A randomized trial to evaluate the risk of gastrointestinal disease due to consumption of drinking water meeting current microbiological standards

P. Payment, L. Richardson, J. Siemiatycki, R. Dewar, M. Edwardes and E. Franco

American Journal of Public Health, 1991, vol. 81, issue 6, 703-708

Abstract: Background: This project directly and empirically measured the level of gastrointestinal (GI) illness related to the consumption of tapwater prepared from sewage-contaminated surface waters and meeting current water quality criteria. Methods: A randomized intervention trial was carried out; 299 eligible households were supplied with domestic water filters (reverse-osmosis) that eliminate microbial and chemical contaminants from their water, and 307 households were left with their usual tapwater without a filter. The GI symptomatology was evaluated by means of a family health diary maintained prospectively by all study families over a 15-month period. Results: The estimated annual incidence of GI illness was 0.76 among tapwater drinkers compared with 0.50 among filtered water drinkers (p

Date: 1991
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Persistent link: https://EconPapers.repec.org/RePEc:aph:ajpbhl:1991:81:6:703-708_8

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