Water Utility of the Future: Singapore’s Public Utilities Board

Name: Water Utility of the Future: PUB, Singapore's National Water Agency
SKU: OFW-WUTF-PUB-SGP-2026

$499.00

Water Utility of the Future: PUB, Singapore's National Water Agency | Our Future Water Intelligence

Water Utility of the Future Series

Water Utility of the Future: PUB, Singapore's National Water Agency

PUB, Singapore's National Water Agency is executing a generation-scale infrastructure and institutional transformation — SGD 6.5 billion of deep tunnel sewerage, SGD 1.125 billion in green bonds, and a 2061 supply independence target — that constitutes the most complete circular water economy programme of any city-state in the world.

Summary Insight: PUB, Singapore's National Water Agency operates as a statutory board managing the full urban water cycle. Transformation is being delivered through Deep Tunnel Sewerage System Phase 2, Tuas Nexus, smart metering, and mandatory industrial recycling requirements. This is demonstrated by SGD 6.5 billion in deep tunnel infrastructure, SGD 1.125 billion in green bonds, 300,000 smart metres, and a target for NEWater and desalination to provide 85% of supply by 2061. This supports long-term supply independence and financial resilience.

This report is a premium, downloadable strategic intelligence briefing analysing how PUB, Singapore's National Water Agency operates as a system operator, with frameworks, governance models, and investment logic applicable to advanced water utilities globally.

Target Audience

Utility Executives & System Operators: Understand how Deep Tunnel Sewerage System Phase 2 strengthens long-term water security.
Regulators & Policymakers: Examine how the Four National Taps strategy supports long-term supply independence.
Infrastructure Investors & Financiers: Assess how SGD 1.125 billion in green bonds supports infrastructure financing.

Report Deliverables

Governance Structure Review: Provides analysis of combined regulatory and operational authority across the full water cycle.
Digital Operations Assessment: Delivers insight into smart metering, predictive maintenance, and network-wide monitoring systems.
Capital Financing Framework: Enables evaluation of reserve growth, green bond issuance, and long-term infrastructure funding.
Climate Resilience Priorities: Provides assessment of coastal protection, flood management, and sea-level rise planning.
Demand Management Frameworks: Delivers frameworks for industrial recycling, tariff design, and household water efficiency.

The Five Strategic Pillars

Architectures: Unitary mandate, circular water loop

PUB's statutory authority over the complete water cycle — supply, treatment, distribution, collection, and reclamation — eliminates the inter-agency coordination failures that fragment water governance elsewhere. The Deep Tunnel Sewerage System Phase 2 and Tuas Nexus facility represent the physical completion of the circular water loop at national scale.
Enablement: SGD 6.5 billion infrastructure delivery

The Deep Tunnel Sewerage System Phase 2, Tuas Nexus, Long Island coastal reclamation, and green bond-funded treatment infrastructure constitute a multi-cycle capital programme sized for 40 years of supply independence delivery. Capital reserves of SGD 5.3 billion and a dedicated Coastal and Flood Protection Fund anchor the financial architecture.
Resolution: 5% non-revenue water through data-driven management

The Integrated Operations Control Centre, 300,000 smart metres, artificial intelligence-driven predictive maintenance, and a nine-domain research and development programme operating through university partnerships create an operational intelligence system that sustains exceptional network performance across a mature, large-scale distribution asset base.
Alignment: Planning to the extreme, not the median

Infrastructure designed against 4–5 metre sea-level rise scenarios, a 100-year coastal protection programme exceeding SGD 100 billion, the Long Island dual-purpose coastal and reservoir project, and the Active, Beautiful, Clean Waters programme constitute the most comprehensive national-scale climate adaptation architecture in the urban water sector.
Capability Building: Combined authority, generation-scale strategy

The combined regulatory and operational mandate under the Public Utilities Act, the 2061 supply independence horizon, mandatory industrial recycling requirements from January 2024, and Singapore International Water Week as a global governance platform position PUB as a governance model studied by water sectors globally.

Operational Excellence & Resilience

PUB, Singapore's National Water Agency operates an integrated water network supported by the Integrated Operations Control Centre and real-time monitoring across supply, sewer, and drainage systems. Performance is achieved through smart metering, predictive maintenance, and centralised control of network assets. This is further supported by a nine-domain research and development programme and partnerships with leading universities.

Key performance is reflected in a non-revenue water rate of approximately 5% across a major urban network. This is reinforced by 300,000 smart metres delivering water savings of 15–17% in pilot areas.

About the Author

Robert C. Brears

Founder, Our Future Water Intelligence

Robert C. Brears is a globally recognised expert in water security, circular economy, and urban resilience. He is the author of multiple books on water management published by Oxford University Press, Palgrave Macmillan, and Springer Nature, and advises governments, utilities, and international organisations on strategic water investment and climate adaptation. His intelligence reports are used by utility executives, regulators, and infrastructure investors across Europe, Australasia, and the MENA region to benchmark performance and de-risk capital decisions.

Report Standards

Official utility & regulator data only No independent modelling or forecasting System-level analysis framework Benchmarkable across global utilities Cited by executives & policymakers

Expert Briefing: FAQs

How is PUB's infrastructure programme funded?

PUB's infrastructure programme is funded through reserves, tariff revenue, green bonds, and dedicated climate funds. This is supported by capital reserves of SGD 5.3 billion and green bond issuance totalling SGD 1.125 billion. This is delivered through the PUB Green Financing Framework and the Coastal and Flood Protection Fund.

What is the scale of PUB's infrastructure transformation?

PUB is executing one of the largest water infrastructure programmes in Southeast Asia. This is supported by a 98-kilometre tunnel network costing SGD 6.5 billion and commissioning from 2027. This is delivered through Deep Tunnel Sewerage System Phase 2, Tuas Nexus, and Long Island.

How advanced is PUB's digital transformation?

PUB's digital transformation is focused on operational performance and system control. This is supported by 300,000 smart metres and a non-revenue water rate of approximately 5%. This is delivered through the Integrated Operations Control Centre, predictive maintenance, and the SINGwater innovation platform.

How is PUB approaching decarbonisation?

PUB is linking carbon reduction directly to operational efficiency and resource recovery. This is supported by SGD 684.6 million in green bond proceeds directed to Tuas treatment assets. This is delivered through Tuas Nexus and energy self-sufficiency from biogas-to-energy conversion.