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Lyden, NM Tap Water Quality 2026

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

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

Main Utility: Delancey Street Foundation PWSID: NM3511021 Updated: 2026 Q2
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10 violations currently open

Lead is 1.00 ppb, 7% of the action level. PFAS has never been sampled at this system.

F

Lyden earns an F for water quality

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

Lead: 1.00 ppb — 7% of the federal action level
PFAS never sampled at this system
57 violations since 2015, 21 health-based
10 violations currently open
Lyden'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
12
~4 connections
Water Source
Groundwater
Drawn from wells — SDWIS source code GW
Active Violations
10
10 open of 57 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
Copper (Cu)
90th percentile of tap samples. SDWIS reports a copper figure only when a system exceeds the action level, so any value here is an exceedance.
176.9% of EPA action level
2,300 ppb
Action level: 1,300 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. Copper reached the action level here; a copper figure appears in SDWIS only when a system triggers it.

Contaminant Violations (2015–Present)

ContaminantTypeMeasuredLimitPeriodStatus
Lead and Copper Rule MONITORING AND REPORTING — TT 2025 Unaddressed
Consumer Confidence Rule OTHER — — 2025 Resolved
Lead and Copper Rule MONITORING AND REPORTING — TT 2025 Resolved
Groundwater Rule TREATMENT TECHNIQUE — — 2024 Unaddressed
Groundwater Rule TREATMENT TECHNIQUE — — 2024 Unaddressed
Groundwater Rule TREATMENT TECHNIQUE — — 2024 Unaddressed
Groundwater Rule TREATMENT TECHNIQUE — — 2024 Unaddressed
Groundwater Rule TREATMENT TECHNIQUE — — 2024 Unaddressed
Groundwater Rule TREATMENT TECHNIQUE — — 2024 Unaddressed
Groundwater Rule TREATMENT TECHNIQUE — — 2024 Unaddressed
Groundwater Rule TREATMENT TECHNIQUE — — 2024 Unaddressed
Groundwater Rule TREATMENT TECHNIQUE — — 2024 Unaddressed
Groundwater Rule TREATMENT TECHNIQUE — — 2024 Unaddressed
LEAD AND COPPER RULE REVISIONS TREATMENT TECHNIQUE — — 2024 Addressed
LEAD AND COPPER RULE REVISIONS REPORTING FAILURE — — 2024 Addressed
Groundwater Rule OTHER — — 2024 Unaddressed
Lead and Copper Rule MONITORING AND REPORTING — TT 2024 Resolved
Lead and Copper Rule MONITORING AND REPORTING — TT 2024 Resolved
Consumer Confidence Rule OTHER — — 2023 Resolved
Consumer Confidence Rule OTHER — — 2023 Resolved
Lead and Copper Rule MONITORING AND REPORTING — TT 2023 Resolved
Lead and Copper Rule MONITORING AND REPORTING — TT 2023 Resolved
Consumer Confidence Rule OTHER — — 2022 Resolved
Lead and Copper Rule MONITORING AND REPORTING — TT 2022 Resolved
Lead and Copper Rule MONITORING AND REPORTING — TT 2022 Resolved
Consumer Confidence Rule OTHER — — 2021 Resolved
Lead and Copper Rule MONITORING AND REPORTING — TT 2021 Unaddressed
Consumer Confidence Rule OTHER — — 2021 Resolved
Lead and Copper Rule MONITORING AND REPORTING — TT 2021 Unaddressed
Lead and Copper Rule MONITORING AND REPORTING — TT 2020 Unaddressed
Lead and Copper Rule MONITORING AND REPORTING — TT 2019 Unaddressed
Consumer Confidence Rule OTHER — — 2019 Resolved
Consumer Confidence Rule OTHER — — 2018 Resolved
Public Notice OTHER — — 2018 Resolved
Public Notice OTHER — — 2018 Resolved
Public Notice OTHER — — 2017 Resolved
Public Notice OTHER — — 2017 Resolved
Consumer Confidence Rule OTHER — — 2017 Resolved
Groundwater Rule TREATMENT TECHNIQUE — — 2017 Resolved
Groundwater Rule TREATMENT TECHNIQUE — — 2017 Resolved
Groundwater Rule TREATMENT TECHNIQUE — — 2017 Resolved
Groundwater Rule TREATMENT TECHNIQUE — — 2017 Resolved
Groundwater Rule TREATMENT TECHNIQUE — — 2017 Resolved
Groundwater Rule TREATMENT TECHNIQUE — — 2017 Resolved
Lead and Copper Rule MONITORING AND REPORTING — TT 2017 Resolved
Groundwater Rule TREATMENT TECHNIQUE — — 2017 Resolved
Groundwater Rule TREATMENT TECHNIQUE — — 2017 Resolved
Groundwater Rule TREATMENT TECHNIQUE — — 2017 Resolved
Groundwater Rule TREATMENT TECHNIQUE — — 2017 Resolved
Revised Total Coliform Rule MONITORING FAILURE — — 2016 Resolved
Revised Total Coliform Rule MONITORING FAILURE — — 2016 Resolved
Revised Total Coliform Rule MONITORING FAILURE — — 2016 Resolved
Revised Total Coliform Rule OTHER — — 2016 Resolved
Revised Total Coliform Rule MONITORING FAILURE — — 2016 Resolved
Lead and Copper Rule MONITORING AND REPORTING — TT 2016 Resolved
Lead and Copper Rule MONITORING AND REPORTING — TT 2015 Resolved
Lead and Copper Rule MONITORING AND REPORTING — TT 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

10 violations remain open, out of 57 recorded since 2015 (21 health-based).

About the Main Water System

Utility Delancey Street Foundation
PWSID NM3511021
Water source Groundwater — Drawn from wells — SDWIS source code GW
Population served 12
Service connections 4
Systems serving this area 1
Regulator State primacy agency
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Lyden tap water safe to drink? ▼
No federal limit is exceeded on record. 10 violation(s) remain open. Lead is 1.00 ppb, 7% of the action level.
Does Lyden 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 Lyden? ▼
Delancey Street Foundation (PWSID NM3511021). Groundwater. Drawn from wells — SDWIS source code GW
When was this system last inspected? ▼
It was last inspected on 2024-05-09. Inspectors recorded 4 significant deficiencies.

What Should Lyden 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.

Nearby Cities in New Mexico

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