Water system inspections are sometimes conducted during a property transaction. Inspections are not required; however, if an inspection is conducted, it must be by a licensed well driller or pump installer. The DNR has a list of licensed well drillers and pump installers. Property owners are required to identify and properly fill and seal any unused or non-compliant wells on their property. If you are buying a home that contains an active well, you are encouraged to have a property transfer well inspection performed by a licensed contractor. At minimum, a test to ensure that the water is bacteriologically safe is also strongly recommended.