Well Water in Genesee County: What to Test and Why

Groundwater in Genesee County contains iron, arsenic, chloride, manganese, and sulfate. These contaminants exceed EPA health standards, making this a serious concern that warrants testing.

These contaminants come from the Marshall aquifer, a sandstone formation that sits beneath the county. As groundwater moves slowly through this rock, iron and arsenic dissolve naturally from the stone. Chloride accumulates partly from road salt applied to highways and partly from ancient minerals locked in the rock itself.

Groundwater in this county is very hard, driven primarily by elevated calcium and magnesium from the bedrock below. Iron concentration adds to the water's mineral load and is common across wells in this area. These mineral characteristics are typical of what wells draw from the Marshall aquifer throughout Genesee County.

Wells in Genesee County commonly exceed EPA health standards for arsenic, chloride, iron, and manganese. Arsenic is a poison that builds up in your body over time and increases the risk of cancer and organ damage. Chloride at elevated levels can harm heart and kidney function, especially for people on restricted sodium diets. Iron and manganese can affect children's brain development and overall health when consumed over time.

Wells in this county produce water with extremely high hardness and mineral content. You will likely notice orange or reddish-brown staining on sinks, toilets, and laundry from the high iron levels. The water may taste metallic or bitter, and you could smell rotten-egg odors from sulfate. Very hard water like this builds scale inside pipes and water heaters, shortening their lifespan and forcing early replacement.

We recommend testing your well water as soon as possible, since every well is different and yours 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 water so you can treat it properly. A comprehensive metals and minerals panel typically costs $200-400 and will identify which contaminants need attention. Treatment options like reverse osmosis systems or specialized arsenic removal paired with water softening can address multiple problems at once.