The bacterial danger from a massive sewer spill into the Catawba River nearly three weeks ago has passed, S.C. environmental officials said Tuesday, but they urged ongoing caution among the river’s recreational users anytime there’s heavy rain. The state Department of Health and Environmental Control posted no-swimming notices at the Catawba Nation landing and Landsford Canal on July 15, the day after a 21-inch pipe ruptured and dumped untreated sewage into Kings Branch in Charlotte for 11 hours.