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Tap water quality report

Los Alamos, NM

EPA monitoring detected 2 contaminants across the 1 water supplier serving Los Alamos. A detection doesn't automatically mean the water is unsafe — see the highest level found for each below, with its EPA source and period.

1
water supplier
25,000
people served
2
contaminants found
New Mexico rankings Lead in New Mexico PFAS in New Mexico

What was found in Los Alamos's water

The highest level seen across the city's suppliers, the EPA limit for each, and where the figure comes from.

ContaminantLevel vs EPA limitSuppliersSource
Lithium
33.8 µg/L
No EPA limit set
 1/1 UCMR-5
Lead
0.00077 mg/L 5.1%
of the EPA limit 0.0150 mg/L
 1/1 LCR
Each bar shows the measured level as a share of the EPA limit: green is well under, amber is close to it, red is over. For lead and copper the limit applies to exactly the 90th-percentile figure shown, so red there means a real exceedance. For everything else the limit applies to a running annual average while the figure is the single worst sample on record — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately. These are the utilities' own EPA-reported results, not a city-wide average. A detection means the lab measured the substance — it isn't the same as exceeding a legal limit. Hover a source tag to see the EPA program and years behind each figure.

Water suppliers serving Los Alamos

SupplierPopulation served
LOS ALAMOS MUNICIPAL WATER SYSTEM 25,000

Frequently asked questions about Los Alamos tap water

Is Los Alamos tap water safe to drink?

EPA testing detected 2 contaminants in the water serving Los Alamos. A detection isn't the same as a violation — most detected levels are within federal limits. Check the level and source for each contaminant above, and your utility's annual Consumer Confidence Report for the official compliance status.

How many water suppliers serve Los Alamos?

1 public water supplier report drinking-water monitoring for Los Alamos, New Mexico to the EPA. Each is listed above with its population served.

What contaminants are in Los Alamos's water?

The contaminants EPA monitoring detected in Los Alamos include Lithium, Lead. The full list, with the highest level found and the data source, is in the table above.

Where does this data come from?

Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.