They hustle people like crazy in Maine and the realtors are in on it. When we bought our house there we “had to” get a water test they found radium and uranium (IIRC) they weren’t really unsafe levels but convinced us they were and sold us on a $10,000 system. When we sold the house to move back here the buyers had a water test done and guess what, the water was still no good and the system had to get replaced. They sold the buyers on a $20,000 system to mitigate dissolved minerals that only exceeded “safe levels” by like .01% on 3 out of 6 tests we did over the course of like 38 months.