Many U.S. beaches face Labor Day swim advisories due to unsafe fecal bacteria levels, posing health risks like illness, rashes, and nausea for swimmers.Thousands of Americans will head to beaches for one last summer splash this Labor Day weekend, but taking a dip might be out of the question: Many of the beaches will caution against swimming because of unsafe levels of fecal contamination. Beaches from Crystal River, Florida, to Ogunquit, Maine, have been under advisories warning about water quality this week because of elevated levels of bacteria associated with fecal waste. The advisories typically discourage beachgoers from going in...