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Executive overview
Why this report matters
Summary Insight: PUB operates as an integrated national water authority responsible for supply, used water, drainage, flood management, and coastal resilience. Portfolio transformation is being delivered through source diversification, reclamation expansion, desalination, deep-tunnel conveyance, digital operations, and demand reduction. This architecture reduces exposure to imported supply, rainfall variability, drought, energy costs, and climate-related disruption while strengthening long-term water independence.
This Our Future Water Intelligence report provides an independent assessment of PUB’s supply portfolio, dependency risks, infrastructure strategy, financing model, climate resilience, and demand-management framework.
Deep Tunnel Sewerage System Phase 2 is the hydraulic prerequisite for NEWater production at long-term design capacity, linking western industrial zones to the Tuas Water Reclamation Plant through a 98 kilometre transfer network.
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Buyer relevance
Who the report is for
- Utility Executives & System Operators: Understand how deep-tunnel conveyance and reclamation infrastructure strengthen reuse capacity and supply security.
- Regulators & Policymakers: Examine how imported-water dependency shapes national supply planning and climate-independent capacity.
- Infrastructure Investors & Financiers: Assess how public funding, utility reserves, tariffs, and green finance support portfolio diversification.
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Decision scope
Questions answered
How is Singapore’s supply-diversification programme financed?
The programme combines tariff revenue, utility reserves, green financing, and dedicated public climate funds. This approach supports long-term infrastructure while linking eligible investment to supply security, resource efficiency, and resilience.
What drives the shift toward NEWater and desalination?
The shift is driven by imported-water dependency, rising demand, rainfall variability, drought risk, and the need for greater national supply control. Reclamation and desalination provide climate-independent capacity within the wider portfolio.
How does PUB maintain low distribution losses?
PUB combines hydraulic modelling, smart metering, pressure management, predictive maintenance, burst detection, and centralised operational oversight. These capabilities support rapid intervention and disciplined network management.
How does Singapore manage the energy exposure of its supply portfolio?
Singapore balances desalination with lower-energy reclaimed water, demand reduction, industrial recycling, efficient pumping, energy recovery, and research into improved treatment technologies.
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Inside the report
Analytical coverage
Architectures: Diversified National Supply Portfolio
Local catchments, imported water, NEWater, and desalination create a diversified architecture that limits dependence on any single water source.
Enablement: Supply-Independence Pathway
Long-term expansion of reclaimed water and desalination reduces exposure to imported supply while strengthening the capacity to meet future demand.
Resolution: Climate-Independent Supply Hedge
NEWater and desalination provide supply options that are less dependent on rainfall, creating a strategic hedge against drought and catchment volatility.
Alignment: Demand-Side Portfolio Augmentation
Industrial recycling, appliance standards, customer efficiency, tariff signals, and smart metering reduce the volume required from the public supply network.
Capability Building: Multi-Instrument Supply Financing
Tariff revenue, capital reserves, green finance, and dedicated climate funds provide financial continuity for long-term supply diversification.
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Included
What you receive
Complete digital report
The full analysis in a professionally formatted PDF.
Decision-focused analysis
Evidence interpreted around the report’s central strategic and operational questions.
Supporting evidence
Relevant data, documented developments and source material used throughout the assessment.
Analytical frameworks
Structured interpretation of the financial, operational, governance, resilience or resource issues relevant to the report.
Forward priorities
Key developments, risks and issues to monitor following publication.
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Evidence & method
Built for defensible decisions
The report is grounded in documented public, institutional, regulatory, utility and sector evidence appropriate to its stated scope. Source periods, definitions and reported claims are retained within the complete analysis.
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Lead analyst
Robert C. Brears
Lead Analyst, Our Future Water Intelligence
Robert C. Brears is a water-security specialist and author whose work examines utility transformation, infrastructure, governance, finance and climate resilience for executive and policy audiences.
- Evidence-led water intelligence
- Decision-focused system analysis
- Report-specific treatment of scope and terminology
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Water Supply Portfolio and Dependency: PUB, Singapore's National Water Agency
- Format
- Digital report · PDF
- Length
- 13 pages
- Edition
- 2026
- Price
- USD 499
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Report details
Publication details
- Publisher
- Our Future Water Intelligence
- Report family
- Water Utility Intelligence Report
- Report type
- Water Supply Portfolio and Dependency
- Edition
- 2026
- Format
- Digital report · PDF
- Length
- 13 pages
- Reference
- WATER-SUPPLY-PORTFOLIO-PUB-SINGAPORE