Ko ngā rerekētanga matua i waenga i ngā mita rere o te tāpine me ngā mita rere o te vortex koia ēnei:
Pāpāho ine
Tāpine: Mō ngā wai ma, iti te matotoru (wai, tīhiera, hinu, me ētahi atu) anake.
Vortex: Ka taea te ine i te wai, te hau, me te mamaoa
Te tika
Tāwhana: Te tika teitei ake, te nuinga o te wā ±0.2% ~ ±0.5%
Āwhiowhio: Tikanga waenga, te nuinga o te wā ±1.0% ~ ±1.5%
Ngā whakaritenga āhua pāpāho
Tāpine: Me tino ma te wai; ka pakaru ngāwari i ngā matūriki.
Vortex: He ātete ake ki ngā poke iti, kāore e ngāwari ki te aukati.
Te tiaki me te oranga
Tāpine: He wāhanga e neke ana, me tiaki tonu, he poto ake te roa o te mahi.
Vortex: Kāore he wāhanga neke, he pumau, he roa te ora ratonga, he iti te tiaki.
Ngā horopaki tono
Tāpine: Whakamahia mō te ine wai tino tika (ngā pūnaha waipēhi, te puranga, te tohatoha wahie)
Vortex: He whānuitia te whakamahinga mō te mamaoa, te hau kōpeke, te wai, me te ine pūngao ahumahi whānui
Wā tuku: 21 Paenga-whāwhā 2026