The Western Water Catchment (; ; ) currently houses four reservoirs, Tengeh Reservoir, Poyan Reservoir, Murai Reservoir and Sarimbun Reservoir. The Western Water Catchment is also a live-firing area in which it is used by the Singapore Armed Forces for training purposes. It is also a restricted area in which it is out of bound to all members in the public except for military personnel from Pasir Laba Camp (South) and Sungei Gedong Camp (North).