Well Water in Roanoke County: What to Test and Why

Groundwater in Roanoke County contains radon, manganese, and sulfate at levels that exceed EPA health standards. These contaminants are present at concentrations the EPA considers concerning enough to warrant attention.

The limestone and carbonate rock beneath this county naturally contains manganese and releases sulfate as water moves through it over time. Radon comes from the decay of uranium in the rock itself, a natural source that affects many wells across this region. These are not pollution problems but rather the result of the county's geology.

Groundwater in this county is hard, driven by calcium and magnesium dissolved from the carbonate rock below. Water flowing through limestone picks up these minerals easily, which is why hardness is a widespread feature of wells here. Most wells in the county show this same hard-water character because they all tap into the same limestone aquifer.

Wells in Roanoke County sometimes have elevated levels of manganese, radon, and sulfate compared to EPA health standards. Manganese at high levels can affect the nervous system, especially in children. Radon is a radioactive gas that increases lung cancer risk when breathed in over time. Sulfate at very high levels can cause digestive problems, particularly in infants and people with certain health conditions.

The hard water common in county wells can leave white scale buildup on faucets and inside pipes and appliances. This scale can shorten the lifespan of water heaters and dishwashers. You might notice a slight sulfur smell or taste in your water, though this varies from well to well. Hard water also makes soap less effective and can leave spots on dishes and glasses.

We recommend testing your well water to find out what is actually in it, since every well is different and yours could have higher or lower levels than the county average. A comprehensive metals and minerals panel costs between two hundred and four hundred dollars and will tell you exactly what you are dealing with. Testing is the only way to know if you need treatment, which might include a water softener for hardness or an activated carbon filter for radon and sulfate concerns.