Well Water in Union County: What to Test and Why

Your well water draws from the Valley and Ridge aquifers, which are layers of fractured rock and stone that sit beneath Union County. These rock layers were folded and tilted by ancient forces that pushed them together hundreds of millions of years ago. Water fills the cracks and spaces inside this broken bedrock, where your well pump pulls it out.

The Valley and Ridge rocks in this area have natural protective qualities that keep contamination out of the groundwater. The bedrock itself is solid enough to filter out harmful bacteria and other pollutants that might come from the surface. No contaminants have been detected in county wells, which shows that the local geology does a good job of keeping your water clean.

The water from these rock layers tends to be hard because it picks up minerals as it flows through the stone. Hardness means you may see white crusty buildup on faucets and fixtures, and soap may not lather as easily as you would like. This is a natural feature of the local groundwater and not a health concern.

Water testing data for Union County does not show contaminants exceeding EPA health standards. However, the county is flagged for closer attention based on regional patterns. Private wells in this area still need individual testing because conditions change from well to well.

Without mineral data for iron, sodium, or sulfate, there is no way to confirm or rule out staining, scaling, taste, or odor problems in your area. Long-term exposure to undetected contaminants like bacteria, nitrate, or naturally occurring metals can cause serious health problems, especially for babies and young children.

Get your well tested through a state-certified lab. A basic health screen covering bacteria and nitrate runs $50–100, and a full mineral and metals panel runs $200–400. Talk to a water treatment professional about whole-house filtration if your results show any contaminant above recommended levels.