COLORADO - EPA Map of Radon Zones
The purpose of this map is to assist National, State and local organizations to target their resources and to
implement radon-resistant building codes.
This map is not intended to determine if a home in a given zone should be tested for radon.
Homes with elevated levels of radon have been found in all three zones.
All homes should be tested, regardless of zone designation.
http://www.epa.gov/radon/zonemap.html
MOFFAT
JACKSON
SEDGWICK
LARIMER
ROUTT
LOGAN
WELD
PHILLIPS
GRAND
RIO BLANCO
MORGAN
BOULDER
GILPIN.
DENVER
WASHINGTON
ADAMS
GARFIELD
ARAPAHOE
MESA
DOUGLAS
LAKE
PARK
KIT CARSON
DELTA
LINCOLN
GUNNISON
EL PASO
MONTROSE
CHEYENNE
FREMONT
OURA>
SAN MIGUEL
KIOWA
CROWLEY
HINSDALE
SAGUACHE
PUEBLO
MINERALl
BENT
PROWERS
MONTEZUMA
HUERFANO
RIO GRANDE,1 ALAMOSA
LA PLATA
ARCHULETA
LAS ANIMAS
CONEJOS
COSTILLA
BACA
IMPORTANT: Consult the publication entitled "Preliminary
Geologic Radon Potential Assessment of Colorado" (USGS
Open-file Report 93-292-H) before using this map.
http://energy.cr.usgs.gov/radon/grpinfo.html This document
contains information on radon potential variations within
counties. EPA also recommends that this map be
supplemented with any available local data in order to further
understand and predict the radon potential of a specific area.
Zone 1
Zone 2 Zone 3

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