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Essay On Drinking Water Disease

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Ten pathogens of interest that are commonly causative agent in drinking water disease were identified to be included in the cost-benefit analysis: Campylobacter sp., Salmonella sp., E. coli O157:H7, Adenovirus, Rotavirus, Hepatitis A, Cryptosporidium sp., Giardia sp., Norovirus, and Legionella. Infection rates, incident cases, acute gastrointestinal (AGI) cost per case, sequelae rates and cost per case, and mortality rates and cost per case were identified for each of the ten identified pathogens. When data was unavailable, an estimate was made based on relevant data identified in the literature. Those values were then used to calculate the annual costs associated with AGI illness cases and the number of cases and total annual costs …show more content…

As such, this approach assumes all microbial removal is due to an RO system. This approach also assumes that a POU device will be used in every household in the United States (325,310,000 population), each household averages 2.58 individuals (U.S. Census 2010), and annual reverse osmosis POU treatment cost equal to $136 ($680 per 5 years [$300 initial cost and $95 per year after the first year]) per household per year ($52.71 per person) for a national household intervention cost of $17.1B, annually. Equation 1 $USD per averted case=|(〖Cost〗_i-〖Cost〗_n)/(〖Cases〗_i-〖Cases〗_n )| In Equation 1, Costn equals no intervention, Costi equals POU intervention, Casei equals the number of cases without a POU device intervention, and Casesn equals the number of estimated cases expected using a POU device intervention. In this case, the POU intervention is a RO system which includes pre-filtration and activated carbon filtration. The sum value of an RO system ($680/5 year) was divided by 5 years to form an annual POU intervention cost of $136. Other POU devices are approved for the treatment of microorganisms (e.g. UV systems). However, the current study utilized information from the epidemiological study undertaken by Payment et al. (1991) who examined the effects of an intervention (RO system with

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