Reverse osmosis is getting to be a viable water purification method even if you are not an energy rich middle eastern oil producer. Back in the 90s I lived in

Reverse osmosis is getting to be a viable water purification method even if you are not an energy rich middle eastern oil producer. Back in the 90s I lived in a community of about 160 homes in the mountains above Woodside CA. We had our own mutual water district. We had good water quality, but were pestered by the county to upgrade our treatment facility because our reservoir was subject to contamination. There was a gas station with leaking tanks about 50 feet from the edge. We finally installed a reverse osmosis filtration system, not to create fresh water from salty, but to remove any possible contaminants. The town where I now live is planning to install a desalinization plant because the main water source was contaminated by MTBE contamination from the Chevron station. It is being held up by an over zealous coastal commission.