Radon Mitigation in Grand Junction, CO

How Radon Mitigation Works

Radon mitigation is the process of installing a vent system that captures radon gas beneath your foundation and releases it above the roof, before it can build up in the air you breathe. For the vast majority of Grand Valley homes, that means an active sub-slab depressurization (ASD) system: a sealed PVC pipe drawn through the slab or crawl space, an inline fan that runs continuously, and a discharge point above the eave.

The physics are simple and reliable. Radon comes from uranium in the soil and rock decaying into radium and then into radon gas, which seeps up through cracks, sumps, and the pores in concrete. A mitigation fan puts the soil under your slab at slightly lower pressure than the house, so the gas follows the pipe out instead of drifting up into your living space. Done correctly, it is one of the most dependable fixes in the building trades — and it keeps working for as long as the fan runs.

A standard install with Grand Junction Radon includes:

• Diagnostics. We locate the best suction point and check sub-slab communication so the system is sized right the first time.
• Sealing. Slab cracks, sump lids, and the pipe penetration are sealed so the fan pulls from the soil, not your basement.
• Installation. Piping, a correctly rated fan, and a visible U-tube manometer so you can confirm the system is working at a glance.
• Verification. A post-mitigation radon test confirms the level dropped below 4.0 pCi/L. If it hasn't, we adjust until it has.

Why the Grand Valley Tests High for Radon

Mesa County sits in EPA Radon Zone 1 — the highest of the three national zones, defined by a predicted average indoor level above the 4.0 pCi/L action level. That isn't a scare statistic; it's geology. Western Colorado sits on uranium-bearing rock of the Colorado Plateau, and statewide, the Colorado Department of Public Health and Environment reports that about half of Colorado homes have radon levels above the EPA action level. In Mesa County specifically, roughly a third of the homes tested through the state program come back at or above 4.0 pCi/L.

The Grand Valley also carries a unique radon history. In the 1950s and 60s, radioactive tailings from the Climax Uranium Mill on the Colorado River were given away and used as cheap construction fill under and around thousands of local homes and buildings — a mistake that later triggered one of the largest residential radiation cleanups in the country. It's the reason Grand Junction has been radon- and radiation-aware for longer than almost anywhere in America. Read the full story of radon in the Grand Valley →

The takeaway for a homeowner is straightforward: zone maps and county averages can't tell you what's happening in your house. The only way to know is to test — and if the number is high, to fix it.

Why Homeowners Call Grand Junction Radon

• Licensed Colorado radon professionals. Colorado has required radon measurement and mitigation pros to be state-licensed since 2022. We meet that standard and build to the national ANSI/AARST codes — not every outfit in the valley does.
• We prove the fix. Every mitigation job ends with a verification test. You get documentation showing your level before and after, which also matters when you sell.
• Firm pricing, no pressure. You get a written price before any work starts, and an honest answer about whether you even need us.
• Built for real-estate deadlines. Under contract with a high radon result? We schedule fast and coordinate with your agent so the deal stays on track.
• Local. We work the Grand Valley every day — Grand Junction, Fruita, Palisade, Clifton, Orchard Mesa, the Redlands, and out to Delta and Montrose.