Singapore’s diversified water supply
PUB describes four supply sources: local catchment water, imported water, reclaimed NEWater and desalinated water. Diversification reduces reliance on a single supply pathway.
Each source has different infrastructure, energy and geographical dependencies. Water security also depends on demand and resilience, not simply the number of sources.
Saved on this browser. An example’s listed role does not certify that it covers every specification dimension.
Evidence and its scope
| Claim | Period and scope | Source |
|---|---|---|
| PUB identifies local catchment, imported water, NEWater and desalination as its Four National Taps. | Agency description checked October 2026 | Open source |
Possible requirement roles
- Water supply and securityDefine the supply area and period.; Connect physical availability, demand and infrastructure.; Evaluate financial, energy, ecological and distributional effects.
- Urban growth and changeIdentify the city and its national context.; Connect opportunities and challenges to growth and migration.; A transport project covers only part of a whole-city case.
Recall the evidence
Case-recall questions load here. The sourced evidence remains available below.
Practise using the evidence
Apply a related skill
Percentage change · Source evaluation
Compare with Cape Town’s water-security crisis
Compare supply diversification with demand management during drought. Use the sources to distinguish long-term systems from crisis responses.
Cape Town’s water-security crisis
Check the comparison
Use a shared criterion, explain the geographical process and keep each source’s period and boundary. Different totals may reflect different definitions or populations. A comparison needs more than two separate descriptions.
Related lessons
Water resources: reliable supply and competing uses · Resource security: stocks, conflicts and alternative futures
Build a better answer
Use a fresh resource to practise selecting evidence and explaining its significance.