Western Water Catchment 西部集水区 is a planning area located in the West Region of Singapore. The planning area borders Tuas and Pioneer to its south, Sungei Kadut, Choa Chu Kang and Tengah to its east, Jurong West to its southeast, Lim Chu Kang to its north and the Straits of Johor to its west.
The area 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 bounds to all members in the public except for military personnel from Pasir Laba Camp (South) and Sungei Gedong Camp (North).
The SAFTI Live Firing Area commenced operations in 1968 and was revamped in 2008, the eastern part began operations in 2002 and has been extended to Lim Chu Kang Tracks 11 and 13, but it has been remained unnamed, and it could be named 'Murai North'.
There are 15 districts in Western Water Catchment.
- Bahtera
- Bajau
- Kapal
- Lorong Danau
- Murai
- Murai North
- Nanyang Bridge
- Nanyang Crescent
- Nanyang Gateway
- Pasir Laba
- Peng Kang Hill
- Poyan
- SAFTI City
- Sarimbun
- Sungei Gedong
- Thousand Oaks
- Wrexham