Rennell and Bellona face significant water challenges because of the lack of access to safe drinking water. This is more so during droughts and periods of low rainfall. The proposed desalination and filtration plant aims to address these issues by providing a reliable source of clean water for daily use, sanitation, and small-scale agriculture. ​

Access to safe water is crucial for maintaining hygiene and preventing waterborne diseases, which are prevalent during dry spells. Reliable water supply also supports small-scale agriculture, enabling farmers to irrigate crops and sustain food production, thereby enhancing food security.

The desalination and filtration plant represents a proactive step toward ensuring sustainable water availability, improving public health, and supporting the livelihoods of communities in Rennell and Bellona.