Well Water in Blair County: What to Test and Why

Groundwater in Blair County contains radon, nitrate, and manganese as the top contaminants well owners should know about. Several contaminants exceed EPA health standards, including radon, fluoride, arsenic, chloride, iron, manganese, nitrate, PFOA, PFOS, and sulfate, making water testing and treatment important for this area.

The Valley and Ridge rock formations beneath Blair County naturally release these contaminants as groundwater moves slowly through cracks and fractures in the bedrock. Radon seeps from uranium that breaks down in the rock layers. Iron and manganese dissolve out of the shale and mixed rock as water sits in contact with these minerals. Nitrate can enter from agricultural activity or old septic systems on the land above. These contaminants accumulate because groundwater moves slowly through fractured bedrock, giving minerals time to dissolve into the water.

Groundwater in this county is very hard, driven by elevated calcium and magnesium from the limestone and carbonate-rich layers in the Valley and Ridge formation. Iron at moderate levels and the overall hardness create the main mineral character of the water in this area. These characteristics show up across wells throughout Blair County, though individual well results vary depending on depth and location within the county.

Wells in Blair County commonly contain radon, fluoride, arsenic, chloride, iron, manganese, nitrate, PFOA, PFOS, and sulfate at levels that exceed EPA health standards. Radon is a radioactive gas that increases lung cancer risk with long-term exposure. Arsenic, PFOA, and PFOS can harm organs and development over time. Nitrate is especially dangerous for infants and can cause serious blood problems. Manganese affects brain development, and fluoride at high levels can damage teeth and bones.

Hard water in this county leaves white crusty scale on pipes, fixtures, and inside appliances like water heaters and dishwashers, shortening their lifespan. Iron stains sinks, toilets, and laundry orange-brown and creates an unpleasant metallic taste. The combination of extreme hardness and elevated iron makes daily water use frustrating and costly.

We recommend testing your well water through a certified lab because every well is different and your water may have higher or lower levels than what is common here. Since multiple contaminants exceed health standards, a comprehensive metals and radon panel is recommended to understand what you are dealing with. Testing is the only way to know what is actually in your well so proper treatment can be chosen. A comprehensive panel typically costs $200 to $400; treatment options like aeration systems combined with specialized filters can address multiple problems.