Translations:Wasseraufbereitung und Grauwassernutzung/990/en

$Q_{daily\ need}=4\ \times \left({\dfrac {25\ {\frac {L}{Person}}}{toilet}}+{\dfrac {13\ {\frac {L}{person}}}{{\mathit {wa}}shing\ machine}}+{\dfrac {5\ {\frac {L}{person}}}{cleaning}}+{\dfrac {5\ {\frac {L}{person}}}{irrigation}}\right)=192\ {\frac {L}{day}}$