B66/100
LOS ALAMOS MUNICIPAL WATER SYSTEM — Water Quality Report 2026
Serving 25,000 people · New Mexico
Water Source
Groundwater
County
—
System ID
NM3500115
Violations
24
Contaminant Test Results
2 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
vanadium | 31.00 µg/L | — | Above Goal |
Lead (90th percentile) | < 0.001 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2016.
Understanding violation severity
Tier 1Urgent health risk. Utility must notify all customers within 24 hours.Tier 2Important health or treatment issue. Customers notified within 30 days.Tier 3Administrative or monitoring issue. Reported in the annual water quality report.
Source: EPA Safe Drinking Water Information System (SDWIS) · Updated quarterly
Frequently Asked Questions About LOS ALAMOS MUNICIPAL WATER SYSTEM
Is LOS ALAMOS MUNICIPAL WATER SYSTEM water safe to drink?
LOS ALAMOS MUNICIPAL WATER SYSTEM water receives a grade of B (66/100), which is considered good. Out of 66 contaminants tested, none exceed EPA legal limits. 2 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has LOS ALAMOS MUNICIPAL WATER SYSTEM detected?
66 contaminants were tested in LOS ALAMOS MUNICIPAL WATER SYSTEM's water. Notable contaminants include Lead (90th percentile), vanadium. No contaminants exceed EPA legal limits. 2 exceed EPA health goals (MCLGs).
Does LOS ALAMOS MUNICIPAL WATER SYSTEM have any EPA violations?
Yes, LOS ALAMOS MUNICIPAL WATER SYSTEM has 24 EPA violation(s) on record, with the most recent in 2016. Violation types include Other, MR, MCL. 1 are health-based violations.
How many people does LOS ALAMOS MUNICIPAL WATER SYSTEM serve?
LOS ALAMOS MUNICIPAL WATER SYSTEM serves approximately 25,000 people, New Mexico. The system provides water to 1 community: Los Alamos.
What type of water does LOS ALAMOS MUNICIPAL WATER SYSTEM provide?
LOS ALAMOS MUNICIPAL WATER SYSTEM sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is NM3500115.
How does LOS ALAMOS MUNICIPAL WATER SYSTEM compare to other utilities in New Mexico?
LOS ALAMOS MUNICIPAL WATER SYSTEM scores 66/100 with a grade of B (good). This is an above-average performance for utilities statewide. Visit our New Mexico state page for a full comparison of water systems.