He mea pono ka mea hoʻomaʻemaʻe wai no nā ʻoihana like ʻole a me nā ʻoihana.
Ua hoʻolālā ʻia e lawelawe i nā nui wai he nui a hōʻoia i kona maʻemaʻe a me kona maikaʻi. Me ka ʻenehana kānana holomua, hiki iā ia ke wehe pono i nā mea haumia, nā mea haumia, a me nā mea ʻino e like me nā bacteria, nā virus, nā metala kaumaha, a me nā kemika.