rapidly measured indicators of recreational water quality are predictive of swimming-associated gastrointestinal illness. | standard methods to measure recreational water quality require at least 24 hr to obtain results, making it impossible to assess the quality of water within a single day. methods to measure recreational water quality in <or=2 hr have been developed. application of rapid methods could give considerably more accurate and timely assessments of recreational water quality. we conducted a prospective study of beachgoers at two great lakes beaches to examine the association between recreational water qu ... | 2006 | 16393653 |