Radon Testing and Mitigation in Monument, Colorado
Monument sits high on the Palmer Divide at the north end of El Paso County, a town that began as a railroad stop in 1872 and incorporated in 1879. Today it anchors the Tri-Lakes area between Colorado Springs and the Douglas County line, and its homes sit directly on the granite-derived terrain that makes this county a radon hot spot.
No agency publishes a Monument-only radon number, so the honest yardstick is the county figure below. Testing comes first, because the reading decides whether a system is needed at all. Testing and mitigation quotes for Monument homes are free and carry no obligation.
40%+
of El Paso County homes tested from 2005 to 2023 came back above the EPA action level of 4 pCi/L
Source: El Paso County Public Health6.4 pCi/L
the average indoor radon level in Colorado, well above the 4.0 pCi/L EPA action level
Source: El Paso County Public HealthWhy radon collects under Monument
Radon is produced by the decay of natural uranium in rock and soil, and the Colorado Geological Survey notes it occurs in all parts of Colorado. The Palmer Divide country around Monument is built from sediment shed off the Front Range, and the USGS identifies weathered Pikes Peak granite as a source of uranium and its decay products. Soil gas moving through that material collects under tightly built homes, especially in winter when heated indoor air pulls air up from the soil.
Sources: Colorado Geological Survey , USGS
Local housing and what it means for mitigation
Monument pairs a small 19th-century rail-town core with the subdivisions that arrived as the Tri-Lakes area grew in recent decades. For mitigation, the split matters less than the foundation under each house: homes with basements typically take a sub-slab suction point and a vent run to the roofline, sump-equipped homes can often use a sealed sump lid as the suction route, and slab or crawlspace sections get their own treatment. A licensed contractor confirms the layout during the diagnostic visit.
County radon help for Monument residents
El Paso County Public Health answers radon questions at (719) 578-3199, option 3, and sells test kits at the Public Health Laboratory, 1675 W. Garden of the Gods Road, Colorado Springs. CDPHE offers free kits statewide, one per household per year.