Associations between Perceptions of Drinking Water Service Delivery and Measured Drinking Water Quality in Rural Alabama

International Journal of Environmental Research and Public Health

Rick Forehand¹  Jessica C. Wedgworth²  Julie B. Olson²  Mark Elliott³  Pauline Johnson³  Christine E. Stauber⁴  Joe Brown⁵ 

[1] Barge Waggoner Sumner and Cannon Inc., 2047 West Main Street, Suite 1, Dothan, AL 36301, USA;Department of Biological Sciences, University of Alabama, 300 Hackberry Lane, Tuscaloosa,AL 35487, USA;Department of Civil and Environmental Engineering, University of Alabama, 245 7th Avenue, Tuscaloosa, AL 35487, USA;Division of Environmental Health, School of Public Health, Georgia State University,P.O. Box 3995, Atlanta, GA 30302, USA;School of Civil and Environmental Engineering, Georgia Institute of Technology, 311 Ferst Drive, Atlanta, GA 30332, USA;

关键词: small water supply;    rural;    water quality;    perceived service;    drinking water quality;    infrastructure;    environmental health;   

DOI  :  10.3390/ijerph110707376

来源: DOAJ

【 摘 要 】

Although small, rural water supplies may present elevated microbial risks to consumers in some settings, characterizing exposures through representativepoint-of-consumption sampling is logistically challenging. In order to evaluate the usefulness of consumer self-reported data in predicting measured water quality and risk factors for contamination, we compared matched consumer interview data withpoint-of-survey, household water quality and pressure data for 910 households served by 14 small water systems in rural Alabama. Participating households completed one survey that included detailed feedback on two key areas of water service conditions: delivery conditions (intermittent service and low water pressure) and general aesthetic characteristics (taste, odor and color), providing five condition values. Microbial water samples were taken at the point-of-use (from kitchen faucets) and as-delivered from the distribution network (from outside flame-sterilized taps, if available), where pressure was also measured. Water samples were analyzed for free and total chlorine, pH, turbidity, and presence of total coliforms and Escherichia coli. Of the 910 households surveyed, 35% of participants reported experiencing low water pressure, 15% reported intermittent service, and almost 20% reported aesthetic problems (taste, odor or color). Consumer-reported low pressure was associated with lower gauge-measured pressure at taps. While total coliforms (TC) were detected in 17% of outside tap samples and 12% of samples from kitchen faucets, no reported water service conditions or aesthetic characteristics were associated with presence of TC. We conclude that consumer-reported data were of limited utility in predicting potential microbial risks associated with small water supplies in this setting, although consumer feedback on low pressure—a risk factor for contamination—may be relatively reliable and therefore useful in future monitoring efforts.

【 授权许可】

Unknown