
Cumberland County, Maine
Radon-in-Water Reduction in Gray, ME
Call (800) 696-9355 or request a visit. Monday to Friday, 8:00 AM to 5:00 PM.
Radon forms from uranium in rock and dissolves into groundwater, and a drilled well in Gray can carry it into the house. A radon-in-water system pulls it out of the supply before it can escape into the air you breathe.
Radon-in-Water Reduction for Gray homes
Gray sits at a busy crossroads north of Portland, with village streets, lakes and a lot of hill country around the edges. Hill country over bedrock means drilled wells rely on cracks in the rock, and their quality varies from lot to lot.
Radon, arsenic and uranium are fair questions for rock wells in southern Maine, and iron and manganese are common nuisances. Winter freeze-ups and spring melt put the most stress on pump houses and exposed lines, so that is when problems tend to surface.
What we see in Cumberland County wells
Inland Cumberland County is granite country, and drilled wells here regularly test high for radon. In Gray, we treat a result above the state guideline seriously, and we like to confirm it with a second sample before committing to equipment.
What to test first in Gray
- A repeat water sample, to confirm a high first result
- Gross alpha or other radiological screens if recommended
- Iron and manganese, which can foul carbon beds

How it works
How we handle radon-in-water reduction, step by step
- 1
Test the water
We collect a radon-in-water sample with the lab's closed method so the gas is not lost. The result tells us how much radon the well delivers and how far it must be reduced.
- 2
Decide the method
Aeration is the right answer for high results, carbon for moderate ones. We weigh space, power, venting, flow rate and long-term upkeep, then recommend one.
- 3
Install and vent
We mount the equipment, connect water, power and vent, and start the system. In a Gray basement, we keep the vent run short and the connections accessible.
- 4
Verify the result
You will know when to retest and what to look for. If you want an air test as well, we can explain where to get one in Cumberland County.

What shapes the job in Gray
Granular activated carbon beds capture radon as the water flows through. They need no power or venting, but they build up radioactivity over time and need careful placement and eventual disposal. Carbon is popular for moderate results.
When to think about radon in water
- A drilled bedrock well that has never been tested for radon
- A tight, well-sealed home in winter
- A water result above the state guideline
- Treatment that has never been verified
Not sure whether radon is a question for your Gray well? A single carefully collected sample answers it. Call, and we will explain how.
Radon-in-Water Reduction in Gray?
Start with a test. We will explain the results in plain language and only recommend what the numbers support.

