Well Water in Cambria County: What to Test and Why

Groundwater in Cambria County contains iron, manganese, radon, chloride, and sulfate at levels that exceed EPA health standards. These contaminant levels are concerning and warrant attention from well owners.

These contaminants come from the rock layers beneath the county. The Mississippian-age shale and sandstone naturally contain iron and manganese that dissolve into groundwater as water moves slowly through the rock. Radon forms when uranium trapped in these same rocks breaks down over time. Sulfate and chloride accumulate as groundwater sits in contact with minerals in the rock layers.

Groundwater in this county is moderately hard, driven by elevated iron and manganese from the rock below. These minerals dissolve naturally as water moves through cracks and spaces in the shale and sandstone. Iron and manganese show up in wells across the county, making these characteristics widespread.

Wells in Cambria County commonly contain chloride, iron, manganese, radon, and sulfate at levels that exceed EPA health standards. Radon is a radioactive gas that increases lung cancer risk over time. Manganese can affect brain development and nervous system function in children and adults. Chloride and sulfate themselves are not health hazards at the levels found here, but they indicate the water has contacted minerals deep underground. Iron and sulfate do not pose direct health risks at typical county levels.

Hard water is very common in Cambria County wells, and combined with elevated iron, this creates noticeable quality-of-life problems. You may see orange-brown stains on sinks, toilets, and laundry. White crusty scale builds up on pipes and fixtures. The sulfate can give water a bitter or metallic taste. Very hard water also shortens the lifespan of water heaters and dishwashers.

We recommend testing your well because every well is different and yours 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 you can treat it properly. Since multiple contaminants exceed health standards, a comprehensive metals and radon panel is recommended rather than a basic screen. Treatment options like aeration systems combined with water softeners can address several of these concerns at once.