E. coli bacterial contamination reached hazardously high levels in the Medina River and English Crossing in tests conducted by the Bandera County River Authority & Groundwater District on July 1 only to fall back to more reasonable levels in testing six days later. Water sampling results Water sampling results reported by the river authority last week showed that E. coli concentrations at English Crossing hit 980 MPN – or most probable number – per 100 milliliters of water on July 1 and then fell to 178 MPN in a retest on July 7. The 980 MPN reading is more than twice the ...