Water in New Mexico.
Natural arsenic in desert groundwater affects systems statewide. Cannon Air Force Base PFAS contamination near Clovis has driven major regional litigation. Multiple Native American communities face exceedances.
How New Mexico regulates drinking water.
Federal SDWA primacy. State leads multi-state Cannon AFB litigation. No state MCLs stricter than federal.
New Mexico Environment Department — Drinking Water Bureau
New Mexico's water history, in order.
The contamination events, regulatory shifts, and major settlements that define how this state thinks about drinking water today.
- 2018
Cannon AFB PFAS contamination identified in Clovis-area dairy operations.
- 2019
New Mexico sues Department of Defense over Cannon AFB PFAS damages.
- 2023
Multi-million-dollar federal settlement reached for Cannon-area dairy losses.
The actual water you drink.
The physical rivers, aquifers, lakes, and reservoirs that feed New Mexico's public water systems. Source quality is the foundation of tap quality — and where the long-term protection fights happen.
- riverRio Grande
Central + south NM including Albuquerque.
- riverSan Juan-Chama Diversion
Diverted Colorado Basin water to Rio Grande Valley.
- reservoirSanta Fe River + reservoirs
Santa Fe metro.
- aquiferOgallala Aquifer
Eastern NM agriculture.
Source-water mix
~80% groundwater, ~20% surface water
Major cities served
Albuquerque · Las Cruces · Rio Rancho · Santa Fe
Who actually serves the water.
The largest public water systems in New Mexico by population served. Click your ZIP after to see the full live EWG report for your specific utility.
- Albuquerque Bernalillo County Water Utility AuthorityAlbuquerque660Kserved
- Las Cruces UtilitiesLas Cruces105Kserved
- Santa Fe Water DivisionSanta Fe85Kserved
Where the contamination comes from.
Every state has a different industrial fingerprint. The industries below are the dominant historical and active contamination sources in New Mexico's drinking water systems.
Cannon AFB and Holloman AFB PFAS contamination affect Clovis-area dairy and Alamogordo communities. Los Alamos National Lab and Sandia legacy radiological groundwater plumes. Uranium mining (Navajo Nation) — among the most-contaminated tribal-land water in the U.S.
What state data flags most consistently.
Drawn from EPA SDWIS sampling records, EWG state summaries, and regional regulatory action over the past five years. Read the full deep dive on each.
Arsenic
A naturally occurring carcinogen. Highest in private wells and the rural Southwest.
PFAS (Forever Chemicals)
A class of ~15,000 synthetic chemicals that don't break down. Now regulated for the first time.
Nitrate
Fertilizer and animal waste runoff. Acutely dangerous for infants under 6 months.
Risk isn't evenly distributed.
Navajo Nation communities face the highest combined uranium, arsenic, and infrastructure-gap exposure in the U.S. Cannon-area residents face PFAS.
~12% on private wells, with significant tribal-land coverage gaps.
What's coming for New Mexico's water.
Rio Grande drought reaches historic levels; reservoir storage at multi-decade lows. Aquifer drawdown accelerates statewide. Wildfire burn-scar runoff (Hermits Peak / Calf Canyon 2022) damaged source watersheds.
Voluntary statewide
NM Environment Department provides voluntary technical assistance.
Five questions for your next Consumer Confidence Report.
Your utility is required to send you a Consumer Confidence Report annually. Most are dense and procedural. These are the questions worth following up on for New Mexico specifically.
- 1
If I'm in Clovis or Curry County, is my well in the Cannon AFB PFAS zone?
- 2
If I'm on Navajo Nation, has my well been tested for uranium and arsenic?
- 3
Has my Rio Grande-served utility activated drought-related supply restrictions?
Most state regulators allow public records requests for the underlying lab reports behind your CCR — your utility should be able to provide them on request.
What's changed in New Mexico water law.
Drinking water regulation moves at the state level as much as the federal level. Below are notable recent bills and regulatory actions specific to New Mexico.
- 2022
NM PFAS Defense Authorization legislation — multi-million federal settlement framework.
NSF/ANSI 58 reverse osmosis is the most reliable for arsenic, PFAS, and nitrate in one system.
We don't recommend brands — the NSF/ANSI certification number matters more than the name on the box.
This is the state. Your address is the answer.
State-level patterns don't tell you about your specific tap. Run your ZIP for the live EWG contaminant report on your utility — or build a personalized Water File for your household.
Source-water mix, utility counts, lead-service-line estimates, and private-well shares are approximate, drawn from EPA SDWIS public data and state primacy-agency summaries. Contaminant rankings reflect EWG state-level monitoring data and regional regulatory action — they are not exhaustive. Timeline events are publicly documented. See methodology for the full sourcing. Search EPA SDWIS for New Mexico