Well Water in Wilson County: What to Test and Why

Groundwater in Wilson County contains iron, manganese, chloride, nitrate, and sulfate at levels that exceed federal health standards. These contaminant levels are high enough that well owners should test their water and consider treatment.

The Texas coastal uplands aquifer system in this county contains rock and sediment naturally rich in iron and manganese. Chloride and sulfate dissolve from these rock layers as groundwater moves slowly underground. Nitrate comes from fertilizer and septic systems in the area. Together, these sources create the contamination pattern you see across the county.

Groundwater in Wilson County is moderately hard and notably high in iron, the main minerals shaping your water's character. Iron concentrates here because it naturally occurs in the rocks that hold your groundwater. These characteristics are widespread across wells throughout the county, so most owners will encounter similar water chemistry.

Wells in Wilson County show several contaminants exceeding EPA health standards. Chloride, iron, manganese, nitrate, and sulfate have been found at concerning levels in county water supplies. Drinking water with high nitrate puts infants and pregnant women at risk for serious health problems. Manganese can affect how your nervous system works, especially in children. High chloride and sulfate in drinking water can cause digestive issues and other health effects over time.

Your well water in this county may have iron and manganese that leave orange or brown stains on fixtures, laundry, and dishes. Hard water is common here and can leave scale buildup in pipes and reduce how long water heaters and dishwashers last. You might notice a metallic taste or smell in your water from these minerals.

We recommend testing your well with a comprehensive panel to find out exactly what is in your water, since every well is different and yours could have higher or lower levels than the county average. A full metals and minerals panel typically costs between two hundred and four hundred dollars. Testing is the only way to know what treatment your specific well needs, whether that is a water softener, iron filter, or other system.