Radon Mitigation in Delta, CO

Radon Testing & Mitigation for Delta Homes

Delta is the seat of Delta County, sitting where the Gunnison and Uncompahgre rivers meet at the south end of the region we serve. Known as the "City of Murals" for the painted scenes across its downtown, it's an agricultural community about 40 minutes south of our Grand Junction base on Highway 50. Delta is an adjacent county, not Mesa County — but it's a legitimate, regular part of our service area, and the radon story here is fundamentally the same as it is up the valley.

That's because the geology doesn't stop at the county line. Delta sits on the same uranium-bearing rock of the Colorado Plateau — the Morrison Formation and the mineral belts of western Colorado — that produces radon across the whole Western Slope. Statewide, the Colorado Department of Public Health and Environment reports that about half of Colorado homes test above the EPA action level of 4.0 pCi/L. A home's actual number depends on its specific soil and how it's built, which is exactly why testing matters: a river-bottom farmhouse and a newer home up on the bench can read very differently, and only a test tells you which is which.

What shapes radon risk in Delta:

• Same plateau rock. Delta's ground is the uranium-bearing Colorado Plateau geology that produces radon throughout western Colorado.
• River-confluence soils. Homes near the Gunnison and Uncompahgre sit on varied terrace and valley soils that draw radon up through slabs and crawl spaces.
• Older housing stock. Delta's historic downtown homes often have crawl spaces and older basements that give soil gas easy paths indoors.

Radon is the second-leading cause of lung cancer overall and the number one cause among people who have never smoked. For a Delta homeowner, the message is the same as anywhere on the plateau: a short-term test tells you your number in as little as 48 hours, and if it comes back high, a mitigation system removes the risk permanently for a few thousand dollars.

How We Fix Radon in Delta

For most Delta homes the fix is 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 roofline. The fan holds the soil under your home at slightly lower pressure than the living space, so radon follows the pipe outside instead of building up indoors. Older downtown homes over crawl spaces or dirt cellars usually call for sub-membrane depressurization instead, sealing the ground before drawing the gas out.

Because we're coming from Grand Junction, we plan Delta jobs carefully and fold the travel into one clear, firm quote — no surprises. Here's how our core services fit in:

• Radon testing — short- and long-term testing to establish your number, plus post-mitigation verification.
• Mitigation cost — straight answers on what a Delta system costs and what drives the price.
• Crawl space radon — sub-membrane systems and encapsulation for the crawl spaces and cellars common in older Delta homes.
• System repair & fan replacement — fixing failed fans and underperforming systems, any brand.

Every job is handled by licensed Colorado radon professionals — the state has required radon measurement and mitigation pros to be licensed since 2022 — permitted through the Delta County building department when required, and closed out with a verification test so you have documentation of the before-and-after numbers.