Valley Center is north of Wichita, in the Arkansas River valley near the Wichita–Valley Center Floodway, the flood-control channel locals call the "Big Ditch." Its older neighborhoods have houses with block or stone basements, and newer homes on the edges of town are more often poured-concrete basements or slabs. The type of basement makes a real difference to how radon gets in and how it's fixed.
Older block and stone basements
Concrete block walls are hollow inside, and those hollow cores can carry soil gas up through the wall and out through cracks, gaps and the open top course. Stone foundations have many joints. Both give radon more ways in than a modern poured wall. An installer may:
- seal the open top of block walls and visible gaps,
- seal the floor-wall joint and large cracks,
- in some homes, add suction to the block wall itself (block-wall depressurization) alongside sub-slab suction.
These steps take more time, which is one reason older basements can cost more to mitigate. Ask how the installer plans to deal with the walls, not just the floor.
River-area soils and water
Homes in river valleys often sit on sandy or loamy soils, which can let soil gas move easily. That can mean more radon entering, but it can also help a sub-slab system spread its suction under the floor. Higher groundwater is also common in valley locations, so many basements here have sump pumps. A sealed sump lid is a standard part of a system, and the installer should keep the pipe and fan away from places where water could collect.
Moisture and the system
A radon pipe carries damp soil gas, so condensation forms inside it, especially in winter. The pipe should slope so water drains back down under the slab, never toward the fan. If you hear gurgling or see water near the fan, call your installer.
Testing and next steps
Test in the basement if you use it. If you only use it for storage and laundry, test on the lowest level where you spend time, though many people test both. Our test results guide explains what to do with the number.
Request a quote with your ZIP, foundation type and test result, and a KDHE-certified professional who covers Valley Center will contact you. For prices, see the cost guide.
Common questions
Does a block basement always cost more to mitigate?
Not always, but it often takes extra sealing and sometimes wall suction. Ask for the plan in writing so you can compare quotes fairly.
I have a wet basement. Can I still get a radon system?
Usually, yes. The sump gets a sealed lid and the pump keeps working. Fix serious water problems first, because standing water under the slab can block suction.
Is flooding risk a reason to skip a radon test?
No. Flood and radon are separate issues. Every home should be tested, according to the EPA and KDHE.