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...Overview i exp water analysis for fecal contamination ii quantitative of ho feces purpose to learn perform the stage standard test waterborne diseases e coli hav polio shigella giardia salmonella indicator chlorine kills gram negative bacteria viruses and some pos protozoa normal flora chlorinated h o non pathogenic saprophytes tests performed presumptive prlb tube phenol red lactose broth with a durham reactions orange or without gas yellow fermenter potable drinkable more testing necessary possible microbes neg rod enterobacter sp clostridium...