POPM 4040 Lecture 20: POPM 4040 Lecture : Waterborne illnesses
22 Dec 2018
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Document Summary
Public utilities workers did not report problems. Some definitions source water: untreated water (i. e. , raw water) used to produce drinking water , the water (e. g. , drinking water) delivered to the distribution system after, finished water treatment, if any . Surface water: all water on the surface (e. g. , lakes, rivers, reservoirs, ponds, and oceans) as distinguished from subsurface or ground water , groundwater under the direct influence of surface water, e. g. shallow, dug wells near lakes or pond. Microbiological hazards: almost any agent transmitted through fecal-oral route, most important (incidence, severity): enteric protozoal parasites, cryptosporidium, giardia bacterial enteropathogens, vibrio cholerae, salmonella typhi, e. coli, legionella, cyanobacteria. Reservoir hosts humans (most crypto) or other animals. Symptoms: diarrhea, abdominal cramps, gas, malaise, and weight loss; more severe in immunocompromised. Sewage / fecal pollution of raw water. Prevention: disinfection and filtration chlorine not active against. Cryptosporidium, but is against giardia uv active against both.
