Radon · ZIP 87544
Radon in Los Alamos, NM
ZIP 87544 (New Mexico) — radon summary sourced from EPA Radon Zones. Refreshed on the cadence of the primary regulator with every claim cited to the source record.
Los Alamos County, New Mexico
Zone 2 — moderate potential
The EPA Map of Radon Zones classifies Los Alamos County as Zone 2 — a predicted average indoor radon screening level between 2 and 4 pCi/L. This is a county-level, 1993-baseline planning classification, not a measurement of any individual address in ZIP 87544.
The Map of Radon Zones should not be used to determine if individual homes need to be tested. No matter where you live, test your home for radon — it's easy and inexpensive.
What lands here
The county-level classification and EPA's own testing guidance for this ZIP's county — shown above.
Source & refresh
EPA Radon Zones. Refreshed static 1993 baseline plus state-level supplementary updates. Stale data is flagged, never silently served. Primary source →
Limitations specific to this source
Radon is a regional indicator. Address-level radon measurement requires an at-home test kit (often free from state health departments).
New Mexico context
Radon, wildfire, water-supply scarcity
New Mexico has Zone 1 radon coverage statewide. Wildfire risk in northern + central forests; the 2022 Hermits Peak/Calf Canyon Fire was the largest in NM history. Water-supply scarcity drives compliance pressure on small rural EPA SDWIS systems.
See New Mexico state page for the full state-level rollup across all 12 dimensions.
Read more on radon
Editorial deep-dives explaining the source data, its limits, and how to read it.
EPA Radon Zones — what 1, 2, and 3 mean and when you should test
EPA classifies every US county into Zone 1 (high), Zone 2 (moderate), or Zone 3 (low) for radon. Plain-English guide to the classifications and at-home testing.
EPA SDWIS — how to read drinking-water violations and what they actually mean
Plain-English guide to EPA SDWIS drinking-water violations: health-based vs. monitoring vs. reporting violations, MCLs, and what triggers a public notice.
Radon and real estate — what disclosure laws and home tests actually require
What home sellers must disclose about radon by state, when home tests are required, and how to interpret radon-mitigation systems if a home you're buying has one.
Radon disclosure during real-estate transactions — state-by-state
Whether sellers must disclose known radon results varies by state. Quick map of mandatory-disclosure states + what to ask for during inspection.
The other dimensions for ZIP 87544
Radon is one of twelve public-records dimensions zipradar indexes per address. See the ZIP 87544 index for the other eleven — each with its own regulator, source and link:
All dimensions for Los Alamos, NM →Frequently asked questions
What is the radon for ZIP 87544?
Los Alamos County, New Mexico (which covers ZIP 87544) is classified as EPA Radon Zone 2 — a predicted average indoor radon screening level between 2 and 4 pCi/L. This is a county-level, 1993-baseline planning classification, not an address-level measurement. The Map of Radon Zones should not be used to determine if individual homes need to be tested. No matter where you live, test your home for radon — it's easy and inexpensive.
Where does the radon data come from?
EPA Radon Zones (primary regulator). zipradar federates radon on the regulator's published cadence: static 1993 baseline plus state-level supplementary updates. Every claim cites the source record; stale data is flagged, never silently served. The primary source URL: https://www.epa.gov/radon/find-information-about-local-radon-zones-and-state-contact-information.
What are the limitations of radon data?
Radon is a regional indicator. Address-level radon measurement requires an at-home test kit (often free from state health departments).
Is ZIP 87544 (Los Alamos) data current?
Last verified 2026-09-07. Radon for ZIP 87544 refreshes static 1993 baseline plus state-level supplementary updates per EPA Radon Zones cadence. See the full ZIP dashboard at /zip/87544/ for all 12 dimensions side-by-side.