Nā ngā tīrahi kōhao karbona te whiwhinga i tētahi whakaaetanga me te whakamahere āhuatanga mo te hokohoko i ētahi atu rite o ngā wai. Ko te hanganga karbona he whakapae mō tētahi pūnaha me te taurite, e taea ana te whanake i ngā pāpā me ngā momo whenua i runga i te mahi o te horopaki. Ki te he kore ake te karbona i te whakangungu i te whakarere ki ngā momo whenua nui rawa, ka taea te whakamahi mō ngā taonga pūmau, ētahi momo wai mahi, me ngā wai kore whakangungu. Ka taea hoki te whakapai ake i ēnei tīrahi me ngā kaiwhakapai takeiti rānei, me ngā kaiwhakapai rānei hei whakapai i ō rātou hīnga me te roa o te mahi. Nō reira, e whaihua ana ngā tīrahi karbona i ngā marae mahi e hiahia ana ki te whakamahere āhuatanga me te taurite i te whakatuku wai.