1. Hana ʻia ke kiʻiʻoniʻoni UF me nā membrane ultrafiltration, ʻoiai ʻo ke kiʻiʻoniʻoni Ro me nā membrane osmosis hoʻohuli.

2. Hoʻohana ʻia ke kiʻiʻoniʻoni UF no ka wehe ʻana i nā ʻāpana nui a me nā molekala, ʻoiai ʻo ke kiʻiʻoniʻoni Ro e hoʻohana ʻia no ka wehe ʻana i nā ʻāpana liʻiliʻi a me nā molekala.
3. ʻOi aku ka haʻahaʻa o ka hōʻole ʻana o ka ʻili UF ma mua o ka ʻili Ro, ʻo ia hoʻi, hiki i kekahi mau mea haumia ke hele ma waena o ka ʻili UF, ʻoiai ʻoi aku ka kiʻekiʻe o ka hōʻole ʻana o ka ʻili Ro.
4. Hoʻohana ʻia ka ʻili UF i nā noi mālama wai e like me ka mālama mua ʻana no nā ʻōnaehana RO, ʻoiai hoʻohana ʻia ka ʻili Ro i ka desalination a me nā noi wai maʻemaʻe kiʻekiʻe ʻē aʻe.
5. ʻOi aku ka liʻiliʻi o ke kaomi e pono ai no ka ʻili UF ma mua o ka ʻili Ro, e ʻoi aku ka mālama pono ʻana i ka ikehu.
6. ʻOi aku ka maikaʻi o ke kumukūʻai o ka kiʻiʻoniʻoni UF ma mua o ka kiʻiʻoniʻoni Ro, e lilo ia i koho kaulana no nā noi mālama wai ʻoihana a me ke kūlanakauhale.