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Tap water quality report

Los Alamos Municipal Water

EPA monitoring tested this supplier for 31 contaminants and detected 2. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

31
contaminants tested
2
detected
25,000
people served
2
health-based violations
New Mexico rankingsLead in New MexicoPFAS in New Mexico
Water source
Ground water
Ownership
Local government
Counties served
Los Alamos

Compliance record

Formal violations the EPA has on file for this supplier. A health-based violation means a contaminant limit or a required treatment was breached; the rest are monitoring or reporting failures — still violations, but not a measured health risk.

2
health-based violations
66
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 1993-08-01 → 1993-08-31
MCL Health-based Resolved 1993-08-01 → 1993-08-31
Other Monitoring Resolved 2016-02-01
MR Monitoring Resolved 2014-10-01
MR Monitoring Resolved 2014-10-01
MR Monitoring Resolved 2014-10-01
MR Monitoring Resolved 2014-10-01
MR Monitoring Resolved 2014-10-01 → 2014-12-31
MR Monitoring Resolved 2014-10-01 → 2014-12-31
MR Monitoring Resolved 2014-10-01 → 2014-12-31

Other contaminants detected

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 95th percentile of this system's samples — over 100% is worth reading, but is not by itself a violation. Where a single sample came in higher than that percentile, it is noted under the bar. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Lead
0.00077 mg/L 5.1%
of the EPA limit 0.0150 mg/L
 17/17 LCR 2024
Lithium
33.8 µg/L
No EPA limit set
 6/6 UCMR-5 2023
29 contaminants tested, none detected
11Cl-PF3OUdS4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaHfpo-DaNetfosaaNfdhaNmefosaaPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfuna

Utility contact

Contact
GOMEZ, DAVID
Phone
505-662-8157
Email
[email protected]

Frequently asked questions about Los Alamos Municipal Water

Is Los Alamos Municipal Water tap water safe to drink?

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

What contaminants were detected in Los Alamos Municipal Water's water?

EPA monitoring detected Lead, Lithium. The full list with the level and data source for each is above.

How many people does Los Alamos Municipal Water serve?

Los Alamos Municipal Water reports serving 25,000 people in New Mexico, per its EPA record.

Has Los Alamos Municipal Water had any water quality violations?

The EPA has 66 violations on file for Los Alamos Municipal Water, of which 2 are health-based (a contaminant limit or required treatment was breached) and 0 remain open. The rest are monitoring or reporting failures.

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.