Well Water in Crawford County: What to Test and Why

Crawford County's groundwater comes from the Marshall aquifer, which is a layer of sandstone and related rocks sitting deep underground. This rock formation holds water in its tiny spaces between sand grains. The water moves slowly through these rocks as it travels from where rain soaks in.

Iron, arsenic, and chloride appear in this area's water because they come straight from the rock itself. Iron is naturally present in the sandstone. Arsenic is also released as groundwater passes through certain rock layers over many years. Chloride shows up partly from road salt used in winter and partly from the rock.

This water is very hard and contains high amounts of minerals. Iron at these levels stains sinks and toilets reddish-brown. The high sodium and sulfate give the water a salty or bitter taste and can build up inside pipes and water heaters over time.

Iron exceeds EPA health standards in Crawford County well water. This is the primary concern for your household. Arsenic and chloride are also present in the area's groundwater but at lower levels of concern. Testing your well is the best way to know what you're actually dealing with.

Iron at these high levels will stain your sinks, toilets, and laundry. Your water may taste metallic or look reddish-brown. Very high sodium and sulfate also affect water quality and can cause a bitter taste. Over time, these minerals build up inside pipes and water heaters.

Get your well tested by a state-certified lab. A basic health screen costs $50–100, while a full mineral and metals panel runs $200–400. Ask the lab to check iron, arsenic, chloride, sodium, and sulfate. An iron filter system paired with a water softener can handle these problems once you know your levels.