Keep your well water clean: why testing matters

Many people in La Crosse County rely on private wells for drinking water, but most don’t realize how easily contaminants can slip in. Unlike public water systems that get regular checks, private wells depend entirely on their owners to monitor quality. Experts say the safest approach is testing every year, even if the water looks and tastes fine. Rising water levels after heavy rains or floods can push bacteria and chemicals into wells. Once inside, these pollutants can’t be detected by sight or smell. Nitrates, for example, pose the biggest risk to infants and pregnant people by interfering with oxygen flow in the blood. Meanwhile, bacteria like E. coli can cause stomach pain, cramps, or worse. Shockingly, wells that tested clean years ago might not stay that way.If past tests showed problems, repeating them is crucial to confirm fixes worked. Boiling water or installing filters like reverse osmosis systems can help remove contaminants, but testing is the only way to know for sure. Free testing kits are available at local health offices and libraries, making it easy to stay safe without breaking the bank.