Well Water in Tioga County: What to Test and Why

Groundwater in Tioga County contains radon, iron, and PFOA that well owners need to be aware of. Several of these contaminants exceed EPA health standards, making this a situation that requires attention.

These contaminants come from different sources. Radon forms naturally from radioactive minerals in the bedrock. Iron dissolves into the water as it moves through the fractured rock layers underground. PFOA and chloride can enter groundwater from past industrial uses and road salt applied during winter months.

Groundwater in this county is moderately hard, driven by moderate levels of iron and dissolved minerals from the rock. As water moves slowly through the fractured bedrock, iron and minerals dissolve into the water. These characteristics show up across many wells in the county.

Chloride, iron, lead, and PFOA exceed EPA health standards in wells across Tioga County. Lead harms children's brain and nervous system development and affects kidney and blood pressure function in adults. Chloride at elevated levels can damage kidneys over time, especially for people on salt-restricted diets. Iron itself is not toxic, but elevated levels indicate the water is corrosive and may contain other harmful contaminants. PFOA is a chemical linked to high cholesterol, thyroid disease, and liver damage with long-term exposure. Radon is a radioactive gas that increases lung cancer risk when inhaled from water over many years.

The moderately hard water here causes orange or rust-colored staining on sinks, toilets, and laundry. Iron leaves deposits inside pipes that reduce water flow over time. You may notice a metallic taste or smell in your water. The moderate hardness can shorten the lifespan of water heaters, dishwashers, and washing machines by causing scale buildup inside them.

We recommend a comprehensive metals and radon panel to find out what is actually in your well, since every well is different and yours may have higher or lower levels than the county average. Testing is the only way to know what treatment your specific well water needs. A comprehensive panel typically costs $200-400. Treatment options like radon aeration systems, whole-house filters, or ion exchange can address these contaminants once you know your well's levels.