La'au fa'ama'i la'au fa'ama'i lapisi - LD fale fa'amama otaota fa'ameamea vaega, gafatia togafitiga i aso uma o le 0.3-0.5m3/d, la'ititi ma fetu'una'i, fa'asaoina avanoa o le fola. E fa'amalieina e le STP mana'oga mo le fa'amama otaota mo aiga, nofoaga mata'ina, villas, chalets ma isi fa'aaliga, e matua fa'amama ai le mamafa o le si'osi'omaga o le vai.