Ridiculous Hand-wringing with an agenda
The wastewater treatment output in the area has been watering local golf courses there for years. That irrigation water then is leached back into the aquifers and current groundwater supply and pumped up for the usual processes to get drinking water. If there was an actual problem, we would have already seen it at the golf courses.
This is just a narrative designed to reduce traffic at this ski mountain in favor of a tribally-owned resort a few miles away. How come this isn't part of the story?