 Addressed
Public Notice OTHER — — 2024 Addressed
Revised Total Coliform Rule MONITORING FAILURE — — 2024 Archived
Public Notice OTHER — — 2024 Addressed
Revised Total Coliform Rule MONITORING FAILURE — — 2024 Archived
Public Notice OTHER — — 2024 Addressed
Revised Total Coliform Rule MONITORING FAILURE — — 2024 Archived
Consumer Confidence Rule OTHER — — 2024 Addressed
Public Notice OTHER — — 2024 Addressed
Public Notice OTHER — — 2024 Addressed
Revised Total Coliform Rule MONITORING FAILURE — — 2024 Archived
Revised Total Coliform Rule MONITORING FAILURE — — 2024 Archived
Public Notice OTHER — — 2024 Addressed
Revised Total Coliform Rule MONITORING FAILURE — — 2024 Archived
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2024 Archived
Public Notice OTHER — — 2024 Addressed
Public Notice OTHER — — 2024 Addressed
Revised Total Coliform Rule MONITORING FAILURE — — 2024 Archived
Revised Total Coliform Rule MONITORING FAILURE — — 2024 Archived
Public Notice OTHER — — 2024 Addressed
Public Notice OTHER — — 2024 Addressed
Revised Total Coliform Rule MONITORING FAILURE — — 2024 Archived
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2024 Archived
Public Notice OTHER — — 2023 Addressed
Revised Total Coliform Rule MONITORING FAILURE — — 2023 Archived
Public Notice OTHER — — 2023 Addressed
Public Notice OTHER — — 2023 Addressed
Revised Total Coliform Rule MONITORING FAILURE — — 2023 Archived
Revised Total Coliform Rule MONITORING FAILURE — — 2023 Archived
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2023 Archived
Lead and Copper Rule MONITORING AND REPORTING — TT 2023 Addressed
Consumer Confidence Rule OTHER — — 2023 Addressed
Revised Total Coliform Rule MONITORING FAILURE — — 2023 Archived
Public Notice OTHER — — 2023 Addressed
Revised Total Coliform Rule MONITORING FAILURE — — 2023 Archived
Public Notice OTHER — — 2023 Addressed
Consumer Confidence Rule OTHER — — 2023 Addressed
Revised Total Coliform Rule MONITORING FAILURE — — 2023 Archived
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2023 Archived
Public Notice OTHER — — 2023 Addressed
Revised Total Coliform Rule MONITORING FAILURE — — 2023 Archived
Public Notice OTHER — — 2023 Addressed
Revised Total Coliform Rule MONITORING FAILURE — — 2023 Archived
Public Notice OTHER — — 2023 Addressed
Revised Total Coliform Rule MONITORING FAILURE — — 2023 Archived
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2023 Archived
Public Notice OTHER — — 2023 Addressed
Revised Total Coliform Rule MONITORING FAILURE — — 2023 Archived
Public Notice OTHER — — 2023 Addressed
Public Notice OTHER — — 2023 Addressed
Revised Total Coliform Rule MONITORING FAILURE — — 2023 Archived
Public Notice OTHER — — 2023 Addressed
Public Notice OTHER — — 2023 Addressed
Revised Total Coliform Rule MONITORING FAILURE — — 2023 Archived
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2023 Archived
Revised Total Coliform Rule MONITORING FAILURE — — 2022 Archived
Public Notice OTHER — — 2022 Addressed
Public Notice OTHER — — 2022 Addressed
Revised Total Coliform Rule MONITORING FAILURE — — 2022 Archived
Public Notice OTHER — — 2022 Addressed
Public Notice OTHER — — 2022 Addressed
Revised Total Coliform Rule MONITORING FAILURE — — 2022 Archived
Arsenic MONITORING AND REPORTING — 0.010 mg/L 2022 Resolved
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2022 Archived
Consumer Confidence Rule OTHER — — 2022 Addressed
Revised Total Coliform Rule MONITORING FAILURE — — 2022 Archived
Public Notice OTHER — — 2022 Addressed
Public Notice OTHER — — 2022 Addressed
Revised Total Coliform Rule MONITORING FAILURE — — 2022 Archived
Public Notice OTHER — — 2022 Addressed
Revised Total Coliform Rule MONITORING FAILURE — — 2022 Archived
Consumer Confidence Rule OTHER — — 2022 Addressed
Arsenic MONITORING AND REPORTING — 0.010 mg/L 2022 Resolved
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2022 Archived
Arsenic MCL EXCEEDANCE 0.016 MG/L 0.010 mg/L 2022 Archived
Public Notice OTHER — — 2022 Addressed
Public Notice OTHER — — 2022 Addressed
Revised Total Coliform Rule MONITORING FAILURE — — 2022 Archived
Revised Total Coliform Rule MONITORING FAILURE — — 2022 Archived
Public Notice OTHER — — 2022 Addressed
Public Notice OTHER — — 2022 Addressed
Revised Total Coliform Rule MONITORING FAILURE — — 2022 Archived
Arsenic MONITORING AND REPORTING — 0.010 mg/L 2022 Resolved
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2022 Archived
Arsenic MCL EXCEEDANCE 0.016 MG/L 0.010 mg/L 2022 Archived
Public Notice OTHER — — 2022 Addressed
Public Notice OTHER — — 2022 Addressed
Revised Total Coliform Rule MONITORING FAILURE — — 2022 Archived
Revised Total Coliform Rule MONITORING FAILURE — — 2022 Archived
Public Notice OTHER — — 2022 Addressed
Public Notice OTHER — — 2022 Addressed
Public Notice OTHER — — 2022 Addressed
Revised Total Coliform Rule MONITORING FAILURE — — 2022 Archived
Nitrate-Nitrite MONITORING AND REPORTING — — 2022 Resolved
Arsenic MONITORING AND REPORTING — 0.010 mg/L 2022 Resolved
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2022 Archived
Arsenic MCL EXCEEDANCE 0.016 MG/L 0.010 mg/L 2022 Archived
Public Notice OTHER — — 2021 Addressed
Public Notice OTHER — — 2021 Addressed
Public Notice OTHER — — 2021 Addressed
Revised Total Coliform Rule MONITORING FAILURE — — 2021 Archived
Public Notice OTHER — — 2021 Addressed
Revised Total Coliform Rule MONITORING FAILURE — — 2021 Archived
Public Notice OTHER — — 2021 Addressed
Public Notice OTHER — — 2021 Addressed
Revised Total Coliform Rule MONITORING FAILURE — — 2021 Archived
Arsenic MCL EXCEEDANCE 0.016 MG/L 0.010 mg/L 2021 Archived
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2021 Archived
Lead and Copper Rule MONITORING AND REPORTING — TT 2021 Addressed
TTHM MONITORING AND REPORTING — 0.080 mg/L 2021–2022 Archived
Total Haloacetic Acids (HAA5) MONITORING AND REPORTING — 0.060 mg/L 2021–2022 Archived
Consumer Confidence Rule OTHER — — 2021 Addressed
Public Notice OTHER — — 2021 Addressed
Public Notice OTHER — — 2021 Addressed
Revised Total Coliform Rule MONITORING FAILURE — — 2021 Archived
Public Notice OTHER — — 2021 Addressed
Revised Total Coliform Rule MONITORING FAILURE — — 2021 Archived
Public Notice OTHER — — 2021 Addressed
Consumer Confidence Rule OTHER — — 2021 Addressed
Revised Total Coliform Rule MONITORING FAILURE — — 2021 Archived
Arsenic MCL EXCEEDANCE 0.016 MG/L 0.010 mg/L 2021 Archived
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2021 Archived
Public Notice OTHER — — 2021 Addressed
Revised Total Coliform Rule MONITORING FAILURE — — 2021 Archived
Public Notice OTHER — — 2021 Addressed
Public Notice OTHER — — 2021 Addressed
Revised Total Coliform Rule MONITORING FAILURE — — 2021 Archived
Public Notice OTHER — — 2021 Addressed
Public Notice OTHER — — 2021 Addressed
Public Notice OTHER — — 2021 Addressed
Revised Total Coliform Rule MONITORING FAILURE — — 2021 Archived
Arsenic MCL EXCEEDANCE 0.016 MG/L 0.010 mg/L 2021 Archived
Public Notice OTHER — — 2021 Addressed
Revised Total Coliform Rule MONITORING FAILURE — — 2021 Archived
Public Notice OTHER — — 2021 Addressed
Revised Total Coliform Rule MONITORING FAILURE — — 2021 Archived
Public Notice OTHER — — 2021 Addressed
Public Notice OTHER — — 2021 Addressed
Public Notice OTHER — — 2021 Addressed
Public Notice OTHER — — 2021 Addressed
Revised Total Coliform Rule MONITORING FAILURE — — 2021 Archived
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2021 Archived
Arsenic MCL EXCEEDANCE 0.016 MG/L 0.010 mg/L 2021 Archived
Public Notice OTHER — — 2020 Addressed
Revised Total Coliform Rule MONITORING FAILURE — — 2020 Archived
Public Notice OTHER — — 2020 Addressed
Public Notice OTHER — — 2020 Addressed
Revised Total Coliform Rule MONITORING FAILURE — — 2020 Archived
Public Notice OTHER — — 2020 Addressed
Revised Total Coliform Rule MONITORING FAILURE — — 2020 Archived
Arsenic MCL EXCEEDANCE 0.015 MG/L 0.010 mg/L 2020 Archived
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2020 Archived
Consumer Confidence Rule OTHER — — 2020 Addressed
Revised Total Coliform Rule MONITORING FAILURE — — 2020 Archived
Public Notice OTHER — — 2020 Addressed
Public Notice OTHER — — 2020 Addressed
Revised Total Coliform Rule MONITORING FAILURE — — 2020 Archived
Public Notice OTHER — — 2020 Addressed
Public Notice OTHER — — 2020 Addressed
Consumer Confidence Rule OTHER — — 2020 Addressed
Revised Total Coliform Rule MONITORING FAILURE — — 2020 Archived
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2020 Archived
Arsenic MONITORING AND REPORTING — 0.010 mg/L 2020 Archived
Arsenic MCL EXCEEDANCE 0.017 MG/L 0.010 mg/L 2020 Archived
Revised Total Coliform Rule MONITORING FAILURE — — 2020 Archived
Revised Total Coliform Rule MONITORING FAILURE — — 2020 Archived
Public Notice OTHER — — 2020 Addressed
Revised Total Coliform Rule MONITORING FAILURE — — 2020 Archived
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2020 Archived
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2020 Archived
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2020 Archived
Arsenic MONITORING AND REPORTING — 0.010 mg/L 2020 Resolved
Arsenic MCL EXCEEDANCE 0.017 MG/L 0.010 mg/L 2020 Archived
Public Notice OTHER — — 2020 Addressed
Revised Total Coliform Rule MONITORING FAILURE — — 2020 Archived
Revised Total Coliform Rule MONITORING FAILURE — — 2020 Archived
Revised Total Coliform Rule MONITORING FAILURE — — 2020 Archived
Arsenic MONITORING AND REPORTING — 0.010 mg/L 2020 Resolved
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2020 Archived
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2020 Archived
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2020 Archived
Asbestos MONITORING AND REPORTING — 7 MFL 2020–2022 Archived
Public Notice OTHER — — 2019 Addressed
Public Notice OTHER — — 2019 Addressed
Public Notice OTHER — — 2019 Addressed
Public Notice OTHER — — 2019 Addressed
Public Notice OTHER — — 2019 Addressed
Public Notice OTHER — — 2019 Addressed
Public Notice OTHER — — 2019 Addressed
Public Notice OTHER — — 2019 Addressed
Public Notice OTHER — — 2019 Addressed
Public Notice OTHER — — 2019 Addressed
Revised Total Coliform Rule MONITORING FAILURE — — 2019 Archived
Public Notice OTHER — — 2019 Addressed
Revised Total Coliform Rule MONITORING FAILURE — — 2019 Archived
Revised Total Coliform Rule MONITORING FAILURE — — 2019 Archived
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2019 Archived
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2019 Archived
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2019 Archived
Arsenic MONITORING AND REPORTING — 0.010 mg/L 2019 Resolved
TTHM MONITORING AND REPORTING — 0.080 mg/L 2019–2020 Archived
Total Haloacetic Acids (HAA5) MONITORING AND REPORTING — 0.060 mg/L 2019–2020 Archived
Consumer Confidence Rule OTHER — — 2019 Addressed
Groundwater Rule TREATMENT TECHNIQUE — — 2019 Addressed
Groundwater Rule TREATMENT TECHNIQUE — — 2019 Addressed
Groundwater Rule TREATMENT TECHNIQUE — — 2019 Addressed
Groundwater Rule TREATMENT TECHNIQUE — — 2019 Addressed
Groundwater Rule TREATMENT TECHNIQUE — — 2019 Addressed
Groundwater Rule TREATMENT TECHNIQUE — — 2019 Addressed
Groundwater Rule TREATMENT TECHNIQUE — — 2019 Addressed
Public Notice OTHER — — 2019 Addressed
Public Notice OTHER — — 2019 Addressed
Consumer Confidence Rule OTHER — — 2019 Addressed
Revised Total Coliform Rule MONITORING FAILURE — — 2019 Resolved
Arsenic MCL EXCEEDANCE 0.017 MG/L 0.010 mg/L 2019 Archived
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2019 Archived
Groundwater Rule OTHER — — 2019 Addressed
Revised Total Coliform Rule MONITORING FAILURE — — 2019 Resolved
Arsenic MCL EXCEEDANCE 0.017 MG/L 0.010 mg/L 2019 Archived
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2019 Archived
Public Notice OTHER — — 2019 Addressed
Revised Total Coliform Rule MONITORING FAILURE — — 2019 Resolved
Arsenic MCL EXCEEDANCE 0.017 MG/L 0.010 mg/L 2019 Archived
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2019 Archived
Public Notice OTHER — — 2018 Addressed
Public Notice OTHER — — 2018 Addressed
Revised Total Coliform Rule MONITORING FAILURE — — 2018 Resolved
Public Notice OTHER — — 2018 Addressed
Arsenic MCL EXCEEDANCE 0.017 MG/L 0.010 mg/L 2018 Archived
Lead and Copper Rule MONITORING AND REPORTING — TT 2018 Addressed
TTHM MONITORING AND REPORTING — 0.080 mg/L 2018–2019 Archived
Total Haloacetic Acids (HAA5) MONITORING AND REPORTING — 0.060 mg/L 2018–2019 Archived
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2018 Resolved
Revised Total Coliform Rule TREATMENT TECHNIQUE — — 2018 Addressed
E. COLI MONITORING AND REPORTING — 0 2018 Resolved
Arsenic MCL EXCEEDANCE 0.016 MG/L 0.010 mg/L 2018 Archived
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2018 Archived
Public Notice OTHER — — 2018 Resolved
Public Notice OTHER — — 2018 Resolved
Public Notice OTHER — — 2018 Resolved
Revised Total Coliform Rule MONITORING FAILURE — — 2018 Resolved
Arsenic MCL EXCEEDANCE 0.016 MG/L 0.010 mg/L 2018 Archived
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2018 Archived
Public Notice OTHER — — 2018 Addressed
Public Notice OTHER — — 2018 Addressed
Arsenic MCL EXCEEDANCE 0.018 MG/L 0.010 mg/L 2018 Archived
Revised Total Coliform Rule MONITORING FAILURE — — 2017 Resolved
Public Notice OTHER — — 2017 Addressed
Public Notice OTHER — — 2017 Resolved
Public Notice OTHER — — 2017 Resolved
Arsenic MCL EXCEEDANCE 0.018 MG/L 0.010 mg/L 2017 Archived
Arsenic MONITORING AND REPORTING — 0.010 mg/L 2017 Resolved
TTHM MONITORING AND REPORTING — 0.080 mg/L 2017–2018 Archived
Total Haloacetic Acids (HAA5) MONITORING AND REPORTING — 0.060 mg/L 2017–2018 Archived
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2017 Archived
Consumer Confidence Rule OTHER — — 2017 Resolved
Public Notice OTHER — — 2017 Resolved
Public Notice OTHER — — 2017 Resolved
Revised Total Coliform Rule MONITORING FAILURE — — 2017 Resolved
Public Notice OTHER — — 2017 Resolved
Consumer Confidence Rule OTHER — — 2017 Resolved
Arsenic MONITORING AND REPORTING — 0.010 mg/L 2017 Archived
Arsenic MCL EXCEEDANCE 0.017 MG/L 0.010 mg/L 2017 Archived
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2017 Resolved
Public Notice OTHER — — 2017 Addressed
Public Notice OTHER — — 2017 Resolved
Public Notice OTHER — — 2017 Addressed
Public Notice OTHER — — 2017 Resolved
Public Notice OTHER — — 2017 Resolved
Public Notice OTHER — — 2017 Resolved
Arsenic MONITORING AND REPORTING — 0.010 mg/L 2017 Resolved
Arsenic MCL EXCEEDANCE 0.017 MG/L 0.010 mg/L 2017 Archived
Public Notice OTHER — — 2017 Addressed
Groundwater Rule TREATMENT TECHNIQUE — — 2017 Resolved
Groundwater Rule TREATMENT TECHNIQUE — — 2017 Addressed
Groundwater Rule TREATMENT TECHNIQUE — — 2017 Addressed
Groundwater Rule TREATMENT TECHNIQUE — — 2017 Addressed
Public Notice OTHER — — 2017 Addressed
Revised Total Coliform Rule MONITORING FAILURE — — 2017 Resolved
Public Notice OTHER — — 2017 Addressed
Public Notice OTHER — — 2017 Addressed
Public Notice OTHER — — 2017 Resolved
Arsenic MCL EXCEEDANCE 0.017 MG/L 0.010 mg/L 2017 Archived
Public Notice OTHER — — 2016 Addressed
E. COLI MONITORING AND REPORTING — 0 2016 Resolved
Public Notice OTHER — — 2016 Addressed
Arsenic MCL EXCEEDANCE 0.017 MG/L 0.010 mg/L 2016 Archived
TTHM MONITORING AND REPORTING — 0.080 mg/L 2016–2017 Archived
Total Haloacetic Acids (HAA5) MONITORING AND REPORTING — 0.060 mg/L 2016–2017 Archived
Consumer Confidence Rule OTHER — — 2016 Resolved
Revised Total Coliform Rule MONITORING FAILURE — — 2016 Resolved
Revised Total Coliform Rule MONITORING FAILURE — — 2016 Resolved
Public Notice OTHER — — 2016 Resolved
Consumer Confidence Rule OTHER — — 2016 Resolved
Revised Total Coliform Rule MONITORING FAILURE — — 2016 Resolved
Arsenic MCL EXCEEDANCE 0.017 MG/L 0.010 mg/L 2016 Archived
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2016 Resolved
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2016 Resolved
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2016 Resolved
Revised Total Coliform Rule OTHER — — 2016 Resolved
Revised Total Coliform Rule MONITORING FAILURE — — 2016 Resolved
Public Notice OTHER — — 2016 Resolved
Arsenic MCL EXCEEDANCE 0.018 MG/L 0.010 mg/L 2016 Archived
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2016 Resolved
Public Notice OTHER — — 2016 Addressed
Coliform (TCR) MONITORING AND REPORTING — 5% of samples 2016 Resolved
Coliform (TCR) MONITORING AND REPORTING — 5% of samples 2016 Resolved
Public Notice OTHER — — 2016 Resolved
Coliform (TCR) MONITORING AND REPORTING — 5% of samples 2016 Resolved
Arsenic MCL EXCEEDANCE 0.018 MG/L 0.010 mg/L 2016 Archived
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2016 Resolved
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2016 Resolved
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2016 Resolved
Coliform (TCR) MONITORING AND REPORTING — 5% of samples 2015 Resolved
Public Notice OTHER — — 2015 Resolved
Public Notice OTHER — — 2015 Resolved
Coliform (TCR) MONITORING AND REPORTING — 5% of samples 2015 Resolved
Coliform (TCR) MONITORING AND REPORTING — 5% of samples 2015 Resolved
Arsenic MCL EXCEEDANCE 0.018 MG/L 0.010 mg/L 2015 Archived
Lead and Copper Rule MONITORING AND REPORTING — TT 2015 Addressed
TTHM MONITORING AND REPORTING — 0.080 mg/L 2015–2016 Archived
Total Haloacetic Acids (HAA5) MONITORING AND REPORTING — 0.060 mg/L 2015–2016 Archived
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2015 Resolved
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2015 Resolved
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2015 Resolved
Consumer Confidence Rule OTHER — — 2015 Resolved
Arsenic MCL EXCEEDANCE 0.018 MG/L 0.010 mg/L 2015 Archived
Public Notice OTHER — — 2015 Resolved
Public Notice OTHER — — 2015 Resolved
Public Notice OTHER — — 2015 Resolved
Public Notice OTHER — — 2015 Resolved
Arsenic MCL EXCEEDANCE 0.017 MG/L 0.010 mg/L 2015 Archived
Public Notice OTHER — — 2015 Resolved
Public Notice OTHER — — 2015 Resolved
Public Notice OTHER — — 2015 Resolved
Arsenic MCL EXCEEDANCE 0.018 MG/L 0.010 mg/L 2015 Archived
Understanding violation types MCL violations mean a contaminant exceeded the federal maximum limit — the most serious type.
TT (Treatment Technique) violations mean required treatment procedures weren't followed, but don't necessarily mean contamination occurred.

Violation History

368 violations are on record since 2015, of which 41 were health-based. All have been resolved and none remain open.

About the Main Water System

Utility Loma Escondida Water Association
PWSID NM3500432
Water source Groundwater — Drawn from wells — SDWIS source code GW
Population served 214
Service connections 30
Systems serving this area 3
Regulator State primacy agency
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Los Chaves tap water safe to drink? ▼
No federal limit is exceeded on record. No violations are currently open.
Does Los Chaves water have PFAS? ▼
This system has never been sampled for PFAS. EPA's national monitoring covered systems serving 3,300 people or more, so no results exist — which is not evidence that none is present.
Who supplies water to Los Chaves? ▼
Loma Escondida Water Association (PWSID NM3500432), one of 3 systems serving this area. Groundwater. Drawn from wells — SDWIS source code GW
When was this system last inspected? ▼
It was last inspected on 2019-03-13. Inspectors recorded 5 significant deficiencies.

What Should Los Chaves Residents Do?

1
Read your annual water report
Your supplier publishes a Consumer Confidence Report each July covering the prior year.
2
Check for a lead service line
Lead reaches tap water mainly through service lines and household plumbing. Suppliers now publish an inventory identifying lead lines.
3
Flush before drinking
If water has sat in pipes more than six hours, run the cold tap for two minutes before drinking or cooking.

Nearby Cities in New Mexico

Los Lunas, Nm Tap Water Quality 2026 Valencia Belen, Nm Tap Water Quality 2026 Valencia Rio Communities, Nm Tap Water Quality 2026 Valencia Bosque Farms, Nm Tap Water Quality 2026 Valencia Meadow Lake, Nm Tap Water Quality 2026 Valencia Monterey Park, Nm Tap Water Quality 2026 Valencia