Well Water in Bennington County: What to Test and Why

Groundwater in Bennington County contains radon, iron, manganese, arsenic, chloride, lead, and uranium at levels that exceed EPA health standards. These contaminants appear in amounts that warrant attention and testing of individual wells.

The bedrock here is carbonate rock limestone mixed with other stone types. As water moves down through cracks and spaces in this rock, it picks up radon from natural radioactive decay happening in the stone itself. Arsenic, uranium, and metals like iron, manganese, and lead occur naturally in the rock and soil. Chloride sometimes enters from road salt and other sources on the land surface. Wells drilled into deeper limestone layers tend to draw more of these naturally occurring contaminants.

Groundwater in this county is very hard, driven by elevated calcium and magnesium from the carbonate rock below. The limestone dissolves slowly as water passes through it, releasing these minerals into the water. Very hard water is common across wells throughout Bennington County.

Wells in Bennington County have been found to contain arsenic, lead, uranium, and radon at levels that exceed EPA health standards. Arsenic and uranium are naturally occurring elements in the groundwater that can cause serious health problems over time, including increased cancer risk and damage to organs. Lead entering wells through old pipes or natural deposits can harm the brain and nervous system, especially in children. Radon is a radioactive gas that seeps from rock and soil into groundwater, and breathing it over many years increases lung cancer risk.

Bennington County has very hard water, which causes white scale buildup on faucets, fixtures, and inside pipes. This scale reduces water flow and makes it harder to get soap to lather. The extreme hardness can shorten the lifespan of water heaters, dishwashers, and other appliances that heat or use water. You may also notice a chalky or mineral taste in the water.

We recommend having your well water tested with a comprehensive metals and radon panel to see what is actually in your water. Every well is different, and your water may have higher or lower levels of these contaminants than what is common across the county. Testing is the only way to know what treatment your well needs. A comprehensive panel typically costs between two hundred and four hundred dollars, and treatment options include radon aeration systems and point-of-use filters for metals removal.