Kei te hanga ngā kāwai pūtahi wai mō te whakatere i ēnei rūngaro, me ngā tūtohi e whai ake nei ki roto i ngā mahi whakarite wai. E āhei ana enei kāwai pūtahi ki te hīkoi i ngā rūngaro pērā i ngā kohinga, ngā porowhita, ngā whakamahana, me ngā take pH - whakatika. Kua tohua ngā momo kākano ki runga i ngā rūngaro e pai ana ki ngā momo rūngaro whakarite wai, ka whakamahi anō i te whetūwhenua mō tōna oranga me tōna āheinga ki te korerotia, nō reira ka whakamahi i ngā polimera kē ki ēnei rūngaro matataki. Kei raro i ēnei, ngā raraunga tata ki te whakamana i te tino tika o te whakapakoko i ngā rūngaro ki ngā whare wai whakarite. Kia whai mana rawa, me te whai oranga, ngā kāwai pūtahi wai whakarite e mahi ana i te taha o te whakarawea i te pai o te wai, me te whakawātea i te hīkoi i ngā rūngaro whakarite ki ngā wāhi katoa.