Western Water Catchment

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Western Water Catchment
Planning Area
Other transcription(s)
 • Chinese 裕廊东
 • Pinyin Yù Láng Dōng
 • Hokkien Jū-lông Tong
 • Malay Jurong Timur
 • Tamil ஜூரோங் கிழக்கு
Western Water Catchment Area
Western Water Catchment Area
Western Water Catchment is located in Singapore
Western Water Catchment
Western Water Catchment
Location in Singapore
Coordinates: 1°23′13″N 103°41′31″E / 1.387°N 103.692°E / 1.387; 103.692Coordinates: 1°23′13″N 103°41′31″E / 1.387°N 103.692°E / 1.387; 103.692
Country  Singapore

West Region

Town councils
  • Chua Chu Kang Town Council
  • West Coast Town Council
 • Mayor

South West CDC

 • Members of Parliament

Chua Chu Kang GRC

West Coast GRC

 • Total 17.83 km2 (6.88 sq mi)
 • Residential 1.65 km2 (0.64 sq mi)
Population (2017)
 • Total n/a
Postal district 22
Dwelling units n/a
Projected ultimate n/a

The Western Water Catchment (Chinese: 西部集水区; Malay: Tadahan Air Bagian Barat; Tamil: மேற்கத்திய நீர் நீர்ப்பிடிப்பு) is a planning area located in the West Region of Singapore. The planning area borders Tuas and Tuas 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 was started in 2002 had been extended to Lim Chu Kang Tracks 11 and 13, but it has been unnamed, could be named 'Murai North'.

In future, it will be redeveloped into HDB estate cum forest park/Green Corridor, replacing Pulau Tekong as it is still for military use, but it is not in Land Use Plan 2030. There are many common names in Western Water Catchment, this includes Bajau, Elephant Hill, Pasir Laba, Poyan, Murai, Sungei Gedong, Poyan North, Wrexham and Sarimbun.


There is only one university in the Western Water Catchment which is Nanyang Technological University and National Institute of Education.

Camps and bases[edit]

There are three army camps in the Western Water Catchment. These include Pasir Laba Camp, Chua Chu Kang Camp at Lorong Danau and Sungei Gedong Camp.


The SAFTI Live Firing Area was drawn out in 1967 but there are 504 signboards in the vicinity (the signboards do indicate 'Danger. Live Firing Area-KEEP CLEAR'). On the 14 July 1968, four villagers were killed in SAFTI Live Firing Area, which is very near to Kampong Berih, nine others were injured and seven other villagers sneaked into the Pasir Laba by sampans to pick durians and rambutans. They were injured by mortar rounds.[1] There are many cases of trespassers in the live firing area.[2][3]

Sentries are posted at 11 entrance points at Pasir Laba Camp to keep out trespassers.[4]


As of 2017, this water catchment has a total of 4 reservoirs.

Tengeh Reservoir[edit]

Tengeh Reservoir
Location Western Water Catchment
Coordinates 1°20′45″N 103°38′50″E / 1.34583°N 103.64722°E / 1.34583; 103.64722
Type reservoir
Basin countries Singapore

Tengeh Reservoir (Chinese: 登格蓄水池) was formerly a river, Sungei Tengeh, which emptied into the Straits of Johor and was dammed to become a reservoir in the early 1980s (which is part of 'Western Water Catchment Scheme'). Construction of the reservoir began in 11 March 1977.[5]

Tengeh Reservoir is part of the SAFTI Live Firing Area (South) and has restricted access[6], where possible there are two bridges at the ends of the vicinity. One is for road at the western end called "Wrexham Bridge", which is just a road bridge which connects Jalan Ahmad Ibrahim and Wrexham Drive, next to Tuas Checkpoint and one is for walking at the eastern end next to Pasir Laba Road and Tengeh Pumping Station. The western end of Pasir Laba Road is also located at the Elephant West Hill, where it becomes Wrexham Drive straightaway. The Chinese name of the reservoir sounds similar to the English one.

On 11 April 1991, there was a naked body of woman floating in the reservoir.[7].

The southern side of Tengeh Reservoir is the Raffles Country Club, and the golf areas can see the reservoir clearly. The Raffles Country Club construction began on 29 October 1987. The government of Singapore has made the second large acquisition of land for the project by requiring Raffles Country Club to vacate its plot as the site offers the "most suitable location" to run the HSR tracks after the bridge crossing and to place the tunnel portal leading to the underground tunnels that would take the HSR to the Jurong East terminus. The site has to be vacated by July 31, 2018, to be used for HSR crossover tracks and a siding facility to temporarily house a train near the border for safety or operational reasons.[8]

On 3 November 2011, Public Utilities Board (PUB) and Economic Development Board (EDB), had decided to install floating solar panel at Tengeh Reservoir, which is part of S$11 million project. This is the first solar panel to be at the reservoir/river, and Western Water Catchment (Located at Wrexham Village).[9]

Poyan Reservoir[edit]

Poyan Reservoir
Location Western Water Catchment
Coordinates 1°22′37″N 103°39′50″E / 1.37694°N 103.66389°E / 1.37694; 103.66389
Type reservoir
Basin countries Singapore

Poyan Reservoir (Chinese: 波扬蓄水池; Malay: Tadahan Air Poyan) was previously part of the river Sungei Poyan and its delta, which was dammed to become a reservoir. Sungei Poyan emptied into the Straits of Johor. Construction of the reservoir began in 11 March 1977.[10]

On 27 April 1984, two men were fined for trespassing into the live firing area.[11]. On 14 February 1991, two men were fined $1,000 for fishing in a live firing area off Pasir Laba Road. On 17 August 1991, the two RSAF pilots were killed at Poyan Reservoir.

It is part of SAFTI Live Firing Area (South), which has restricted access[12]. There are two restricted access gates at the end of Old Choa Chu Kang Road for connection to either end of Poyan Reservoir, as the road is quite narrow (is only accessible to pedestrians and all military vehicles), together with the Lorong Danau (between Chua Chu Kang Camp and Jalan Sungei Poyan)[13]. The future training outfield, SAFTI City (formerly Poyan Court) will also be located there.[14]

At the reservoir, only the Mobility 3rd Generation raft is deployed to load and unload military vehicles when crossing from the western side to the eastern side.

Murai Reservoir[edit]

Murai Reservoir
Location Western Water Catchment
Coordinates 1°24′00″N 103°40′25″E / 1.40000°N 103.67361°E / 1.40000; 103.67361
Type reservoir
Basin countries Singapore

Murai Reservoir (Chinese: 慕莱蓄水池; pinyin: Mù lái xù shuǐ chí) was formerly Sungei Murai, which was dammed in early 1980s, to create a reservoir. Construction work had began on November 1977.[15]

It is part of SAFTI Live Firing Area (North), of which is restricted to only from the TRMC Operations Room[16]. The Murai Urban Training Facility is east of Murai Reservoir, which can be accessed through Jalan Murai from Lim Chu Kang Road, together with the Murai Urban Live Firing Facility (MULFF).[17]

There is also a road east of Murai Urban Training Facility which goes from Lim Chu Kang Road to Jalan Murai, called Murai Farmway. Only Murai Farmway and part of Jalan Murai is opened to the public. Murai North has four dirt roads named (with Lim Chu Kang Tracks 11 & 13).

Sarimbun Reservoir[edit]

Sarimbun Reservoir
Location Western Water Catchment
Coordinates 1°25′35″N 103°41′00″E / 1.42639°N 103.68333°E / 1.42639; 103.68333
Type reservoir
Basin countries Singapore

Sarimbun Reservoir (Chinese: 莎琳汶蓄水池) was constructed by damming Sungei Sarimbun and widening of Sungei Karang, Sungei Hantu, and Sungei Sarimbun.[18] Construction work had began on November 1977.[19]

It is part of SAFTI Live Firing Area in the north, which has restricted access and only accessible through the TRMC Operations Room[20]. The public can cut through from Bahtera Track to enter Sarimbun Reservoir area.

Sarimbun was where General Tomoyuki Yamashita landed his troops during World War II, and was engaged in the Battle of Sarimbun Beach. Sarimbun is also home to many small vegetable and fruit farms and health farms. These farms are normally owned by local entrepreneurs. Sarimbun also hosts multiple permanent campsites, especially on Jalan Bahtera. These campsites include the Singapore Scout Association's Sarimbun Campsite, Girl Guides Singapore's Camp Christine, and Ministry of Education's Jalan Bahtera Adventure Centre.


Sarimbun is a Malay place name, and existed probably since the early nineteenth century. The Franklin and Jackson's Plan of Singapore (1830) refers to Sungei Sarimbun, or Sarimbun River in Malay, as "Serimhone".

Rimbun means "luxuriant", "in great quantity" or "thick".

Other place names with Sarimbun include Pulau Sarimbun, a small island in the Straits of Johor off the coast at Sarimbun. Pulau Sarimbun is within the SAFTI Live Firing Area as shown in the map.


There are three islands in the Western Water Catchment - Pulau Bajau, Pulau Pergam and Pulau Sarimbun. Pulau Bajau is a hypsographic island within Poyan Reservoir. It is part of SAFTI live firing area.


Pulau Bajau means Bajau island, in which Bajau is an indigenous ethnic group residing in Sabah, eastern Malaysia, Brunei, Indonesia, the Philippines and parts of Sarawak.