Is Folsom Lake water clean?
At Rattlesnake Bar Park in Folsom Lake, you will swim in one of the cleanest bodies of water of any triathlon anywhere in the world. Fed by the federally designated ‘wild and scenic’ North Fork of the American River, Folsom Lake water started its journey high in the Sierra as melted snow, steadily warmed by the sun beating down upon the deep, narrow Sierra river canyons. The entire length of the American River dumping into Folsom Lake runs through federal land (National Forest, BLM or State Park), with no human population residing anywhere near it to disturb the purity.
