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11 Cards in this Set

  • Front
  • Back

playas

used as recreation sites and habitat for migrating waterfowl.

what is the playa problem?

microbial contamination by coliforms and enteric bacteria from human and animal waste

what are coliforms?

gram negative, non-spore forming, rod that ferments lactose with gas formation

water borne pathogens

bacteria, virus, protozoa, helmiths, algae

bacteria enteritis, diarrhea, and dysentery

e.coli, slamonella, shigella

enteric fever

typhoid salmonella typhi

paralysis

botulism-clostridium botulinum

water microbiology viruses

enteritis, diarrhea, and dysentery (rotavirus, norwalk) flu like liver damage virus (hep A, hep E) paralysis (polio-poliovirus)

protozoa

giardia-diarrhea, cryptosporidia, ameoeba-amoebiasis (entamoeba histolytica)

helmith

round worm- ascariasis


tape worm- anemia, diarrhea


hook worm

how to determine microbes in the water?

number of pathogens in water supply may be small


indicator organisms are used to determine if fecal contamination has occurred


most common indicator organism--> coliforms