States ›New Mexico ›Valencia County ›Belen

Belen, NM Tap Water Quality 2026

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

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

Main Utility: Belen Water System PWSID: NM3524932 Updated: 2026 Q2
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8 violations currently open

Lead was not detected. PFAS was sampled but not enough times for a compliance determination.

F

Belen earns an F for water quality

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

Lead: not detected
PFAS sampled, too few results to judge
123 violations since 2015, 45 health-based
8 violations currently open
Belen'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
7281
~3827 connections
Water Source
Groundwater
Drawn from wells — SDWIS source code GW
Active Violations
8
8 open of 123 since 2015

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
Groundwater Rule TREATMENT TECHNIQUE — — 2025 Unaddressed
Groundwater Rule TREATMENT TECHNIQUE — — 2025 Unaddressed
Groundwater Rule TREATMENT TECHNIQUE — — 2025 Unaddressed
Groundwater Rule TREATMENT TECHNIQUE — — 2025 Unaddressed
Groundwater Rule TREATMENT TECHNIQUE — — 2025 Unaddressed
Groundwater Rule TREATMENT TECHNIQUE — — 2025 Unaddressed
Groundwater Rule TREATMENT TECHNIQUE — — 2025 Unaddressed
Groundwater Rule TREATMENT TECHNIQUE — — 2025 Unaddressed
Public Notice OTHER — — 2025 Unaddressed
Lead and Copper Rule MONITORING AND REPORTING — TT 2025 Unaddressed
Public Notice OTHER — — 2025 Resolved
Arsenic MCL EXCEEDANCE 0.026 MG/L 0.010 mg/L 2025 Resolved
Public Notice OTHER — — 2024 Resolved
E. COLI MONITORING AND REPORTING — 0 2024 Resolved
Public Notice OTHER — — 2024 Resolved
LEAD AND COPPER RULE REVISIONS REPORTING FAILURE — — 2024 Resolved
LEAD AND COPPER RULE REVISIONS TREATMENT TECHNIQUE — — 2024 Resolved
Arsenic MONITORING AND REPORTING — 0.010 mg/L 2024 Resolved
Arsenic MCL EXCEEDANCE 0.03 MG/L 0.010 mg/L 2024 Resolved
Arsenic MONITORING AND REPORTING — 0.010 mg/L 2024 Resolved
Arsenic MCL EXCEEDANCE 0.02 MG/L 0.010 mg/L 2024 Resolved
Public Notice OTHER — — 2024 Resolved
Arsenic MCL EXCEEDANCE 0.02 MG/L 0.010 mg/L 2024 Resolved
Arsenic MCL EXCEEDANCE 0.019 MG/L 0.010 mg/L 2024 Resolved
Revised Total Coliform Rule MONITORING FAILURE — — 2023 Resolved
Revised Total Coliform Rule MONITORING FAILURE — — 2023 Resolved
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2023 Resolved
Revised Total Coliform Rule MONITORING FAILURE — — 2023 Resolved
Revised Total Coliform Rule MONITORING FAILURE — — 2023 Resolved
Revised Total Coliform Rule MONITORING FAILURE — — 2023 Resolved
Arsenic MONITORING AND REPORTING — 0.010 mg/L 2023 Resolved
Arsenic MONITORING AND REPORTING — 0.010 mg/L 2023 Resolved
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2023 Resolved
Revised Total Coliform Rule MONITORING FAILURE — — 2023 Resolved
Revised Total Coliform Rule MONITORING FAILURE — — 2023 Resolved
Public Notice OTHER — — 2023 Unaddressed
Revised Total Coliform Rule MONITORING FAILURE — — 2023 Resolved
Arsenic MONITORING AND REPORTING — 0.010 mg/L 2023 Resolved
Arsenic MONITORING AND REPORTING — 0.010 mg/L 2023 Resolved
Public Notice OTHER — — 2023 Resolved
Revised Total Coliform Rule MONITORING FAILURE — — 2023 Resolved
Arsenic MONITORING AND REPORTING — 0.010 mg/L 2023 Resolved
Arsenic MONITORING AND REPORTING — 0.010 mg/L 2023 Resolved
Public Notice OTHER — — 2022 Resolved
Arsenic MONITORING AND REPORTING — 0.010 mg/L 2022 Resolved
Arsenic MONITORING AND REPORTING — 0.010 mg/L 2022 Resolved
TTHM MONITORING AND REPORTING — 0.080 mg/L 2022–2023 Resolved
Total Haloacetic Acids (HAA5) MONITORING AND REPORTING — 0.060 mg/L 2022–2023 Resolved
Arsenic MCL EXCEEDANCE 0.011 MG/L 0.010 mg/L 2022 Resolved
Arsenic MONITORING AND REPORTING — 0.010 mg/L 2022 Resolved
Arsenic MONITORING AND REPORTING — 0.010 mg/L 2022 Resolved
Public Notice OTHER — — 2022 Resolved
Public Notice OTHER — — 2022 Resolved
Public Notice OTHER — — 2022 Resolved
Arsenic MCL EXCEEDANCE 0.011 MG/L 0.010 mg/L 2022 Resolved
Arsenic MONITORING AND REPORTING — 0.010 mg/L 2022 Resolved
Arsenic MONITORING AND REPORTING — 0.010 mg/L 2022 Resolved
Revised Total Coliform Rule MONITORING FAILURE — — 2022 Resolved
Revised Total Coliform Rule MONITORING FAILURE — — 2022 Resolved
Arsenic MCL EXCEEDANCE 0.011 MG/L 0.010 mg/L 2022 Resolved
Arsenic MONITORING AND REPORTING — 0.010 mg/L 2022 Resolved
Arsenic MONITORING AND REPORTING — 0.010 mg/L 2022 Resolved
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2022 Resolved
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2022 Resolved
Public Notice OTHER — — 2021 Resolved
Groundwater Rule TREATMENT TECHNIQUE — — 2021 Resolved
Groundwater Rule TREATMENT TECHNIQUE — — 2021 Resolved
Groundwater Rule TREATMENT TECHNIQUE — — 2021 Resolved
Groundwater Rule TREATMENT TECHNIQUE — — 2021 Resolved
Arsenic MCL EXCEEDANCE 0.011 MG/L 0.010 mg/L 2021 Resolved
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2021 Resolved
Arsenic MONITORING AND REPORTING — 0.010 mg/L 2021 Resolved
Arsenic MONITORING AND REPORTING — 0.010 mg/L 2021 Resolved
Public Notice OTHER — — 2021 Resolved
Public Notice OTHER — — 2021 Resolved
Groundwater Rule OTHER — — 2021 Resolved
E. COLI MONITORING AND REPORTING — 0 2021 Resolved
Arsenic MCL EXCEEDANCE 0.011 MG/L 0.010 mg/L 2021 Resolved
Arsenic MONITORING AND REPORTING — 0.010 mg/L 2021 Resolved
Arsenic MONITORING AND REPORTING — 0.010 mg/L 2021 Resolved
Public Notice OTHER — — 2021 Resolved
Arsenic MCL EXCEEDANCE 0.011 MG/L 0.010 mg/L 2021 Resolved
Arsenic MONITORING AND REPORTING — 0.010 mg/L 2021 Resolved
Arsenic MONITORING AND REPORTING — 0.010 mg/L 2021 Resolved
Public Notice OTHER — — 2021 Resolved
Public Notice OTHER — — 2021 Resolved
Public Notice OTHER — — 2021 Resolved
Arsenic MONITORING AND REPORTING — 0.010 mg/L 2021 Resolved
Arsenic MONITORING AND REPORTING — 0.010 mg/L 2021 Resolved
Public Notice OTHER — — 2020 Resolved
Arsenic MCL EXCEEDANCE 0.011 MG/L 0.010 mg/L 2020 Resolved
Arsenic MONITORING AND REPORTING — 0.010 mg/L 2020 Resolved
Arsenic MONITORING AND REPORTING — 0.010 mg/L 2020 Resolved
TTHM MONITORING AND REPORTING — 0.080 mg/L 2020–2021 Resolved
Total Haloacetic Acids (HAA5) MONITORING AND REPORTING — 0.060 mg/L 2020–2021 Resolved
Arsenic MCL EXCEEDANCE 0.011 MG/L 0.010 mg/L 2020 Resolved
Arsenic MCL EXCEEDANCE 0.011 MG/L 0.010 mg/L 2020 Resolved
Revised Total Coliform Rule MONITORING FAILURE — — 2020 Resolved
Arsenic MCL EXCEEDANCE 0.011 MG/L 0.010 mg/L 2020 Resolved
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2020 Resolved
Asbestos MONITORING AND REPORTING — 7 MFL 2020–2022 Resolved
Arsenic MCL EXCEEDANCE 0.011 MG/L 0.010 mg/L 2019 Resolved
Lead and Copper Rule MONITORING AND REPORTING — TT 2019 Resolved
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2019 Resolved
Groundwater Rule TREATMENT TECHNIQUE — — 2019 Resolved
Arsenic MCL EXCEEDANCE 0.011 MG/L 0.010 mg/L 2019 Resolved
Arsenic MCL EXCEEDANCE 0.011 MG/L 0.010 mg/L 2018 Resolved
Consumer Confidence Rule OTHER — — 2018 Resolved
Arsenic MCL EXCEEDANCE 0.011 MG/L 0.010 mg/L 2018 Resolved
Arsenic MCL EXCEEDANCE 0.011 MG/L 0.010 mg/L 2018 Resolved
Arsenic MCL EXCEEDANCE 0.011 MG/L 0.010 mg/L 2018 Resolved
Arsenic MCL EXCEEDANCE 0.011 MG/L 0.010 mg/L 2017 Resolved
Arsenic MCL EXCEEDANCE 0.011 MG/L 0.010 mg/L 2017 Resolved
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2017 Resolved
Arsenic MCL EXCEEDANCE 0.011 MG/L 0.010 mg/L 2017 Resolved
Arsenic MCL EXCEEDANCE 0.011 MG/L 0.010 mg/L 2017 Resolved
Arsenic MCL EXCEEDANCE 0.011 MG/L 0.010 mg/L 2016 Resolved
Arsenic MCL EXCEEDANCE 0.011 MG/L 0.010 mg/L 2016 Resolved
Groundwater Rule TREATMENT TECHNIQUE — — 2016 Resolved
Groundwater Rule TREATMENT TECHNIQUE — — 2016 Resolved
Groundwater Rule TREATMENT TECHNIQUE — — 2016 Resolved
Groundwater Rule TREATMENT TECHNIQUE — — 2016 Resolved
Consumer Confidence Rule OTHER — — 2015 Resolved
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

8 violations remain open, out of 123 recorded since 2015 (45 health-based).

About the Main Water System

Utility Belen Water System
PWSID NM3524932
Water source Groundwater — Drawn from wells — SDWIS source code GW
Population served 7,281
Service connections 3,827
Systems serving this area 1
Regulator State primacy agency
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Belen tap water safe to drink? ▼
No federal limit is exceeded on record. 8 violation(s) remain open.
Does Belen water have PFAS? ▼
It was sampled, but no sampling point had enough results for a compliance determination.
Who supplies water to Belen? ▼
Belen Water System (PWSID NM3524932). Groundwater. Drawn from wells — SDWIS source code GW
When was this system last inspected? ▼
It was last inspected on 2025-06-25. Inspectors recorded 5 significant deficiencies.

What Should Belen 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
Follow the open violation
This system has an unresolved violation. Contact the supplier for its corrective-action schedule.

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