One water well contractor's view on water treatment.
I went to a presentation a while back where a water treatment dealer assembled a group of concerned but naïve citizens to warn them of the dangers of radon. He had government studies, medical studies, scientific studies - all well organized to alert the folks to the very real dangers of radon gas. Then he went into all the possible treatment methods. After an hour and a half or so, he asked if anyone had any questions. I raised my hand and asked him if radon had ever been detected in any of the local water supplies. “No, but it's dangerous,” he said and then indicated that all this high-dollar treatment equipment will prevent any problems. I think some of the folks bought equipment anyway.