Project final report

Closing the loop between agriculture and wastewater discharge: A novel technique for turning wastewater into fertiliser in the Pacific - Final report

Date released
21 December 2021
Publication Code

Cherise Addinsall, Douglas Tait and Shane Mckintosh (Eds)

Co-authors: Jessie Kampai, Uatea Vave and Norah Rihai


This project aimed to assess the potential to ‘close the loop’ in Pacific Island agriculture by converting domestic and agricultural wastewater into a stable, pathogen-free, organic fertiliser.

Agricultural communities throughout the Pacific Islands are reliant on expensive imported fertilisers. Ironically, nutrient-rich domestic wastewaters are discharged into groundwater and coastal lagoons where they degrade water quality and impact human health. The project undertook a comparative, gender-balanced scoping study in Tuvalu and Vanuatu, two islands with contrasting socio-economic conditions, and assessed the suitability and community acceptability of different waste streams and treatments in order to determine the feasibility and uptake of recovered wastewater nutrients for agriculture in the Pacific.

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