 In places that don't have an A.C., it's a lot tougher for them to cool down, even when it gets dark. It's also, according to hospital services and the health care industry, it's also not uncommon to see more E.R. visits during heat waves as well. And in parts of eastern Washington, water rationing has begun. At the moment, the restrictions only apply to residential irrigation. But the region's dominant industry in eastern Washington? Agriculture.