CAPE TOWN – As African leaders gather in Cape Town for the African Water Investment Summitthere can be no equivocation: the world faces an unprecedented water crisis that demands a paradigm shift in how we value and govern our most precious resource.
Growing risks to the water supplies and hydrological cycles that sustain human civilization call for a new economic framework. In the remaining months of its G20 presidency, South Africa can provide the global leadership that this crisis urgently demands.
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A New Economics of Water for an Increasingly Urgent Hydrological Crisis
The world is facing a hydrological crisis of unprecedented scale and complexity.From devastating droughts and floods to dwindling groundwater supplies and widespread water pollution, the signs are everywhere. This crisis is not merely an environmental issue; it is fundamentally linked to economic stability, social equity, and the achievement of the Enduring Development Goals (SDG), from food security and health to economic growth.
Yet too ofen, water investments follow the failed playbook of climate and development finance. There is a tendency to derisk private capital without ensuring public returns; to fund projects without strategic direction; and to treat water as a technical problem,rather than a systemic challenge. Such approaches risk creating water infrastructure that serves investors more than communities, exacerbates existing inequalities, and fails to address the interconnected nature of the water, climate, and biodiversity crises.
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africa’s Opportunity: Securing Water as a Global Common Good
Africa stands at a pivotal moment, uniquely positioned to lead a global transformation in water security. By leveraging its vast, largely untapped groundwater resources and the falling costs of solar power, the continent can revolutionize agriculture, build climate resilience, and foster sustainable growth. This requires a shift in outlook – from treating water as a local resource to governing it as a global common good – and a new approach to financing water infrastructure.
The Potential of Groundwater and Solar Power
Currently, approximately 255 million urban inhabitants in Africa live above known groundwater supplies.This presents a important opportunity, particularly when combined with the increasing affordability and accessibility of solar energy. Decentralized, solar-powered groundwater pumping offers a stable alternative to large-scale infrastructure projects that can disrupt natural water flows and carry considerable environmental costs. Focusing on water efficiency, reuse, and robust capacity building, data-sharing, and monitoring & evaluation will be crucial for sustainable management.
Development banks can play a key role by providing “patient capital” – long-term financing with flexible repayment terms – for these projects. Crucially,this funding should be contingent on private partners reinvesting profits into watershed protection and sustainable water management practices. Collaborative frameworks, termed “just Water Partnerships,” can pool these solar-groundwater projects, increasing their bankability and ensuring community ownership. This model allows for international finance to be channeled towards water infrastructure that concurrently supports national development goals and contributes to the global common good.
South Africa’s G20 Presidency: A Platform for Change
South Africa’s 2025 G20 presidency – the first for an African nation – provides a historic opportunity to advance this agenda on a global scale. Drawing inspiration from Brazil’s use of its G20 leadership and COP30 hosting role to prioritize climate action,South Africa can place water security at the center of the global economic discussion. With the 2026 UN Water Conference approaching, and growing international recognition that addressing the water crisis is integral to tackling climate change, the timing is ideal for bold leadership. The UN has repeatedly emphasized the interconnectedness of water and climate, highlighting the need for integrated solutions.
The upcoming African Water Investment Summit is a critical moment. It must mark a turning point, shifting the focus from reactive crisis management to proactive market shaping. Mission-oriented investment in water infrastructure should be viewed not as a cost,but as a foundational element of sustainable growth.
Investing in Africa’s Future
Water security is fundamental to Africa’s aspirations for improved health, climate resilience, economic prosperity, and lasting peace. With projections indicating that young Africans will comprise 42% of the global youth population by 2030, investing in water is, in essence, investing in the future of the world. The question is not whether we can afford to act, but whether we can afford the consequences of inaction.