Ngā āhuatanga hanga: Te whakarerekētanga o te raina whakapūkara wai, te raina whakawhānui, te raina kuru paura tino pai, te paipa whatunga hau me ngā taputapu tiaki taiao; Te whakatikatika i te pūnaha maimoatanga wai.
Tukanga matua: te rehu wai (te mimiti i te rehu parahanga) tae noa ki te tukunga paerewa.
