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Navajo Dam, NM Tap Water Quality 2026

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

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

Main Utility: Navajo Dam Domestic Water Consumers Inc PWSID: NM3536724 Updated: 2026 Q2
✅

No federal limits exceeded on record

Lead is 10.00 ppb, 67% of the action level and no violations are open. PFAS has never been sampled at this system.

C

Navajo Dam earns a C for water quality

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

Lead: 10.00 ppb — 67% of the federal action level
PFAS never sampled at this system
56 violations since 2015, 27 health-based
No violations currently open
Navajo Dam's lead level vs. all New Mexico community water systems
0 ppb5 ppb10 ppb15 ppb
Lead level: 10.00 ppb — 67% of the federal action level
✓ Lower lead than 5% of New Mexico utilities
Population Served
184
~183 connections
Water Source
Surface water
Drawn from surface water — SDWIS source code SW
Active Violations
0
56 since 2015, all resolved

Lead & Copper Testing

Lead (Pb)
90th percentile of tap samples collected across the distribution system
67% of EPA action level
10.00 ppb
Action level: 15 ppb
The 90th-percentile lead result is 10.00 ppb, 67% 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
Surface Water Treatment Rule MONITORING AND REPORTING — — 2026 Archived
Interim Enhanced Surface Water Treatment Rule MONITORING AND REPORTING — — 2026 Archived
Lead and Copper Rule MONITORING AND REPORTING — TT 2025 Unaddressed
Consumer Confidence Rule OTHER — — 2025 Unaddressed
TTHM MCL EXCEEDANCE 0.086 MG/L 0.080 mg/L 2023 Resolved
TTHM MCL EXCEEDANCE 0.091 MG/L 0.080 mg/L 2022 Resolved
Public Notice OTHER — — 2022 Resolved
Public Notice OTHER — — 2022 Resolved
TTHM MCL EXCEEDANCE 0.1 MG/L 0.080 mg/L 2022 Resolved
TTHM MCL EXCEEDANCE 0.096 MG/L 0.080 mg/L 2022 Resolved
Public Notice OTHER — — 2022 Resolved
Public Notice OTHER — — 2022 Resolved
TTHM MCL EXCEEDANCE 0.118 MG/L 0.080 mg/L 2022 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
Public Notice OTHER — — 2021 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.129 MG/L 0.060 mg/L 2021 Resolved
TTHM MCL EXCEEDANCE 0.171 MG/L 0.080 mg/L 2021 Resolved
TTHM MCL EXCEEDANCE 0.114 MG/L 0.080 mg/L 2021 Resolved
Public Notice OTHER — — 2021 Resolved
Public Notice OTHER — — 2021 Resolved
Consumer Confidence Rule OTHER — — 2021 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.134 MG/L 0.060 mg/L 2021 Resolved
TTHM MCL EXCEEDANCE 0.179 MG/L 0.080 mg/L 2021 Resolved
Public Notice OTHER — — 2021 Resolved
Public Notice OTHER — — 2021 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.133 MG/L 0.060 mg/L 2021 Resolved
TTHM MCL EXCEEDANCE 0.178 MG/L 0.080 mg/L 2021 Resolved
Public Notice OTHER — — 2021 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.136 MG/L 0.060 mg/L 2021 Resolved
TTHM MCL EXCEEDANCE 0.178 MG/L 0.080 mg/L 2021 Resolved
TTHM MCL EXCEEDANCE 0.102 MG/L 0.080 mg/L 2020 Resolved
TTHM MCL EXCEEDANCE 0.085 MG/L 0.080 mg/L 2020 Resolved
Consumer Confidence Rule OTHER — — 2020 Resolved
Consumer Confidence Rule OTHER — — 2020 Resolved
TTHM MCL EXCEEDANCE 0.098 MG/L 0.080 mg/L 2020 Resolved
Public Notice OTHER — — 2020 Resolved
TTHM MCL EXCEEDANCE 0.083 MG/L 0.080 mg/L 2020 Resolved
TTHM MCL EXCEEDANCE 0.081 MG/L 0.080 mg/L 2020 Resolved
Consumer Confidence Rule OTHER — — 2019 Resolved
Consumer Confidence Rule OTHER — — 2019 Resolved
Public Notice OTHER — — 2018 Resolved
TTHM MCL EXCEEDANCE 0.085 MG/L 0.080 mg/L 2018 Resolved
TTHM MCL EXCEEDANCE 0.086 MG/L 0.080 mg/L 2018 Resolved
Public Notice OTHER — — 2017 Resolved
TTHM MCL EXCEEDANCE 0.083 MG/L 0.080 mg/L 2017 Resolved
TTHM MCL EXCEEDANCE 0.082 MG/L 0.080 mg/L 2017 Resolved
Consumer Confidence Rule OTHER — — 2016 Resolved
TTHM MCL EXCEEDANCE 0.097 MG/L 0.080 mg/L 2016 Resolved
Revised Total Coliform Rule OTHER — — 2016 Resolved
TTHM MCL EXCEEDANCE 0.095 MG/L 0.080 mg/L 2016 Resolved
TTHM MCL EXCEEDANCE 0.094 MG/L 0.080 mg/L 2015 Resolved
TTHM MCL EXCEEDANCE 0.085 MG/L 0.080 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
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

56 violations are on record since 2015, of which 27 were health-based. All have been resolved and none remain open.

About the Main Water System

Utility Navajo Dam Domestic Water Consumers Inc
PWSID NM3536724
Water source Surface water — Drawn from surface water — SDWIS source code SW
Population served 184
Service connections 183
Systems serving this area 2
Regulator State primacy agency
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Navajo Dam tap water safe to drink? ▼
No federal limit is exceeded on record. No violations are currently open. Lead is 10.00 ppb, 67% of the action level.
Does Navajo Dam 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 Navajo Dam? ▼
Navajo Dam Domestic Water Consumers Inc (PWSID NM3536724), one of 2 systems serving this area. Surface water. Drawn from surface water — SDWIS source code SW
When was this system last inspected? ▼
It was last inspected on 2023-08-01. Inspectors recorded 1 significant deficiency.

What Should Navajo Dam Residents Do?

1
Consider a filter certified for lead
Look for NSF/ANSI 53 certification for lead reduction.
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.

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