Well Water in Hamilton County: What to Test and Why

Groundwater in Hamilton County contains radon, uranium, iron, manganese, and chloride. Radon and uranium exceed EPA health standards, while iron and manganese are present at moderate levels that also exceed standards.

These contaminants come from the rock itself. Radon and uranium occur naturally in the bedrock and seep into groundwater over time. Iron and manganese dissolve from minerals in the rock as water moves through it. Chloride can enter from road salt and other sources on the land surface.

Groundwater in this county is soft, with moderate iron being the main mineral characteristic. Iron concentrates here because it is naturally present in the bedrock and dissolves as groundwater passes through. Iron at these levels shows up in many wells across the county.

Wells in Hamilton County commonly exceed EPA health standards for radon, uranium, and chloride. Radon is a radioactive gas that enters groundwater from natural minerals in rock and can increase cancer risk when inhaled over time. Uranium builds up in bones and kidneys and can damage those organs. Chloride at elevated levels can affect people with heart disease or high blood pressure.

Since the water in this county is soft, you won't see heavy scale buildup or shortened appliance lifespans. However, iron in county wells can leave rust-colored or brown staining on fixtures and laundry. Some people notice a metallic taste in the water from iron and manganese.

We recommend testing your well water with a comprehensive metals and radon panel, since multiple analytes exceed health standards in this county. Every well is different, and your well may have higher or lower levels than what is common here. Testing is the only way to know what is actually in your water so it can be properly treated. A comprehensive panel typically runs $200 to $400. Treatment options like reverse osmosis systems or radon mitigation can address these concerns once you have your results.