Microbiological water quality of reservoirs.

Abstract

Based on watershed and reservoir characteristics, optimal indicators and the likelihood of certain pathogen types occurring can be predicted. Key environmental factors which must be considered include: spatial and temporal variation; survival rates of indicators and pathogens; survival in water versus sediments; and stormwater and feeder stream inputs. Microorganism enumeration factors of importance include: choice of proper indicators and proper enumeration methods; awareness of methodological pitfalls; stressed organism recovery; and sampling of appropriate sites at appropriate times with adequate replicates. Relating monitoring data on bacterial indicator levels to potential for waterborne disease outreaks requires decisions on acceptable risk and disease potential.-from Author