Well Water in Jefferson County: What to Test and Why

Groundwater in Jefferson County contains radon, manganese, and iron as the top contaminants detected in wells. Several contaminants exceed EPA health standards, including chloride, iron, manganese, radon, and sulfate, making these levels a real concern for well owners.

These contaminants come straight from the rock layers beneath the county. The Pennsylvanian shale and coal-bearing rock naturally holds these metals and radioactive elements. When groundwater sits in contact with these rocks over time, iron and manganese dissolve into the water, and radon gas seeps from trace amounts of radioactive minerals in the stone.

Groundwater in this county is very hard, driven by elevated calcium and magnesium, along with notably high sulfate and moderate iron and sodium. The slow movement of water through tight shale fractures allows minerals to concentrate in solution. These characteristics show up across wells throughout the county, though individual wells vary.

Wells in Jefferson County commonly exceed EPA health standards for chloride, iron, manganese, radon, and sulfate. Radon is a radioactive gas that enters water from rock and can increase lung cancer risk when released into your home's air. Chloride and sulfate at elevated levels can cause digestive issues. Manganese can affect your nervous system and learning abilities. Iron itself is not classified as a health threat at these levels but indicates other contaminants may be present.

Wells in this county produce water that is extremely hard, which leaves white crusty scale buildup on pipes, faucets, and inside water heaters and dishwashers. Iron stains sinks, toilets, and laundry orange or brown. The high sulfate and sodium levels give the water a bitter or salty taste. This extreme hardness also shortens the lifespan of water heaters and other appliances.

We recommend testing your well with a comprehensive metals and minerals panel, since your water shows multiple contaminants above recommended levels. Every well is different, and your water may have higher or lower levels than what is common in the county. Testing is the only way to know what is actually in your well so it can be properly treated. A comprehensive panel typically costs $200-400, and treatment options include water softeners paired with aeration systems and iron removal filters.