Aia kēia pūnāwai wai pipi i kahi ʻōnaehana kānana quadruple ʻaʻole e mālama wale i ka wai ma o ke kahe ʻana, akā hoʻopau pū kekahi i nā haumia.Aia i loko o ka ʻōnaehana: 1) He kānana kānana mua e wehe i nā haumia nui e like me ka lauoho holoholona, 2) kānana kiʻekiʻe kiʻekiʻe ka pulupulu kānana e ālai i ka sediment, ʻōpala, a me nā micro-particles ʻē aʻe, 3) ʻO ke kalapona i hoʻōla ʻia ka pūpū niu e hoʻopau i ke koena chlorine a nā mea ʻino ʻē aʻe, a me 4) Ion exchange resin e hoʻoneʻe i nā ion metala kaumaha a me nā iona ʻino ʻē aʻe ma o ka hana kemika.Mālama kēia i ka hoʻomau ʻana o ka wai i ke ʻano kiʻekiʻe no kāu mau holoholona.