Millions of shade balls helping protect California's precious water


Can 96 million balls improve water quality? Los Angeles is about to find out. On Monday, Mayor Eric Garcetti was at the Los Angeles Reservoir to mark the addition of 20,000 of the small balls to the lake.

But what exactly are those balls and how will they help?

They’re 96 million shade balls. Shade balls are used to protect water quality, prevent algae growth and slow evaporation from the city’s reservoirs. The L.A. Reservoir is the Department of Water and Power’s largest in-basin facility. Its surface is 175 acres, and it holds more than 3.3 billion gallons of water. The shade balls are expected to save 300 million gallons a year from evaporating from this particular reservoir.

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