Well Water in Mathews County: What to Test and Why

Chloride, iron, manganese, and sulfate are present in this county's groundwater. Several of these contaminants exceed EPA health standards and warrant attention from well owners.

Saltwater from the ocean pushes inland through the coastal plain rock layers, bringing chloride into groundwater near the coast and in low-lying areas. Iron and manganese come naturally from the sand and clay sediments that make up the aquifer in this region. These minerals dissolve into water as it moves through the rock.

Groundwater in this county is very hard, driven by elevated calcium and magnesium, and also contains very high iron and elevated sodium. The sand and clay layers here release these minerals as water flows through them over time. These characteristics are widespread across most wells in the county.

Chloride, iron, manganese, and sulfate reach concerning levels in wells across Mathews County. Chloride at elevated levels can damage your kidneys and raise your blood pressure over time. Iron and manganese can harm your nervous system and brain function with long-term exposure. Sulfate in drinking water can cause digestive problems, especially for infants and people with certain health conditions.

The very hard water in this county creates real problems around your home. Iron leaves orange and brown stains on sinks, toilets, and laundry. Manganese causes dark or black stains. You'll see scale buildup on faucets and showerheads, and your water heater and dishwasher will wear out faster. The water may taste metallic or smell like rotten eggs.

Your well is unique and may have higher or lower levels than what is common here. We recommend getting a comprehensive metals and minerals panel to find out what is actually in your water, which typically costs two hundred to four hundred dollars. Testing is the only way to know what you're dealing with so proper treatment can be set up. Iron and manganese removal systems or water softeners can address many of these issues.