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Table 2

Results of the Mann–Whitney U test to compare willingness to use treated wastewater given a particular motivator across respondents in low-technology and high-technology sites

MotivatorsWastewater technology levelNMedianRank averageSum of ranksUp
Cost High 140 0.0 125.57 17,580.0 7,710.0 0.04* 
Low 129 0.0 145.23 18,735.0 
Current water shortages High 140 1.0 127.66 17,872.5 8,002.5 0.10 
Low 129 1.0 142.97 18,442.5 
Future water shortages High 140 1.0 122.41 17,138.0 7,268.0 0.00* 
Low 129 3.0 148.66 19,177.0 
Ecological conservation High 140 1.5 120.47 16,866.0 6,696.0 0.00* 
Low 129 3.0 150.77 19,449.0 
MotivatorsWastewater technology levelNMedianRank averageSum of ranksUp
Cost High 140 0.0 125.57 17,580.0 7,710.0 0.04* 
Low 129 0.0 145.23 18,735.0 
Current water shortages High 140 1.0 127.66 17,872.5 8,002.5 0.10 
Low 129 1.0 142.97 18,442.5 
Future water shortages High 140 1.0 122.41 17,138.0 7,268.0 0.00* 
Low 129 3.0 148.66 19,177.0 
Ecological conservation High 140 1.5 120.47 16,866.0 6,696.0 0.00* 
Low 129 3.0 150.77 19,449.0 

*Significantly different at 95% confidence level.

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