Greywater Treatment by Ecological Sanitation (ECOSAN)
This comprises of a grey water piping collection system, oil and grease tank, biofilter and a constructed wetland.

Biogas Blackwater Treatment System for a Boarding School
Design, construction and installation of a biogas treatment system.

Biological Indicators for Sarawak River
Monitoring of abundance and studying the movement of fish, prawns, shrimps and benthic macroinvertebrates as possible biological indicators of river pollution.