Los Angeles nearly 100 million plastic balls poured into the dam to prevent drought

This method saved $250 million more than another water saving method originally considered by the Hydropower Bureau. These black sunshades are about 10 cm in diameter and cover 71 hectares of water. They can separate water from dust, rain, birds and wild animals. They can also reduce the photosynthesis of algae, reduce the production of carcinogens and improve the quality of drinking water. It can also reduce the evaporation of 1.1 billion liters of water each year. This is equivalent to the amount of water in 454 Olympic swimming pools, enough to supply 8100 people a year of drinking water. Los Angeles Water and Electricity Bureau official Adams said that Los Angeles is the first city in the world to use sunscreen to protect drinking water. Jahiti said that in the historic drought of California, bold innovation must be made to achieve the biggest water saving goal.