When Senja Bownes went surfing at Pease Bay on the beautiful coast of east Lothian four years ago, she didn't expect to die. But she nearly did -- from an E.coli infection she got from sewage in the water. Feverish, drenched in sweat, and repeatedly sick, the 33-year-old teacher spent two weeks at the City Hospital in Edinburgh on an anti biotic drip. 'I've never been so ill', she said. 'I thought I was just going to fade away.'