I believe back in the 90's activists in some U.S. cities got their cities to stop adding fluoride to the supplies. Bad mineral exchanges immediately started to occur in the piping because of the accumulated minerals in the pipes which included a fluoride component started reacting with the water that no longer contained fluoride causing the water to become contaminated by minerals other than just fluoride. The water not only tasted bad, it was determined that it was not safe to drink.
It takes decades for the minerals in the piping to accumulate and it will take decades to slowly taper fluoride away if we want to avoid unintended consequences. I know the mineral content of water varies widely across supply sources so some cities may have no related problems and some could have severe problems.
Half a cent per gallon is 7,727 times MORE per gallon than a Los Angeles resident typically pays if they manage to stay in Tier 1 pricing all year. For facts concerning Los Angeles water rates see: https://www.ladwp.com/ladwp/fa... .
You are orders of magnitude off in understanding pricing in the water commodity market. Not that RO can't be done, just about every golf course and condo Cabo San Lucas BSC MX is watered via reverse osmosis. However, the valuations of each of those condos is in the millions per 1,000 sq ft so the investment makes sense for the developers. When the average home price in California picks up a couple more digits, RO will make perfect sense.
Charge a lot and have some associated token luminaries... That's how.
There is a reason the venture capitol people like this. The vast majority of University money goes to facilities, not lecturers. These people have eliminated facilities but are not charging 10%, they are charging 50%. That's pure profit baby!