Urban Public Satisfaction with Drinking Water Since 2002 in the Pacific Northwest, USA

Urban Public Satisfaction with Drinking Water Since 2002 in the Pacific Northwest, USA

R.L.Mahler M.E.Barber  B.Shafii 

Soil and Environmental Sciences, University of Idaho, Moscow, Idaho, USA

Department of Civil and Environmental Engineering, University of Utah, Salt Lake City, Utah, USA

Department of Plant, Soils and Entomological Sciences, University of Idaho, Moscow, Idaho, USA

31 October 2015
| Citation



The purpose of this paper is to document drinking water issues and concerns of the urban public in the Pacific Northwest, USA. Urban residents of the Pacific Northwest region of the USA consider drinking water their most important water resource issue. A survey instrument was developed to measure urban satisfaction with drinking water supplies. Data were collected using mail-based surveys conducted at five-year intervals in 2002, 2007 and 2012. Each survey contained 11 questions about drinking water and was mailed to 2,200 randomly chosen residents of Alaska, Idaho, Oregon and Washington. Return rates in excess of 50% were received for each survey ensuring that the results are statistically valid. On a regional basis 60.7, 64.1 and 68.8% of Pacific Northwest residents relied on public water supply systems for their drinking water in 2002, 2007 and 2012, respectively. This number increased to between 79% (2002) and 86% (2012) when only urban residents were considered. Over 86% of urban residents felt that water they obtained from the tap in their home was safe to drink. However, over 26% of survey respondents reported that they often used bottled water. Very little of this bottled water is consumed in the home and instead used more as a convenience rather than for health-related issues. Bottled water use significantly declined between 2007 and 2012. Almost one in four urban residents had a secondary water filter in their home. The use of in-home filters has increased significantly since 2002. Approximately 15% of survey respondents identified minerals (hard water) as a concern in their drinking water. However, other potential contaminants including pathogens, nitrates, pesticides and heavy metals were identIfied as problems by less than 5% urban residents. Overall, the urban public is satisfied that their home drinking water is safe; however, in the last 10 years there has been a trend toward more skepticism and additional in-home treatment of drinking water.


Public opinion, drinking water issues, drinking water safety, adult education, public outreach, bottled water, home water treatment


[1] Gleick, P.H., The human right to water. Water Policy, 1(5), pp. 487–503, 1998.

[2] Chenoweth, J.L., Minimum water required for social and economic development. Desalination, 229, pp. 245–256, 2008. doi: http://dx.doi.org/10.1016/j.desal.2007.09.011

[3] Gleick, P.H., Basic water requirements for human activities: meeting basic needs. Water International, 21(2), pp. 83–92, 1996. doi: http://dx.doi.org/10.1080/02508069608686494

[4] Falkenmark, M., Fresh water – time for a modified approach. Ambio, 15, pp. 192–200, 1986.

[5] World Water Assessment Programme, Water for People, Water for Life: The United Nations World Water Development Report, UNESCO Publishing/Berghahn Books: Paris, 2003.

[6] WHO/UNICEF, Joint monitoring programme for water supply and sanitation, Global Water Supply and Sanitation Assessment 2000 Report, WHO/UNICEF: Washington, 2000.

[7] Howard, G. & Bartram, J., Domestic Water Quantity, Service, Level and Health, World Health Organization: Geneva, 2003.

[8] Greenhalgh, A., Healthy living – water, BBC Health, March, 2001.

[9] Kalbermatten, J.M., Water and sanitation for all, will it become reality or remain a dream? Water International, 16, pp. 121–126, 1991. doi: http://dx.doi.org/10.1080/02508069108686104

[10] Dunlap, R.E., Trends in public opinion toward environmental issues: 1965-1990. Society & Natural Resources, 4, pp. 285–312, 1991. doi: http://dx.doi.org/10.1080/08941929109380761

[11] Falahee, M. & MacRae, A., Consumer appraisal of drinking water: multidimensional scaling analysis. Food Quality and Preference, 6, pp. 327–332, 1995. doi: http://dx.doi.org/10.1016/0950-3293(95)00035-6

[12] Fawell, J.K. & Miller, D.G., Drinking water quality and the consumer. Journal of the Institution of Water and Environmental Management, 6, pp. 726–732, 1992. doi: http://dx.doi.org/10.1111/j.1747-6593.1992.tb00726.x

[13] Syme, G.J. & Williams, K.D., The psychology of drinking water quality: and exploratory study. Water Resources Research, 29(12), pp. 4003–4010, 1993. doi: http://dx.doi.org/10.1029/93wr01933

[14] Dupont, D.P., Tapping into consumer perceptions of drinking water quality in Canada: capturing consumer demand to assist in better management of water resources. Canadian Water Resources Journal, 30(1), pp. 11–20, 2005. doi: http://dx.doi.org/10.4296/cwrj300111

[15] Krewski, D., Slovic, P., Bartlett, S., Flynn, J. & Mertz, C.K., Health risk perception in Canada II: worldviews, attitudes and opinions. Human and Ecological Risk Assessment, 1(2), pp. 53–70, 1995.

[16] Means, E.G., Drinking water quality in the new millennium: the risk of underestimating public perception. Journal of the American Water Works Association, 94(8), pp. 28–33, 2002.

[17] Wright, J.A., Yang, H., Rivett, U. & Gundrg, S.W., Public perception of drinking water safety in South Africa 2002-2009: a repeated cross-sectional study. BMC Public Health, 12, p. 556, 2012. doi: http://dx.doi.org/10.1186/1471-2458-12-556

[18] Doria, M., Factors influencing public perception of drinking water quality. Water Policy, 12, pp. 1–19, 2010. doi: http://dx.doi.org/10.2166/wp.2009.051

[19] Doria, M., Pidgeon, N. & Hunter, P.R., Perceptions of drinking water quality and risk and its effect on behavior: a cross national study. Science of the Total Environment, 407(21), pp. 5455–5464, 2009. doi: http://dx.doi.org/10.1016/j.scitotenv.2009.06.031

[20] McGuire, M.J., Off-flavor as the consumers’ measure of drinking water quality. Water Science and Technology, 31(11), pp. 1–8, 1995. doi: http://dx.doi.org/10.1016/0273-1223(95)00448-v

[21] Dunlap, R.E. & Scarce, R., Poll trends: environmental problems and protection. The Public Opinion Quarterly, 55(4), pp. 651–672, 1991. doi: http://dx.doi.org/10.1086/269288

[22] Mahler, R.L., Simmons, R. & Sorensen, F., Drinking water issues in the Pacific Northwest. Journal of Extension, 43(6), 6RIB6, available at www.joe.org/joe/2005december/rb6.shtml, 2005.

[23] Ross, V., The determinants of trust and satisfaction with drinking water quality. ARCWIS Occasional Paper, 2005.

[24] Tyler, T.R. & Degoey, P., Trust in organizational authorities. Trust in Organizations, Frontiers of Theory and Research, eds. R.M. Kramer & T.R. Tyler, Sage: London, 1996

[25] Doria, M., Bottled water versus tap water: understanding consumers-preferences. Journal of Water Health, 2006, pp. 271–276, 2006.

[26] Hu, Z., Morton, L.W. & Mahler, R.L., Bottled water: United States consumers and their perceptions of water quality. International Journal of Environmental Research and Public Health, 8, pp. 565–578, 2011. doi: http://dx.doi.org/10.3390/ijerph8020565

[27] Levallois, P., Grondin, J. & Gingras, S., Evaluation of consumer attitudes on taste and tap water alternatives in Quebec. Water Science and Technology, 40(6), pp. 135–139, 1999. doi: http://dx.doi.org/10.1016/s0273-1223(99)00549-1

[28] Faure, M.G., The EC Directive on Drinking Water: Institutional Aspects, Springer: The Netherlands, 87 pp., 1994.

[29] Biswas, A.K., Water management for major urban centres. Water Resources Development, 22(2), pp. 183–197, 2006. doi: http://dx.doi.org/10.1080/07900620600690789

[30] Johnson, B.B., Do reports on drinking water affect customers’ concerns? Experiments in report content. Risk Analysis, 23(5), pp. 985–998, 2003. doi: http://dx.doi.org/10.1111/1539-6924.00375

[31] Carter, L.W., Nelson, D.I. & Everett, J.W., Public perceptions of water quality risks – influencing factors and enhanced opportunities, Journal of Environmental Systems, 22(2), pp. 163–187, 1992. doi: http://dx.doi.org/10.2190/93d9-jf0n-eef8-w4pw

[32] Mahler, R.L., Simmons, R., Sorensen, F. & Miner, J.R., Priority water issues in the Pacific Northwest. Journal of Extension, 42(5), Article 5RIB3, available at http://www.joe.org/joe/2004october/rb3.php, 2004.

[33] Mahler, R.L., Smolen, M.D., Borisova, T., Boellstorff, D.E., Adams, D.C. & Sochacka, N.W., The national water survey needs assessment program. Natural Sciences Education, 42(1), pp. 98–103, 2013.

[34] Salent, P. & Dillman, D., How to Conduct Your Own Survey, John Wiley and Sons, Inc.: New York, 1994.

[35] Dillman, D., Mail and Internet Surveys: The Tailored Design Method. John Wiley and Sons, Inc.: New York, 2000.

[36] Mahler, R.L., Gamroth, M., Pearson, P., Sorenson, F., Barber, M.E. & Simmons, R., Information sources, learning opportunities and priority water issues in the Pacific Northwest. Journal of Extension, 48(2), Article 2RIB2, available at: http://www.joe.org/joe/2010april/rb2.php, 2010.

[37] SAS Institute Inc., SAS Online Document 9.1.3. Cary, SAS Institute Inc.: North Carolina, 2004.

[38] Mahler, R., Barber, M. & Shafii, B., Drinking water issues and concerns of urban residents of the Pacific Northwest, USA. WIT Transactions on the Built Environment, 139, ISSN 1743-3509, 2014. doi: http://dx.doi.org/10.2495/uw140171