Ruwan yamma

Ruwan sharar gida (ko sharar ruwa) shine ruwan da aka samar bayan amfani da ruwa mai kyau, danyen ruwa, ruwan sha ko ruwan gishiri a cikin aikace-aikace ko matakai daban-daban na gangan.Wastewater engineering : treatment and reuse (4th ed.). Boston: McGraw-Hill. ISBN 0-07-041878-0. OCLC 48053912. Wani ma'anar ruwan datti shine "Ruwan da aka yi amfani da shi daga kowane haɗin gida, masana'antu, kasuwanci ko ayyukan noma, zubar da ruwa / ruwan guguwa, da kowane magudanar ruwa ko magudanar ruwa.