Well Water in Austin County: What to Test and Why

Groundwater in Austin County contains iron, arsenic, and manganese at levels that exceed EPA health standards. These contaminants are present at concentrations serious enough that well owners should test their water and consider treatment options.

The coastal lowlands geology here naturally releases iron and manganese into groundwater as water moves through layers of sand, clay, and silt. Arsenic comes from similar natural sources in these rock layers, and nitrate and chloride enter from agricultural land use and other human activities on the surface. These contaminants are common in this region because of how the rock breaks down underground and how water moves through it.

Groundwater in this county is very hard, driven by elevated calcium and magnesium that dissolve from the rocks below. The coastal lowlands aquifer system in this area contains minerals that easily dissolve into water, making hardness a widespread characteristic across wells throughout the county.

Wells in Austin County commonly have arsenic, chloride, iron, manganese, and nitrate at levels above EPA health standards. Arsenic exposure over time can increase cancer risk and cause skin problems. Nitrate is especially dangerous for babies and can interfere with how blood carries oxygen. Manganese at high levels can affect the brain and nervous system development in children. Chloride itself is not a direct health threat at these levels, but high chloride often signals other water quality problems.

County well water is very hard, which creates staining on fixtures and dishes from the iron and manganese. You may notice rust-colored or brown stains in sinks, tubs, and laundry. The buildup of minerals can form scale inside pipes and appliances. This very hard water can shorten the life of water heaters, dishwashers, and washing machines. Some people also notice a metallic taste or odor in their water.

We recommend testing your specific well water with a comprehensive metals and minerals panel, which typically costs $200 to $400. Your well may have much higher or much lower levels than what is common in the county--testing is the only way to know what is actually in your water so you can treat it properly. A professional can help you choose between options like reverse osmosis, ion exchange, or activated carbon filters based on your results.