Swim Call

I'll check the water. You bring the towel.

Name the beaches, lakes, and rivers you swim, and Swim Call gives you a plain weekly read on whether the water's good to get into. It watches health-department advisories, harmful algal blooms, closures and reopenings, and the after-rain runoff spikes that foul the water before anything's posted. When your usual spots are off, it points you to the one that's actually good this weekend. Your friend who checked before everyone piled in the car. U.S. waters, in season.