A California woman, for one, who wants to ease the drought, put disabled vets to work, and make some money
Sourced through Scoop.it from: www.bloomberg.com
>” […] The shade balls of Los Angeles are 4 inches in diameter, hollow, polyethylene orbs […] The Los Angeles Department of Water and Power has now dumped 96 million balls into local reservoirs to reduce evaporation and block sunlight from encouraging algae growth and toxic chemical reactions. The balls are coated with a chemical that blocks ultraviolet light and helps the spheres last as long as 25 years. Las Virgenes, north of L.A., now uses shade balls, too. […]
The U.S. Environmental Protection Agency has encouraged the nation’s water managers in recent years to find ways to cover or contain their resources, to prevent sunlight from reacting with chlorine and possibly creating carcinogens, says Ed Osann, a senior policy analyst at the Natural Resources Defense Council. The shade balls shouldn’t pose a pollution problem in themselves, he says, since “everything that comes in contact with drinking water has to be a certified material.” Chase says the balls are designed not to degrade.
The shade balls are a novel way to protect drinking water, and Californians’ latest attempt to adjust to their four-year drought. […]”<