While the display may seem artistic, 400000 black balls are poured into the LA reservoir as a means to protect the water from turning into a health hazard.
According to Worlds Amazing Information, 400000 black colored balls were poured into the water by the Department of Water and Power workers in Los Angeles in order to shade the reservoir as a means to protect the quality of L.A. drinking water and preventing it from becoming a health hazard.
According to the article, the water needs to be protected and in the shade because of its composition of bromate and chlorine, which if exposed to large amounts of sunlight, could cause a chemical reaction and in high levels can cause cancer. In the previous year, abnormally high levels of bromide were detected, however, specialists stated that the danger was minimal as people had to drink the water over their lifetime for it to be cancerous. Even then, specialists claimed the chances of contracting cancer were minimal as a direct cause of drinking the water.
Once the toxic chemicals were detected and understood, officials began to search for a method to shade the Ivanhoe and Elysian Reservoirs, but found it difficult as all suggested options would need an immense amount of time and funding. That is when the local government followed the advice of a DWP biologist who came up with the idea to use the black plastic balls.
400000 Black Balls are Poured into the LA Reservoir.