NIWA Scientist Jason Park collecting effluent from the outlet of Gisborne’s Biological Trickling Filter | Earth Sciences New Zealand | NIWA

On 1 July 2025, NIWA merged with GNS Science to become Earth Sciences New Zealand.

NIWA Scientist Jason Park collecting effluent from the outlet of Gisborne’s Biological Trickling Filter to test settling and dewatering rates of the suspended sludge.