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County · New Mexico

San Juan County, New Mexico: drinking water records

Explore EPA records for 36 community water systems across 16 ZIP codes in San Juan County, then find water-testing resources and available recent monitoring-station readings.

In focus36Community water systems
Public records. Clearer context.

Data as of EPA UCMR 5 final release, August 2026 (file dated Aug 28, 2026) · EPA SDWIS 2026Q2 (file dated Jul 9, 2026). How we build these pages

Drinking-water records

EPA survey and compliance records are historical reports. UCMR 5 results are available for 10 of the 36 listed systems in this snapshot. A system with no reported PFAS detection is not a test of every tap or every contaminant.

10
systems in EPA's PFAS survey
0
systems where PFAS was found
0
systems at or above the PFOA or PFOS limit, on the yearly-average basis EPA uses
2
systems that have reached the lead action level
16
systems with a health-based violation since 2016

System population figures are summed from EPA registry records and can overlap where wholesalers and retail systems serve the same people. They are not a Census county-population estimate.

Water systems in this county

All 36 active community systems in the available county records, sorted by record completeness. Scroll the table to explore more systems.

Water systemPeople servedPFAS survey resultsPFAS foundHealth-based violationsLead, 9 in 10 homes at or below
Farmington Water System NM351022447,655240014 ppb
Farmington Rural-Shiprock-Beclabito Ntua NN350024515,233120022.5 ppb
Bloomfield Water Supply System NM35101249,5361200132 ppb
Lee Hammond Water NM35006248,817120040.8 ppb
Lower Valley Water Users Association NM35103247,615120030.5 ppb
Morningstar Water System NM35105245,694120020 ppb
Flora Vista Mutual Domestic NM35100243,72660060 ppb
Toadlena Ntua NN35030289031200362 ppb
Aztec Domestic Water System NM35098249,673120000.7 ppb
Northstar Mdwca NM35200243,784120000 ppb
Blanco Mdwca NM35315241,1480040.7 ppb
Navajo Dam Domestic Water Consumers INC NM3536724545002310 ppb
Apple Orchard Mdwca NM351152446000132 ppb
Dzilthnaodithhle Boarding School - Bie 09353402440000314 ppb
Mittenrock Ntua NN35030573520022 ppb
Rosa Joint Ventures Water System NM350032423900342 ppb
La Vida Mission Community Water Supply NM35002242000050 ppb
Pine River Mdca NM350102444002163 ppbat or above the action level
Upper la Plata Water Users Association NM35106242,2650000.6 ppb
Sanostee-Tocito Ntua NN35030591,9530002 ppb
Southside Mutual Domestic Water NM35099241,6090005 ppb
Naschitti-Bisola Ntua NN35002681,1730001 ppb
Carson-Huerfano Ntua NN35030631,1420003 ppb
Narbona Pass Ntua NN35030318620001 ppb
Nageezi Ntua NN35002967630001 ppb
Crystal Ntua NN35030127150001 ppb
Newcomb Ntua NN35030166020001 ppb
White Rock-Lake Valley Ntua NN35002694920001.5 ppb
Dzilth-Na-O-Dith-Hle Ntua NN35030454620002.1 ppb
Crystal Community Boarding School BIA NN35360052480006.2 ppb
Toadlena Boarding School BIA NN353201120000016 ppbat or above the action level
Keyah 1 Napi Ntua NN35030541330002 ppb
Beclabito Day School BIA NN35320031200000.5 ppb
Nenahnezad Community School BIA NN3532006800000.7 ppb
Hanaadli Huerfano Boarding School - Bie 093534006650000.9 ppb
Ngwsp Cutter Lateral NM35011240000not reported

Shaded rows report lead at or above the 15 ppb action level in their latest monitoring period. EPA sets that level for the value 9 in 10 sampled homes fall at or below; reaching it requires the utility to act, and it is not a measurement of any single tap. 2 systems in this table are at or above it. What an action level means

USGS · Monitoring stations

The water, more recently.

Available station readings in San Juan County, New Mexico. Each measurement keeps its time, unit and original source.

These readings describe water at a monitoring station. They do not test your tap, measure PFAS or lead, or determine whether water is safe to drink or swim in.

Recent observations load when this section comes into view.

Station coverage and available measurements vary by county.

Explore USGS Water Data
How these readings update

We check for updates every 10 minutes while this section is visible and show supported observations from the last 48 hours. The time beside a reading is when USGS measured it; the checked time is when our service retrieved the response. We mark a reading more than 6 hours old as older. Provisional observations can change after USGS review. A missing reading does not mean zero or clean water.

Temperature, pH, dissolved oxygen, turbidity, conductivity, streamflow and water level are shown only where a station reports them. Different measurements have different units and sampling intervals. USGS data and documentation.

Your next step

Water testing, reports & local help.

Use these official directories to find your drinking-water agency, a certified laboratory and public water records. We have not yet added an individually reviewed local resource list for this county.

Official national directories

Water testing

Find your state’s private-well program

EPA’s state directory points well owners to local program information. Services and eligibility vary by state and county.

U.S. Environmental Protection Agency
Source reviewed · Source updated

Water testing

Find a certified drinking-water laboratory

Use EPA’s directory to reach your state’s laboratory certification program. EPA does not provide on-request testing of residential drinking water.

U.S. Environmental Protection Agency
Source reviewed · Source updated

Public records

Find your utility’s Consumer Confidence Report

EPA links to community water-system reports and explains how to read them. Look for your actual supplier rather than assuming every address in a county shares one system.

U.S. Environmental Protection Agency
Source reviewed · Source updated

Public records

Explore USGS water observations

Find current and historical observations from USGS monitoring locations, including available stream, lake, and groundwater data. Measurements vary by station and do not replace a test of your household water.

U.S. Geological Survey
Source reviewed

A county overview cannot identify every property’s water provider. If you use a public water system, confirm its name on your bill and request its annual Consumer Confidence Report. Private wells need their own testing; public-system records do not describe a private well.

Understand water testing and laboratory reports

Resource descriptions are compiled by Tap Water Lookup. Review dates describe our source check, not a new water sample. How we review sources · Suggest a correction

Explore your area

Local coverage in San Juan County

16ZIP areas in this overview

Explore the water-system records, recent station readings and testing resources on this county page. They describe the systems and stations identified in each section; they are not a separate water test for every community.

Towns and communities

  • Aztec
  • Bloomfield
  • Farmington
  • Flora Vista
  • Kirtland
  • La Plata
  • Lake Valley
  • Nageezi
  • Navajo Dam
  • Newcomb
  • Sanostee
  • Sheep Springs
  • Shiprock
  • Upper Fruitland
  • Waterflow
Explore water-system recordsFind water-testing resources
View ZIP areas and understand coverage
  • 87037Nageezi
  • 87364Sheep Springs
  • 87401Farmington
  • 87402Farmington
  • 87410Aztec
  • 87413Bloomfield
  • 87415Flora Vista
  • 87416Upper Fruitland
  • 87417Kirtland
  • 87418La Plata
  • 87419Navajo Dam
  • 87420Shiprock
  • 87421Waterflow
  • 87455Newcomb
  • 87461Sanostee
  • 87499Lake Valley

These Census ZIP Code Tabulation Areas are grouped here by their largest county overlap. A ZIP area can cross county lines and contain several water suppliers or private wells. Place labels reflect Census geography, not verified postal city names or utility service boundaries.

Records for these areas are currently presented in this county overview rather than individual ZIP reports. An unpublished report does not mean there are no water records. Confirm your supplier on your water bill; if you use a private well, testing your own well is the relevant next step.

Beyond this county page

Keep reading. Compare nearby.

PFASReading PFAS survey resultsWhat a detection, a reporting level and a yearly average mean in EPA’s PFAS survey records.LeadChoosing a lead filter2 systems here have reached the lead action level. See how to check a filter’s lead-reduction certification.Your utilityFind your annual water reportConfirm the supplier on your bill, then read its Consumer Confidence Report for local results.

Counties near San Juan County

All New Mexico counties

Sources and scope

EPA UCMR 5 occurrence data, samples collected 2023-01-03 – 2026-06-17, final release, August 2026 (file dated Aug 28, 2026); EPA SDWIS via ECHO, 2026Q2 extract (file dated Jul 9, 2026); EPA service-area boundaries v3.0; Census 2020 ZCTAs. Database prepared 2026-09-03.

Counts cover the systems that report this county to EPA. A water system may cross county lines. "Found" means at least one result at or above the laboratory reporting level; it is not a compliance finding.

Compiled by Tap Water Lookup from the sources identified on this page. Read the methodology and review process.

Keep exploring

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part of the story.

Find a place. Read the measurements.
Understand the context.

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