Well Water in McCulloch County: What to Test and Why

Well owners in McCulloch County should be aware of iron, manganese, nitrate, and fluoride in their groundwater. These contaminants are present at levels that exceed EPA health standards and warrant attention.

The rock beneath this county naturally contains iron and manganese minerals that dissolve into groundwater as water moves through the ground. Nitrate comes from human activity--mainly from fertilizer use and septic systems--that seeps down into the water supply. Fluoride also occurs naturally in the local rock and is released into water as it flows underground.

Groundwater in McCulloch County is notably high in iron and manganese, the metals that give the water its mineral character. These metals come from the iron-bearing rock that makes up the aquifer in this area, and as water sits underground it picks up these elements. Iron and manganese are found in many wells across the county, making these traits common here.

Wells in McCulloch County commonly have fluoride, iron, manganese, and nitrate at levels above EPA health standards. Fluoride in high amounts can damage tooth enamel, especially in children whose teeth are still developing. Iron and manganese in drinking water can cause problems with the nervous system and the brain with long-term exposure. Nitrate is especially dangerous for babies and can interfere with how their blood carries oxygen.

County well water with elevated iron and manganese creates staining on fixtures, laundry, and dishes that is hard to remove. These minerals can also make water taste metallic or leave an unpleasant smell. Iron buildup inside pipes and appliances can reduce water flow and shorten the life of water heaters and dishwashers over time.

We recommend testing your well 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 comprehensive panel that checks for metals and minerals costs between two hundred and four hundred dollars and is the only way to know what treatment your specific well needs. Treatments like filtration systems or water softeners can help remove these contaminants once you know what you are dealing with.