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Santa Teresa, NM Tap Water Quality 2026

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

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

Main Utility: Camino Real Regional Utility Authority PWSID: NM3502507 Updated: 2026 Q2
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2 violations currently open

Lead is 1.00 ppb, 7% of the action level. No PFAS was detected.

F

Santa Teresa earns an F for water quality

Graded on violations, lead, and PFAS, with state inspection findings.

Lead: 1.00 ppb — 7% of the federal action level
PFAS tested, none detected
170 violations since 2015, 93 health-based
2 violations currently open
Santa Teresa's lead level vs. all New Mexico community water systems
0 ppb5 ppb10 ppb15 ppb
Lead level: 1.00 ppb — 7% of the federal action level
✓ Lower lead than 82% of New Mexico utilities
Population Served
5020
~7318 connections
Water Source
Groundwater
Drawn from wells — SDWIS source code GW
Active Violations
2
2 open of 170 since 2015

Lead & Copper Testing

Lead (Pb)
90th percentile of tap samples collected across the distribution system
7% of EPA action level
1.00 ppb
Action level: 15 ppb
The 90th-percentile lead result is 1.00 ppb, 7% 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
Public Notice OTHER — — 2025 Resolved
Lead and Copper Rule MONITORING AND REPORTING — TT 2025 Resolved
Groundwater Rule TREATMENT TECHNIQUE — — 2024 Unaddressed
Arsenic MCL EXCEEDANCE 0.013 MG/L 0.010 mg/L 2024 Resolved
Arsenic MCL EXCEEDANCE 0.02 MG/L 0.010 mg/L 2024 Resolved
Arsenic MCL EXCEEDANCE 0.011 MG/L 0.010 mg/L 2024 Resolved
Lead and Copper Rule MONITORING AND REPORTING — TT 2024 Resolved
Public Notice OTHER — — 2024 Resolved
Groundwater Rule TREATMENT TECHNIQUE — — 2024 Unaddressed
Groundwater Rule TREATMENT TECHNIQUE — — 2024 Resolved
Arsenic MCL EXCEEDANCE 0.028 MG/L 0.010 mg/L 2024 Resolved
Lead and Copper Rule MONITORING AND REPORTING — TT 2024 Unaddressed
Groundwater Rule TREATMENT TECHNIQUE — — 2024 Resolved
Groundwater Rule TREATMENT TECHNIQUE — — 2024 Resolved
Groundwater Rule TREATMENT TECHNIQUE — — 2024 Resolved
Groundwater Rule TREATMENT TECHNIQUE — — 2024 Resolved
Groundwater Rule TREATMENT TECHNIQUE — — 2024 Resolved
Groundwater Rule TREATMENT TECHNIQUE — — 2024 Resolved
Groundwater Rule TREATMENT TECHNIQUE — — 2024 Resolved
Arsenic MCL EXCEEDANCE 0.011 MG/L 0.010 mg/L 2024 Resolved
Arsenic MCL EXCEEDANCE 0.026 MG/L 0.010 mg/L 2024 Resolved
Lead and Copper Rule MONITORING AND REPORTING — TT 2023 Unaddressed
Public Notice OTHER — — 2023 Resolved
Public Notice OTHER — — 2023 Resolved
Arsenic MCL EXCEEDANCE 0.014 MG/L 0.010 mg/L 2023 Resolved
Arsenic MCL EXCEEDANCE 0.017 MG/L 0.010 mg/L 2023 Resolved
Arsenic MCL EXCEEDANCE 0.015 MG/L 0.010 mg/L 2023 Resolved
Arsenic MCL EXCEEDANCE 0.015 MG/L 0.010 mg/L 2023 Resolved
Arsenic MCL EXCEEDANCE 0.017 MG/L 0.010 mg/L 2023 Resolved
Arsenic MCL EXCEEDANCE 0.018 MG/L 0.010 mg/L 2022 Resolved
Arsenic MCL EXCEEDANCE 0.018 MG/L 0.010 mg/L 2022 Resolved
Public Notice OTHER — — 2022 Resolved
Arsenic MCL EXCEEDANCE 0.018 MG/L 0.010 mg/L 2022 Resolved
Arsenic MCL EXCEEDANCE 0.017 MG/L 0.010 mg/L 2022 Resolved
Public Notice OTHER — — 2021 Resolved
Public Notice OTHER — — 2021 Unaddressed
Arsenic MCL EXCEEDANCE 0.017 MG/L 0.010 mg/L 2021 Resolved
Revised Total Coliform Rule MONITORING FAILURE — — 2021 Resolved
Arsenic MCL EXCEEDANCE 0.017 MG/L 0.010 mg/L 2021 Resolved
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2021 Resolved
Arsenic MCL EXCEEDANCE 0.016 MG/L 0.010 mg/L 2021 Resolved
Public Notice OTHER — — 2021 Resolved
Arsenic MCL EXCEEDANCE 0.017 MG/L 0.010 mg/L 2021 Resolved
Lead and Copper Rule MONITORING AND REPORTING — TT 2020 Unaddressed
E. COLI MONITORING AND REPORTING — 0 2020 Resolved
E. COLI MONITORING AND REPORTING — 0 2020 Resolved
Consumer Confidence Rule OTHER — — 2020 Resolved
Arsenic MCL EXCEEDANCE 0.017 MG/L 0.010 mg/L 2020 Resolved
Arsenic MCL EXCEEDANCE 0.019 MG/L 0.010 mg/L 2020 Resolved
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2020 Resolved
Arsenic MCL EXCEEDANCE 0.018 MG/L 0.010 mg/L 2020 Resolved
Groundwater Rule TREATMENT TECHNIQUE — — 2020 Resolved
Groundwater Rule TREATMENT TECHNIQUE — — 2020 Resolved
Groundwater Rule TREATMENT TECHNIQUE — — 2020 Resolved
Groundwater Rule TREATMENT TECHNIQUE — — 2020 Resolved
Groundwater Rule TREATMENT TECHNIQUE — — 2020 Resolved
Groundwater Rule TREATMENT TECHNIQUE — — 2020 Resolved
Arsenic MCL EXCEEDANCE 0.017 MG/L 0.010 mg/L 2020 Resolved
Asbestos MONITORING AND REPORTING — 7 MFL 2020–2022 Resolved
Arsenic MCL EXCEEDANCE 0.017 MG/L 0.010 mg/L 2019 Resolved
Arsenic MCL EXCEEDANCE 0.016 MG/L 0.010 mg/L 2019 Resolved
Arsenic MCL EXCEEDANCE 0.016 MG/L 0.010 mg/L 2019 Resolved
Arsenic MCL EXCEEDANCE 0.016 MG/L 0.010 mg/L 2019 Resolved
Arsenic MCL EXCEEDANCE 0.015 MG/L 0.010 mg/L 2018 Resolved
Public Notice OTHER — — 2018 Resolved
Arsenic MCL EXCEEDANCE 0.015 MG/L 0.010 mg/L 2018 Resolved
Public Notice OTHER — — 2018 Resolved
Arsenic MCL EXCEEDANCE 0.014 MG/L 0.010 mg/L 2018 Resolved
Public Notice OTHER — — 2018 Resolved
Public Notice OTHER — — 2018 Resolved
Public Notice OTHER — — 2018 Resolved
Arsenic MCL EXCEEDANCE 0.015 MG/L 0.010 mg/L 2018 Resolved
Lead and Copper Rule MONITORING AND REPORTING — TT 2017 Unaddressed
Arsenic MCL EXCEEDANCE 0.015 MG/L 0.010 mg/L 2017 Resolved
Public Notice OTHER — — 2017 Resolved
Public Notice OTHER — — 2017 Resolved
Public Notice OTHER — — 2017 Resolved
Arsenic MCL EXCEEDANCE 0.016 MG/L 0.010 mg/L 2017 Resolved
Public Notice OTHER — — 2017 Resolved
Arsenic MCL EXCEEDANCE 0.015 MG/L 0.010 mg/L 2017 Resolved
Public Notice OTHER — — 2017 Resolved
Arsenic MCL EXCEEDANCE 0.015 MG/L 0.010 mg/L 2017 Resolved
Public Notice OTHER — — 2016 Resolved
Public Notice OTHER — — 2016 Resolved
Public Notice OTHER — — 2016 Resolved
Public Notice OTHER — — 2016 Resolved
Public Notice OTHER — — 2016 Resolved
Public Notice OTHER — — 2016 Resolved
Public Notice OTHER — — 2016 Resolved
Public Notice OTHER — — 2016 Resolved
Public Notice OTHER — — 2016 Resolved
Public Notice OTHER — — 2016 Resolved
Public Notice OTHER — — 2016 Resolved
Public Notice OTHER — — 2016 Resolved
Public Notice OTHER — — 2016 Resolved
Public Notice OTHER — — 2016 Resolved
Public Notice OTHER — — 2016 Resolved
Public Notice OTHER — — 2016 Resolved
Public Notice OTHER — — 2016 Resolved
Public Notice OTHER — — 2016 Resolved
Public Notice OTHER — — 2016 Resolved
Public Notice OTHER — — 2016 Resolved
Public Notice OTHER — — 2016 Resolved
Public Notice OTHER — — 2016 Resolved
Public Notice OTHER — — 2016 Resolved
Public Notice OTHER — — 2016 Resolved
Public Notice OTHER — — 2016 Resolved
Public Notice OTHER — — 2016 Resolved
Public Notice OTHER — — 2016 Resolved
Public Notice OTHER — — 2016 Resolved
Public Notice OTHER — — 2016 Resolved
Public Notice OTHER — — 2016 Resolved
Public Notice OTHER — — 2016 Resolved
Public Notice OTHER — — 2016 Resolved
Public Notice OTHER — — 2016 Resolved
Public Notice OTHER — — 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
Groundwater Rule TREATMENT TECHNIQUE — — 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
Groundwater Rule TREATMENT TECHNIQUE — — 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
Groundwater Rule TREATMENT TECHNIQUE — — 2016 Resolved
Groundwater Rule TREATMENT TECHNIQUE — — 2016 Resolved
Groundwater Rule TREATMENT TECHNIQUE — — 2016 Resolved
Arsenic MCL EXCEEDANCE 0.02 MG/L 0.010 mg/L 2016 Resolved
Lead and Copper Rule MONITORING AND REPORTING — TT 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
Groundwater Rule TREATMENT TECHNIQUE — — 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
Groundwater Rule TREATMENT TECHNIQUE — — 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
Groundwater Rule TREATMENT TECHNIQUE — — 2016 Resolved
Groundwater Rule TREATMENT TECHNIQUE — — 2016 Resolved
Groundwater Rule TREATMENT TECHNIQUE — — 2016 Resolved
TTHM MONITORING AND REPORTING — 0.080 mg/L 2016 Resolved
Total Haloacetic Acids (HAA5) MONITORING AND REPORTING — 0.060 mg/L 2016 Resolved
Arsenic MCL EXCEEDANCE 0.028 MG/L 0.010 mg/L 2016 Resolved
Public Notice OTHER — — 2016 Resolved
Revised Total Coliform Rule OTHER — — 2016 Resolved
Arsenic MCL EXCEEDANCE 0.027 MG/L 0.010 mg/L 2016 Resolved
TTHM MONITORING AND REPORTING — 0.080 mg/L 2016 Resolved
Total Haloacetic Acids (HAA5) MONITORING AND REPORTING — 0.060 mg/L 2016 Resolved
Arsenic MCL EXCEEDANCE 0.019 MG/L 0.010 mg/L 2016 Resolved
Consumer Confidence Rule OTHER — — 2015 Resolved
Arsenic MCL EXCEEDANCE 0.019 MG/L 0.010 mg/L 2015 Resolved
Arsenic MCL EXCEEDANCE 0.016 MG/L 0.010 mg/L 2015 Resolved
Arsenic MCL EXCEEDANCE 0.022 MG/L 0.010 mg/L 2015 Resolved
TTHM MONITORING AND REPORTING — 0.080 mg/L 2015 Resolved
Total Haloacetic Acids (HAA5) MONITORING AND REPORTING — 0.060 mg/L 2015 Resolved
Public Notice OTHER — — 2015 Resolved
Public Notice OTHER — — 2015 Resolved
Arsenic MCL EXCEEDANCE 0.027 MG/L 0.010 mg/L 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

2 violations remain open, out of 170 recorded since 2015 (93 health-based).

About the Main Water System

Utility Camino Real Regional Utility Authority
PWSID NM3502507
Water source Groundwater — Drawn from wells — SDWIS source code GW
Population served 5,020
Service connections 7,318
Systems serving this area 3
Regulator State primacy agency
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Santa Teresa tap water safe to drink? ▼
No federal limit is exceeded on record. 2 violation(s) remain open. Lead is 1.00 ppb, 7% of the action level.
Does Santa Teresa water have PFAS? ▼
It was tested for the six regulated PFAS compounds and none were detected.
Who supplies water to Santa Teresa? ▼
Camino Real Regional Utility Authority (PWSID NM3502507), 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 2023-12-06. Inspectors recorded 6 significant deficiencies.

What Should Santa Teresa 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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