(1) Ki te kore e whakamahia te toha wai hauwai mo te wa roa, whakawetohia te hiko. I tenei wa, me werohia he wai parakore ki roto i te taika wai parakore kia makuku te kōwae hauwai.
(2) Ki te kore e whakamahia mo te wa roa, kaua e penapena wai ki roto i te puna wai inu kia kore ai e tupu te huakita me nga haunga kee i roto i te wai.
(3) Ko te wai i tapirihia ki te puna wai parakore me whai TDS (Total Dissolved Solids) iti iho i te 5 PPM. Ka taea te whakamahi i te wai parakore, i te wai parakore ranei.
(4) He mea tika kia tutuki te puna wai i tapirihia ki te puna wai inu ki nga paerewa mo te wai inu.
(5) Ina whakamahia he hua hou i te wa tuatahi, ka piki haere te kukū hauwai. Whai muri i te whakamahi haere tonu mo te kotahi wiki, ka pumau te kukū hauwai i roto i te wai putanga ka tae ki te paerewa hauwai i hangaia mo te hua.