Well Water in Addison County: What to Test and Why

Groundwater in Addison County contains arsenic, chloride, fluoride, iron, lead, manganese, nitrate, and uranium at levels exceeding EPA health standards. These contaminants appear in amounts serious enough that well owners should test their water and understand their individual results.

The limestone bedrock beneath this county naturally contains arsenic, uranium, and other metals that dissolve into groundwater as water flows through the rock. Road salt applied in winter enters groundwater through soil and cracks, raising chloride levels. Nitrate comes from fertilizers and septic systems in agricultural and residential areas. Lead and fluoride can enter from natural sources in the rock and from old plumbing or historical industrial activity.

Groundwater in this county is very hard, driven by elevated calcium and magnesium leached from the limestone bedrock. As water moves slowly through carbonate rock, it dissolves these minerals and becomes enriched in hardness. These characteristics are widespread across wells throughout the county.

Wells in Addison County commonly contain arsenic, chloride, fluoride, lead, uranium, and nitrate at levels above EPA health standards. Arsenic can damage the kidneys and nervous system over time. Lead harms children's brain development and learning. Uranium and nitrate both affect the kidneys. Chloride and fluoride at high levels can damage bones and teeth.

Addison County has very hard water, which leaves white scale buildup on faucets, showerheads, and inside pipes. Hard water makes soap less effective and can leave spots on dishes and skin. It shortens the lifespan of water heaters, dishwashers, and washing machines. You may notice a chalky taste or feel a slick residue on your skin after showering.

We recommend having your well tested with a comprehensive metals and minerals panel to find out exactly what is in your water. Your well could have higher or lower levels than what is common countywide. Testing is the only way to know what needs treatment. A full panel costs between two hundred and four hundred dollars. Treatment options like reverse osmosis systems or activated carbon filters can remove many of these contaminants.