Well Water in Crawford County: What to Test and Why

Iron, manganese, and arsenic are present in Crawford County's groundwater and well owners should be aware of them. Iron and manganese exceed EPA health standards and are a real concern at the levels detected here.

Iron and manganese come from the rock layers beneath the county. As groundwater moves slowly through cracks in the limestone and shale, it dissolves these metals naturally. Arsenic also comes from the same bedrock source, released as water sits in contact with these rocks over time.

Groundwater in Crawford County is very hard, driven by high calcium and magnesium from the limestone below, along with elevated iron and sulfate. The slow movement of water through these rock layers allows minerals to concentrate in the water. These characteristics show up in most wells across the county.

Wells in Crawford County commonly have iron and manganese at levels that exceed EPA health standards. Long-term exposure to elevated manganese can affect brain development and nervous system function. Iron at high levels does not pose a direct health concern, but when combined with other contaminants, it adds to overall water quality problems.

The water in this county is extremely hard, which causes heavy white, crusty buildup on faucets, showerheads, and inside pipes. Iron staining leaves orange-brown marks on sinks, toilets, and laundry. The extreme hardness can shorten the lifespan of water heaters and dishwashers. You may also notice a bitter or metallic taste from the mineral content.

We recommend testing your well with a comprehensive mineral and metals panel, since multiple contaminants are present in county wells. Every well is different, and your well may have higher or lower levels than what is common here. Testing is the only way to know what is actually in your water so it can be properly treated. A comprehensive panel typically costs $200-400, and treatment options include a water softener combined with an iron filter.