Wild swimmers to benefit from overhaul of bathing site rules / Swimmers stop using rivers over E. coli levels / China 'smart ladies' swimming club in hot water for only admitting educated women under 45 / U.S. swimmers falter again on Day 7 of Olympics, winning a single silver medal / U.S. swimmers are finding the podium -- just not the top floor / U.S. swimmers can't take gold, or Caeleb Dressel, for granted anymore / 'Stop, look, plan': Lifesaving Chair gives tips to swimmers over the Christmas period / Christmas swimmers enjoy milder conditions / Mapped: The record number of polluted spots swimmers are urged to avoid ahead of Christmas swims