Report summarising results of Cost benefit analysis to provide information to the Government of Kiribati on the potential costs, benefits and policy issues related to freshwater management options for the Bonriki Water Reserve. This economic analysis provided an assessment of the costs and benefits of using either rainwater or reverse osmosis desalination to fully supplement the Bonriki groundwater so that a target daily water volume (1,700 kL/day) can consistently be produced by the Government Public Utilities Board (PUB) in the face of threats to the supply. The resulting least-cost option was then used in scenario analysis to estimate the cost of seawater inundation (and rainfall variability) to the PUB in terms of their effect on overall water production costs.

The Bonriki Inundation Vulnerability Assessment (BIVA) project aimed to improve understanding of the vulnerability of the Bonriki freshwater reserve to coastal hazards and climate variability and change. Improved knowledge of risks to this freshwater resource will enable better adaptation planning by the Government of Kiribati. This BIVA project was supported by the Pacific-Australia Climate Change Science Adaptation Planning (PACCSAP) programme.

Publication Year
2 015
Anna Rios Wilks
Resource Type
Rights Statement
Copyright Secretariat of the Pacific Community (SPC) 2015. All rights for commercial/for profit reproduction or translation, in any form, reserved. SPC authorises the partial reproduction or translation of this material for scientific, educational or research purposes, provided that SPC and the source document are properly acknowledged. Permission to reproduce the document and/or translate in whole, in any form, whether for commercial / for profit or non-profit purposes, must be requested in writing. Original SPC artwork may not be altered or separately published without permission.
Attribution Statement
Wilks. A. R., (2015): Bonriki Inundation Vulnerability Assessment - Economic analysis of water management options for impacts from inundation and climate variability under current abstraction rates, Bonriki water reserve, South Tarawa, Kiribati. SPC Technical Report SPC00011. Suva, Secretariat of the Pacific Community.
General Note
Custodian: Paula Holland [email protected]
Secretariat of the Pacific Community