Test your water regularly and as part of a purchase offer if a home has well water. Why ? There are all sorts of carcinogens in most ground water – not all is at high levels, but you need to stay informed. Recent cancer diagnosis of friends have brought this to my added attention. They eat clean, and live healthy otherwise.
You can use a state or local lab, but I’ve added a link to National Water Testing, a lab I recommend.
Call me first before testing for more details if you are considering buying or selling.