How do you make wastewater drinkable? It starts at the sewage treatment plant.
Ongoing droughts are straining the supply of clean drinking water. One solution might lie in an unexpected source: wastewater. Through a method of purification called reverse osmosis, Orange Country is making millions of gallons of dirty water drinkable again.
From Toilet To Tap: The Los Angeles Plan To Recycle Wastewater | All In | MSNBC
Treatment process turns wastewater into drinking water