ariā tātari ahumahi:
Ko te whiriwhiringa ahumahi he ahua o te whiriwhiringa, e whakamahia nuitia ana i roto i te whakarewa, te ahumahi matū, te hinu hinu, te hanga pepa, te rongoa, te kai, te maina, te hiko hiko, me te whakarato wai o te taone.Pērā i te wai para ahumahi, te filtration o te wai rere, te whakahou o te whakaehunga, te filtration me te maimoatanga o te hinu para, te punaha wai whakarewa tonu, te punaha wai oumu i roto i te umanga miihini, te punaha whakaheke wai pehanga nui mo te hurihuri wera.He taputapu tātari aunoa, he pai me te ngawari ki te whakahaere.