Central Water Catchment, Singapore

The Central Water Catchment Planning Area (Simplified Chinese: 中央集水区, Traditional Chinese: 中央集水區, Pinyin: Zhōngyāng Jíshuǐ Qū, Malay: Kawasan Tadahan Air Tengah, Tamil: மத்திய நீர்ப்பிடிப்பு பகுதி) is one of the largest planning areas in Singapore. Covering approximately 37.1 square kilometres, it is largely uninhabited and forms the island’s main ecological and hydrological heartland. The area is home to four major reservoirs, extensive nature reserves, and some of the richest biodiversity in the region. Unlike most planning areas, it does not have a permanent resident population, but it is frequently visited for recreation, research, and nature appreciation.

History of Central Water Catchment

The Central Water Catchment was established as a planning area to consolidate Singapore’s core water catchment zones and protected forests. Its history is closely tied to Singapore’s water supply strategy. The first reservoirs — MacRitchie, Seletar, and Peirce — were constructed in the late 19th and early 20th centuries. Over the years, additional reservoirs such as Upper Seletar and Upper Peirce were added. The area’s forests were retained as water catchments, helping to safeguard clean water supplies for the growing population1.

Name and Pronunciation

“Central Water Catchment” is pronounced in the International Phonetic Alphabet (IPA) as /ˈsɛntrəl ˈwɔːtər ˈkætʃmənt/. The term refers directly to the protected forested area in the centre of the island that functions as Singapore’s largest rainwater catchment.

Geography and Boundaries

Located in the geographic centre of Singapore, the Central Water Catchment is bordered by Woodlands and Sembawang to the north, Ang Mo Kio and Bishan to the east, Bukit Timah to the south, and Bukit Panjang to the west. The planning area’s boundaries coincide with the dense central forests that form the largest continuous stretch of greenery on the island.

Reservoirs and Water Supply

The Central Water Catchment is home to four key reservoirs that collectively contribute to Singapore’s water self-sufficiency:

These reservoirs are not only crucial for water storage but also form popular recreational spots for hiking, kayaking, and birdwatching.

Nature Reserves and Attractions

The Central Water Catchment is synonymous with some of Singapore’s most important natural habitats. Notable attractions include:

  1. Singapore Zoo, Night Safari, and River Wonders: World-class zoological institutions located within the catchment area.
  2. MacRitchie Reservoir Park: Famous for its treetop walk and hiking trails.
  3. Upper Peirce and Lower Peirce Reservoir Parks: Popular for tranquil walks and picnics.
  4. Central Catchment Nature Reserve: Home to rare flora and fauna, including native primates such as the long-tailed macaque and endangered species like the Raffles’ banded langur.
  5. TreeTop Walk: A 250-metre suspension bridge offering panoramic views of the forest canopy.

Transport and Accessibility

As a protected area, the Central Water Catchment does not have major roads running through its core. However, it is accessible via surrounding expressways and roads such as the Central Expressway (CTE), Bukit Timah Expressway (BKE), and Seletar Expressway (SLE). Public access is typically through park entrances and zoological attractions located along Mandai Lake Road and Lornie Road.

Residential Real Estate

The Central Water Catchment has no permanent residential developments, given its status as a water supply and biodiversity conservation zone. However, its surroundings — such as Bukit Timah, Bishan, and Ang Mo Kio — feature some of Singapore’s most desirable housing estates. Property values in neighbouring areas benefit from their proximity to the vast greenery and parks within the catchment.

Fun Facts

One of the lesser-known facts is that the Central Water Catchment is so ecologically rich that it supports more than 840 species of flowering plants and over 500 species of animals2. It also forms a key section of the island-wide Park Connector Network (PCN), allowing cyclists and hikers to traverse large portions of Singapore through green corridors.

Map of Central Water Catchment, Singapore

Sights in the Central Water Catchment Planning Area, Singapore

  1. Night Safari (GPS: 1.40218, 103.78806)

Quick Facts

References

  1. PUB Singapore – Local Catchment Water
  2. National Parks Board – Central Catchment Nature Reserve

Page Details

This page was created on 7 September 2025. Hi, my name is Timothy and created it from my research, for my own entertainment, knowledge and to satisfy my curiosity. I am providing the information to you in good faith and hope it is useful. I try to get the details as accurate as possible. I also try to update the page whenever I stumble on new details. So this and all my other pages are perpetual work in progress. If you discover any error, please politely inform me, pointing out where the error lies, and I will correct it as soon as possible. Your helpfulness will keep this page accurate, relevant and helpful to those who need the information.

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