As the sun rose on Lake Arrowhead late last week, four guys on a motorboat armed with 5,739 pounds of white powder set out to tackle one of Texas' most vexing water problems — evaporation from surface reservoirs. Last year, evaporation cost the state 2 trillion gallons of water, and it has been eliminating as much as 40 million gallons of water a day from drought-stricken Wichita Falls' supply this summer.
The four men, who work for a company called Flexible Solutions, were applying WaterSavr to Lake Arrowhead. The company claims that its product will save the city hundreds of millions of gallons of water by preventing evaporation. At a cost of $400,000 for the product and labor, the city is hoping the experiment, the first of its size in the nation, will work. And the rest of parched Texas is watching. But there are plenty of skeptics.