世界银行-为水安全的未来提供资金：对全球公共支出的评估（英）-2024-378页_13mb

报告摘要

Summary of "Funding a Water-Secure Future: An Assessment of Global Public Spending"

Core Content

This report, Funding a Water-Secure Future: An Assessment of Global Public Spending, provides an in-depth analysis of global public spending on water-related infrastructure and services. It is authored by a team from the World Bank's Water Global Practice and supported by the Global Water Security & Sanitation Partnership (GWSP), which includes contributions from multiple international donors and agencies. The study aims to understand the current state of public spending in the water sector, identify gaps, and offer recommendations to improve funding and efficiency.

Main Findings

Global Public Spending on Water: The report estimates global public spending on water infrastructure and services, highlighting that the water sector is underfunded compared to its needs.
Infrastructure Gaps: Significant spending gaps exist to achieve Sustainable Development Goals (SDGs) 6.1 and 6.2 (safe water and sanitation access) and SDG 2 (irrigation for food security).
Spending Trends: Public spending on water is unevenly distributed across regions and income levels, with low-income countries (LICs) and middle-income countries (MICs) accounting for a large share of total spending.
Efficiency and Productivity: There is a notable inefficiency in water sector spending, with some utilities showing significant cost and technical inefficiencies. Productivity and efficiency are measured using indices such as the Malmquist Productivity Index and Stochastic Frontier Analysis.
Budget Execution: Budget execution rates in the water sector are generally lower than in other sectors, influenced by governance, institutional capacity, and policy implementation.
Role of Government: Governments play a critical role in the water sector due to its public goods nature, monopoly characteristics, and common-pool resource challenges.
Private Sector and PPPs: While the private sector and public-private partnerships (PPPs) are emerging as important funding sources, their performance and potential remain underexplored and require further development.

Key Information

Part 1: Statecraft - The Role of Government in Water

Governments are essential in the water sector due to its unique features such as merit goods, positive externalities, and networked service provision.
The report emphasizes the need for an integrated perspective on water sector management, covering water supply, sanitation, hygiene, irrigation, and hydropower.
Public investment is crucial for sustainable development, and the report discusses the importance of government-led initiatives to ensure equitable access and long-term planning.

Part 2: Money Matters - What Is Spent and What Is Needed

Estimating Spending: The report presents four methods to estimate global infrastructure spending, with varying results showing a range from $588.8 billion to $2.2 trillion annually.
Spending Gaps: Significant gaps remain to achieve universal access to water, sanitation, and hygiene (WASH) services and to meet SDG targets by 2030.
Water and Sanitation (WSS): Spending on WSS is much lower than required, especially in low-income countries, where the gap is more pronounced.
Irrigation: The report highlights the importance of irrigation for food security and estimates the capital and recurrent expenditure needs across different scenarios and regions.

Part 3: Liquid Ledger - Dissecting the Anatomy of Water Spending

Sources of Funding: Public sector spending includes contributions from official development assistance (ODA), domestic and foreign funding, and various entities such as state-owned enterprises (SOEs) and private sector actors.
Efficiency and Productivity: The study measures the productivity and efficiency of water utilities using the Malmquist Index and Stochastic Frontier Analysis, revealing inefficiencies in many countries.
Subsidies and Inequities: Subsidies in the water sector are unevenly distributed, with some populations benefiting more than others, leading to persistent inequities in access.
Budget Execution: Budget execution rates in the water sector are influenced by governance, regulation, and institutional capacity. Countries with higher governance scores tend to have better execution rates.

Part 4: Progress Not Perfection - Recommendations for Enhancing the Flow of Funds into Water

Recommendations: The report offers several recommendations to improve public spending in the water sector, including:
- Enhancing utilization and efficiency of public spending.
- Reforming public financial management and investment management.
- Developing a realistic performance metric for public entities and SOEs.
- Catalyzing long-term financing through credible regulatory systems.
- Improving cost recovery and demand management.
- Strengthening state capacity and human resources.
- Enhancing data access, transparency, and communication.
Challenges: The report acknowledges challenges such as low capital and maintenance spending, the risk-return profile of the water sector, and the limitations of current methodologies.

Conclusion

The report underscores the critical role of public spending in achieving water security and sustainable development. It identifies key gaps in funding and efficiency, and provides actionable recommendations to improve the flow and effectiveness of public investment in the water sector. The study also highlights the importance of government leadership, integrated planning, and better data and governance to address these challenges.

Key Figures and Data

Global Spending Estimates: Ranges from $588.8 billion to $2.2 trillion annually, with LICs and MICs contributing the majority.
Spending Gaps: Estimated annual gaps to achieve SDG 6.1 and 6.2 range from $158 billion to $232 billion, depending on the methodology and region.
Efficiency Losses: The monetary value of average efficiency loss in water utilities is significant, often exceeding 20% of operating costs.
Execution Rates: Vary widely across countries and regions, with some countries achieving high rates while others lag behind.

Methodological Notes

The report uses multiple datasets and statistical models to estimate spending and efficiency, including panel regressions, Malmquist productivity index, and stochastic frontier analysis.
It acknowledges the limitations of current methodologies, including data gaps and the need for more accurate measurement tools.

Appendices and Boxes

Appendices provide detailed methodologies and data sources for estimating spending and efficiency.
Boxes highlight case studies and historical insights, such as the role of subsidies and the impact of infrastructure investment on development outcomes.