E. coli bacterial concentrations did not approach hazardous levels in the most recent water quality assessments performed by the Bandera County River Authority & Groundwater District, but that should not suggest that the Medina and Sabinal rivers are safe for swimmers to get in again, the authority’s general manager said last week. BCRAGD General Manager David Mauk said despite the E. coli readings from water quality tests on Aug. 22, hot, dry conditions still make swimming and other recreational contact with the rivers hazardous. Searing heat, which has pushed temperatures in the rivers into the high 80s, and little or no rainfall ...