Physico-chemical properties of water are usually reflecting the functioning of an aquatic ecosystem like Setiu Wetland, Terengganu. Therefore, this study was conducted to determine the physico-chemical properties and chemical nature of their water resources (trench, rivers, drainage and tap water) and their impact on sustainable water resource in Setiu Wetland, Terengganu. A total of 12 water samples were collected aseptically from in this area and the field work was conducted from August to September 2015. In-situ measurements of physico-chemical properties of the water samples were recorded using YSI Professional Plus Parameter (XYLEM, USA) with multi-sensor probe. The analyses of physico-chemical of water include of water temperature, barometric pressure, dissolved oxygen, specific conductance, conductance, redox potential, total suspended solids, salinity and pH. In comparison to previous study conducted in 2008, most of the parameters showed that water quality at Setiu Wetland, Terengganu remained Class 1 based on National Water Quality Standards for Malaysia. In conclusion, the various water resources in Setiu Wetland was in very good condition indicating that the habitats in Setiu Wetlands have conditions suitable to support a biotic community. Further study should be carried out in monitoring water qualities of the water resources at Malaysia to increase safety of water consumption. � Springer Nature Switzerland AG 2019.