Ka whakamahia te mīhini pēhi wiri whakamaroke hei whakamaroke me te whakamaroke i ngā wai paru. Ko ngā wai paru he wai kei roto ngā totoka iri, ka taea te whakaputa mai i te maimoatanga wai para, te ahumahi tukatuka kai, te ahumahi matū me ētahi atu momo mahi a te tangata.

Ko te mīhini whakamaroke paru tīwiri he taputapu wehewehe totoka-wai hou, e whakamahi ana i te mātāpono whakaputa tīwiri, e whakaputa ana i te kaha whakaputa kaha mā te whakarerekē i te diameter me te teitei o te tīwiri, me te āputa iti i waenga i te mowhiti neke me te mowhiti pumau, hei whakatutuki i te whakamaroke o te paru.