Kare tsarin tace ruwa da amfani da ruwa
kayan aikin gida.
Wani lokaci, ana buƙatar babban matakin tacewa don takamaiman aikace-aikace a cikin sabis na ruwa, yayin da ƙananan matakin tacewa ya isa ga sauran ginin.A cikin waɗannan da sauran lokuta, yana da kyawawa don amfani da tsarin tace ruwa mai tacewa.Yin haka yana tace datti mafi girma da tsatsa, kuma yana tsawaita rayuwar wasu, (mafi girman farashin kulawa) mafi girman tsabtace ruwa.