About 400,000 black plastic ball covered lake, 1 somewhat strange initiative of the city of Los Angeles that is using plastic balls covered one large surface of Lake Ivanhoe are more people place it felt "excitement".

Local people gasped when between arid desert drought throughout the year naturally large lake appears as miracle

Ivanhoe Reservoir lake formed 102 years ago. Until now, the lake is the water supply for 600,000 people in the center and south of the city of Los Angeles.

In 2007, the Department for Protection of water and water analysis detected high levels of quality 1 bromate. It was 1 carcinogen, when bromide and chlorine formed react under the catalysis of sunlight.

Soon after being discovered at bromate, the municipal government has immediately sought to prevent toxic substances formation date is 1 more. And have carried out building new tank capable 1 isolate water with sunlight.

But, because the time to build a long underground lake, water Protection Agency has carried out a temporary solution to prevent sunlight.

Initially, they wanted to use oil cloth to cover his face, but the area is too large pool plus expensive fabric prices, had to think of other ways. And government initiatives plastic ball is used.

Who launched an initiative is overshadowed biologist Brian White. Brian White said that kind of ball is the black balls are usually placed at the airport to prevent bird

With its low price, plus high feasibility (of glossy black potentially skewing the highest UV). Since May 6/2008, there are about 400,000 balls began Ivanhoe covered lake. The balls will protect water sources until the groundwater reservoir in operation.