Well Water in Lexington city: What to Test and Why

Groundwater in Lexington city contains arsenic, chloride, and e. coli. Testing shows that contaminant levels here are low and do not exceed EPA health standards.

These contaminants come from natural sources in the rock and soil. Arsenic occurs naturally in the carbonate bedrock beneath the area. Chloride and bacteria can enter groundwater from road salt and septic systems, but the limestone aquifer filters water well enough to keep levels from becoming a concern for most wells.

Groundwater in Lexington city is very hard, driven by elevated calcium and magnesium from the limestone below. The carbonate rock dissolves slowly as water moves through it, releasing these minerals into the water supply. Very hard water is the norm across wells in this area.

The good news is that wells in Lexington city do not show contaminants exceeding EPA health standards at the county level. However, arsenic, chloride, and bacteria are concerns that show up in some wells here, so testing can tell you whether your water needs attention. Arsenic exposure over time can cause skin problems and increase cancer risk. Bacteria like E. coli can cause serious stomach illness, especially in children and older adults.

Wells in this county tend to be very hard, which means you might see white scale buildup on faucets and showerheads, or notice it inside pipes and appliances. Hard water can make soap less effective and leave spots on dishes. Over time, very hard water can shorten the lifespan of water heaters and dishwashers. You may also notice a slight salty taste from moderate sodium levels in the water.

We recommend testing your well to learn what is actually in your water, since every well is different and yours could have higher or lower levels than the county average. Testing is the only way to know for sure what needs treatment. A basic screening for bacteria and nitrate runs about fifty to one hundred dollars. For arsenic and hardness, water softeners or special filters can help reduce these concerns.