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Alcalde, NM Tap Water Quality 2026

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

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

Main Utility: Alcalde Mdwca PWSID: NM3535021 Updated: 2026 Q2
✅

No federal limits exceeded on record

Lead is 0.56 ppb, 4% of the action level and no violations are open. PFAS has never been sampled at this system.

C

Alcalde earns a C for water quality

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

Lead: 0.56 ppb — 4% of the federal action level
PFAS never sampled at this system
44 violations since 2015, 25 health-based
No violations currently open
Alcalde's lead level vs. all New Mexico community water systems
0 ppb5 ppb10 ppb15 ppb
Lead level: 0.56 ppb — 4% of the federal action level
✓ Lower lead than 95% of New Mexico utilities
Population Served
310
~309 connections
Water Source
Groundwater
Drawn from wells — SDWIS source code GW
Active Violations
0
44 since 2015, all resolved

Lead & Copper Testing

Lead (Pb)
90th percentile of tap samples collected across the distribution system
4% of EPA action level
0.56 ppb
Action level: 15 ppb
The 90th-percentile lead result is 0.56 ppb, 4% of the 15 ppb federal action level. The action level is a treatment trigger, not a legal maximum, and it is measured across sampled taps rather than at any single home.

Contaminant Violations (2015–Present)

ContaminantTypeMeasuredLimitPeriodStatus
Arsenic MCL EXCEEDANCE 0.013 MG/L 0.010 mg/L 2026 Archived
Arsenic MCL EXCEEDANCE 0.011 MG/L 0.010 mg/L 2025 Resolved
Arsenic MCL EXCEEDANCE 0.016 MG/L 0.010 mg/L 2025 Resolved
Public Notice OTHER — — 2025 Unaddressed
Arsenic MCL EXCEEDANCE 0.026 MG/L 0.010 mg/L 2025 Resolved
Arsenic MCL EXCEEDANCE 0.068 MG/L 0.010 mg/L 2024 Resolved
Arsenic MCL EXCEEDANCE 0.074 MG/L 0.010 mg/L 2024 Resolved
Arsenic MCL EXCEEDANCE 0.073 MG/L 0.010 mg/L 2024 Resolved
Arsenic MCL EXCEEDANCE 0.06 MG/L 0.010 mg/L 2024 Resolved
Arsenic MCL EXCEEDANCE 0.018 MG/L 0.010 mg/L 2023 Resolved
Arsenic MCL EXCEEDANCE 0.013 MG/L 0.010 mg/L 2023 Resolved
TTHM MONITORING AND REPORTING — 0.080 mg/L 2021–2022 Resolved
Total Haloacetic Acids (HAA5) MONITORING AND REPORTING — 0.060 mg/L 2021–2022 Resolved
Public Notice OTHER — — 2021 Resolved
Arsenic MCL EXCEEDANCE 0.025 MG/L 0.010 mg/L 2019 Resolved
Arsenic MCL EXCEEDANCE 0.027 MG/L 0.010 mg/L 2019 Resolved
Arsenic MCL EXCEEDANCE 0.027 MG/L 0.010 mg/L 2019 Resolved
Arsenic MCL EXCEEDANCE 0.024 MG/L 0.010 mg/L 2019 Resolved
Lead and Copper Rule MONITORING AND REPORTING — TT 2018 Resolved
TTHM MONITORING AND REPORTING — 0.080 mg/L 2018–2019 Resolved
Total Haloacetic Acids (HAA5) MONITORING AND REPORTING — 0.060 mg/L 2018–2019 Resolved
Public Notice OTHER — — 2018 Resolved
Arsenic MCL EXCEEDANCE 0.017 MG/L 0.010 mg/L 2018 Resolved
Public Notice OTHER — — 2018 Resolved
Arsenic MCL EXCEEDANCE 0.022 MG/L 0.010 mg/L 2018 Resolved
Public Notice OTHER — — 2017 Resolved
Public Notice OTHER — — 2017 Resolved
Public Notice OTHER — — 2017 Resolved
Arsenic MCL EXCEEDANCE 0.026 MG/L 0.010 mg/L 2017 Resolved
Public Notice OTHER — — 2017 Resolved
Arsenic MCL EXCEEDANCE 0.023 MG/L 0.010 mg/L 2017 Resolved
Public Notice OTHER — — 2017 Resolved
Public Notice OTHER — — 2017 Resolved
Arsenic MCL EXCEEDANCE 0.014 MG/L 0.010 mg/L 2017 Resolved
Arsenic MCL EXCEEDANCE 0.011 MG/L 0.010 mg/L 2017 Resolved
Arsenic MCL EXCEEDANCE 0.048 MG/L 0.010 mg/L 2016 Resolved
Consumer Confidence Rule OTHER — — 2016 Resolved
Revised Total Coliform Rule MONITORING FAILURE — — 2016 Resolved
Arsenic MCL EXCEEDANCE 0.055 MG/L 0.010 mg/L 2016 Resolved
Revised Total Coliform Rule OTHER — — 2016 Resolved
Revised Total Coliform Rule MONITORING FAILURE — — 2016 Resolved
Arsenic MCL EXCEEDANCE 0.053 MG/L 0.010 mg/L 2016 Resolved
Arsenic MCL EXCEEDANCE 0.05 MG/L 0.010 mg/L 2016 Resolved
Groundwater Rule TREATMENT TECHNIQUE — — 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

44 violations are on record since 2015, of which 25 were health-based. All have been resolved and none remain open.

About the Main Water System

Utility Alcalde Mdwca
PWSID NM3535021
Water source Groundwater — Drawn from wells — SDWIS source code GW
Population served 310
Service connections 309
Systems serving this area 1
Regulator State primacy agency
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Alcalde tap water safe to drink? ▼
No federal limit is exceeded on record. No violations are currently open. Lead is 0.56 ppb, 4% of the action level.
Does Alcalde 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 Alcalde? ▼
Alcalde Mdwca (PWSID NM3535021). Groundwater. Drawn from wells — SDWIS source code GW
When was this system last inspected? ▼
It was last inspected on 2023-05-11. Inspectors recorded 3 significant deficiencies.

What Should Alcalde 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

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