This is obviously oversimplified...
The reality is, many people in the country and world already do this. It's called waste water recycling. The other option California is considering right now is desalinating the ocean water (taking the salt out). If you think about it, though, it's basically drinking fish pee, using the same oversimplification.
Maybe a better title for the article would be:
"Why California Could Soon Be Drinking Pee of Some Sort."
... or maybe just
"Californians Drink Pee."
... or even
"Look at This Can of Water; It Has Nothing to do With This Article."