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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 J+Water+Process+Eng
2020 ; 37
(ä): 101409
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System dynamics evaluation of household water use behavior and associated
greenhouse gas emissions and environmental costs: A case study of Taipei city
#MMPMID38620561
Chen YC
J Water Process Eng
2020[Oct]; 37
(ä): 101409
PMID38620561
show ga
Taiwan is an island surrounded by sea and only 19 % of its freshwater usage is
for domestic applications. A system dynamic model was developed to investigate
interactions between household water use behaviors (toilet flushing, clothes
washing, bathing/showering, and cleaning) and associated greenhouse gas emissions
and environmental costs. Six hundred and fifty face-to-face interviews were
conducted in 12 districts of Taipei. The results showed that the respondents'
individual attributes were not significantly related to water use behaviors. The
highest volume of water was used for cleaning (27.7 %), followed by clothes
washing (26.2 %), bathing/showering (26.1 %), and toilet flushing (20.0 %). Five
water management scenarios with 5 %-20 % reductions in water volume from
different water use behaviors were simulated. The maximum reduction in water use
(6.27 t) was found in the fifth scenario (20 % reduction), which reflected the
priority the respondents gave to save water if its price increased. 27.2 % of
respondents had water saving appliances; 20.5 % and 16.4 % of the appliances were
toilets and shower heads, respectively. The environmental cost of GHG emissions
associated with water use behavior was US$0.001/t, causing an 8% increase in
water price. A better understanding of household water use behaviors is needed to
develop bottom-up strategies or measures for sustainable water management. Water
saving measures or strategies would lead to targets being met in a short time.