Ka tukuna e mātou he ratonga hoahoa e ai ki tāu tātari wai, ka taea e mātou te whakarato taputapu e ai ki ō hiahia.
1. Ka whakamahia e te pūnaha tētahi tikanga ā-tinana, kāore he panoni āhua, hei tango tote me te pure i te wai kei roto ngā pakiaka i raro i ngā āhuatanga kati kōtuhi. Ka taea e te tere tango tote te eke ki te neke atu i te 99.9%, ā, ka taea te tango i ngā mea korō, ngā mea rauropi, ngā huakita, ngā huaketo, me ētahi atu i roto i te wai i te wā kotahi;
2. Ko te pēhanga wai anake te mea e whakamahia ana hei whakapūmau i te purenga wai, ā, ko tōna whakapaunga pūngao te mea iti rawa i roto i ngā tikanga maimoatanga wai maha;
3. Ka taea e te pūnaha te mahi tonu hei whakaputa wai, he māmā noa te pūnaha, he ngāwari ki te whakahaere, ā, he pumau te kounga wai o te hua;
4. Kāore he tukunga o ngā wai para matū, kāore he tukanga maimoatanga whakakore i ngā para waikawa me te kawakore, ā, kāore he parahanga taiao;
5. He tino aunoa te taputapu pūnaha, ā, he iti noa te kawenga mahi whakahaere me te tiaki taputapu;
6. He iti te wāhi e nohoia ana e te taputapu, ā, he iti ake te wāhi e hiahiatia ana;
7. Ka eke te tere tango o ngā kōroiti pērā i te silica me ngā mea rauropi i roto i te wai ki te 99.5%;
8. Ka taea e ngā taputapu pūnaha te mahi tonu hei whakaputa wai, me te kore e aukati i te whakaora me ētahi atu mahi.
I te pāmahana wai iti rawa e tomo mai ana, i te kounga wai kino rawa atu, me te tere rere mōrahi, me tutuki i te kounga wai kua tukatukahia o te pūnaha ngā whakaritenga a te kaiwhakamahi.