Well Water Make sure you’re serving your family safe drinking water. While most private water wells in Wisconsin provide safe drinking water, some may become contaminated with bacteria and other pollutants that are not filtered out when the water soaks into the ground. DNR recommends you test your private well at least once a year for coliform bacteria contamination and any time you notice a change in how the water looks, tastes, or smells. Even if your water looks, tastes, and smells good, it can contain harmful bacteria and viruses.
Additional Information: Wisconsin DHS – Water Quality Wisconsin DNR – Private Wells Flooding: Private Wells When your well has been flooded, bacteria and other harmful organisms can get into your water. It will take time for the water to be safe to use again. You will need a safe source of water to use for several weeks while you fix your well. Safe water includes bottled water, tap water that you boiled for one minute, or water from a well that was not flooded.