Well Water in Clark County: What to Test and Why

Groundwater in Clark County contains radon, iron, and chloride at levels that exceed EPA health standards. These contaminant levels are concerning and require attention.

The bedrock beneath Clark County naturally releases these contaminants into groundwater. Radon comes from radioactive materials in the rock. Iron dissolves out as water moves slowly through cracks and fractures in the stone. Chloride enters from both natural mineral deposits and road salt applied to local roads.

Groundwater in this county is very hard, driven by elevated calcium and magnesium from the limestone and dolomite bedrock. These minerals dissolve naturally as water sits in contact with the rock over time. Very hard water and elevated iron are widespread across wells in Clark County.

Wells in Clark County commonly contain arsenic, chloride, iron, and radon at levels that exceed EPA health standards. Arsenic is a poison that builds up in your body over time and can damage your kidneys and nervous system. Radon is a radioactive gas that increases lung cancer risk with long-term exposure. Chloride and iron at elevated levels also pose health concerns.

The water in this county is extremely hard, which means you will see thick white crusty buildup on faucets, showerheads, and inside pipes. Iron stains sinks, toilets, and laundry orange-brown. Very hard water like this can shorten the lifespan of water heaters and dishwashers. You may notice a metallic taste in your water.

We recommend testing your well with a comprehensive metals and minerals panel, since multiple contaminants exceed health standards. Every well is different, and your water may have higher or lower levels than what is common in the county. Testing is the only way to know what is actually in your well so it can be properly treated. A comprehensive panel typically costs $200-400, and treatment options include radon aeration systems combined with arsenic removal filters.