Bather, beware: British beaches and rivers have a sewage problem.

HENLEY-ON-THAMES, England — Endurance swimmer Joan Fennelly is undaunted by frigid water and long distances, swimming year-round in the wild. But she takes extra precautions in her own backyard. The River Thames is one of Britain’s many waterways contaminated with sewage and agricultural pollution. “If it looks right, if it smells right, I’ll go in,” … Read more