Kua hangaia ngā mita rere hikohiko raupapa WPLD hei ine i te tere rere rōrahi o te nuinga o ngā wai e kawe hiko ana, tae atu ki ngā paru, ngā whakapiri me ngā para i roto i ngā paipa. Ko te whakaritenga matua ko te iti rawa o te kawe hiko o te reo. He iti noa te pānga o te pāmahana, te pēhanga, te matotoru me te mātotoru ki te hua. Ka tukuna e ā mātou momo tuku rere aukume te mahi pono me te ngāwari o te tāutanga me te tiaki.
He whānuitia ngā otinga rere o te mita rere aukume raupapa WPLD me ngā hua kounga teitei, tika me te pono. Ka taea e ā mātou Hangarau Rere te whakarato i tētahi otinga mō te nuinga o ngā tono rere. He pakari te tuku, he iti te utu, ā, he pai mō ngā tono katoa, ā, he tika te ine o te ± 0.5% o te tere rere.