Where can we find more drinking water for our growing cities? Well it may not sound very appealing, but a growing number of municipalities are working to purify wastewater so that residents can actually drink it! According to the Wall Street Journal, Los Angeles has announced a plan to recycle 4.9 billion gallons of treated wastewater by 2019, while Dade County, Florida is planning to pump 23 million gallons of purified wastewater per day into the ground to later be used for drinking. Using microfilters to remove solids and bacteria, and then reverse osmosis and ultraviolet light to purify the recycled water, it is cleaner than federal standards require. Sounds like sewers to spigots may just help wash away concerns over limited water.