Well Water in Franklin County: What to Test and Why

Groundwater in Franklin County contains manganese, iron, and arsenic that well owners should be aware of. Iron and manganese reach levels that exceed EPA health standards, while arsenic is present but at lower concern.

The rock beneath this county naturally contains iron and manganese minerals that dissolve into groundwater as water moves slowly through the ground. Arsenic also occurs naturally in the bedrock here. These are not pollution problems but come from the geology of the Valley and Ridge mountains in this area.

Franklin County's groundwater is moderately hard and notably high in iron. The iron comes from minerals in the rock layers that make up the local aquifers, and these minerals dissolve readily as water passes through. Iron levels at this height are common across wells throughout the county.

Wells in Franklin County commonly contain iron and manganese at levels that exceed EPA health standards. Manganese can affect how the brain and nervous system work, especially in young children and infants. Iron at high levels in drinking water is also a health concern. Your individual well may have higher or lower amounts than what is common across the county.

Hard water is common in county wells, and the elevated iron creates visible staining on fixtures, laundry, and skin. You may notice a reddish or brownish tint to the water or a metallic taste. Iron buildup can clog pipes and shorten the lifespan of appliances like water heaters and dishwashers over time.

Every well is different, and your water may contain higher or lower levels than the county average. Testing is the only way to know what is actually in your well so you can treat it properly. We recommend a comprehensive metals and minerals panel to check for iron, manganese, and other contaminants, which typically costs between $200 and $400. Iron and manganese can be removed through filtration or aeration systems.