Well Water in Green County: What to Test and Why

Groundwater in Green County contains arsenic, chloride, and e. coli as the top contaminants detected. Contaminant levels here are low and do not exceed EPA health standards.

Arsenic and chloride occur naturally in the deep rock layers that supply this county's wells. E. coli can enter groundwater when surface water seeps down through soil and rock, usually near wells that are close to animal areas or septic systems. The local geology and land use here generally keep contamination at low levels.

Groundwater in Green County is very hard, driven by elevated calcium and magnesium from the limestone bedrock below. As water flows slowly through limestone, it dissolves these minerals and carries them into the aquifer. Very hard water is the norm across wells in this county.

Good news--wells in Green County show no contaminants exceeding EPA health standards at levels of concern for the county overall. However, some wells in the area do contain arsenic and chloride, and bacteria like E. coli have been detected in certain wells. These contaminants can pose health risks if present in high amounts, so knowing whether they exist in your specific well matters.

The main quality-of-life issue in Green County is very hard water. Hard water leaves white scale buildup on faucets, shower heads, and inside pipes. It can shorten the lifespan of water heaters and dishwashers. You may also notice that soap doesn't lather well and that dishes come out spotted.

We recommend testing your well to find out exactly what you have. Every well is different, and your well may have higher or lower levels than what is common in the county. Testing is the only way to know what needs treatment. A basic screening for bacteria and nitrate runs $50-100, while a comprehensive metals and minerals panel costs $200-400. If results show hardness, a water softener can help.