When you buy a home, usually in some states. You get the water tested. To see if the PPM of minerals, fluoride lead to also make sure The pipes aren’t jacked. But don’t have to limit to buying home. Can have it tested regularly. The home in Ny I had, had a breakdown of the waters content. There was “acceptable” fluoride and lead… so I just started distilling drinking water at that point. Walmart has been purchasing land with massive water aquifers. And who knows what else the government has been doing to everyone. Spraying the air. Poisoning the water. I guess they wouldn’t think of peoples well water….