On April 15, 2026, during the IMF/World Bank Spring Meetings in Washington, the World Bank Group launched Water Forward, a multilateral coalition that includes the European Investment Bank, the Asian Development Bank, the Inter-American Development Bank, and the Islamic Development Bank. The stated objective: double private capital's share of global water investment from approximately 10% to 20% within the next decade. For practitioners in infrastructure private equity, M&A, and institutional sustainability strategies, this is a watershed moment. After decades in which "water as an asset class" was a sector-conference slogan, this week it became a funded mandate with peer multilateral co-signatories.
Water Forward: the institutional frame takes shape
The numbers behind the initiative speak to the scale of the gap. Annual water spending in developing countries totals approximately $164.6 billion, of which around 91% is publicly funded and less than 2% comes from private investors. Closing the funding gap would require an additional $131-$140 billion every year, nearly tripling current investment levels. The Water Forward platform aims to improve water security for one billion people by 2030 and already secured fourteen national water compacts at launch. These compacts function as country-level frameworks that translate political will into investable pipelines, through explicit commitments on cost-reflective tariffs, regulatory reform, and guarantee mechanisms. The European Investment Bank, joining the coalition, announced a parallel pledge to deliver water security to 300 million people by 2030. The explicit reference model is the one used in energy and transport: deploy concessional capital and de-risking instruments to enable private capital to underwrite water projects at industrial scale.
The largest allocation gap in global infrastructure
The single most strategic statistic in the Water Forward materials is also the simplest. Private capital represents approximately 10% of capex in the water sector, compared with around 50% in transport and energy, and around 90% in digital infrastructure. Put differently: water is the largest asset class globally to which private capital has systematically under-allocated. The historical cause is structural rather than cultural: non-cost-reflective tariffs, fragmented municipal utilities, local political risk, and the absence of replicable contractual standards that would allow an infrastructure fund to underwrite water the way it underwrites toll roads or fibre networks. The implicit message of Water Forward is that each of these constraints is now being tackled at the institutional level. For sector practitioners, this is not a marketing target — it is the precondition for moving water allocation from an impact-investing niche into mainstream infrastructure. The trajectory that took digital from 30% to 90% in twenty years, and renewables from 10% to 70% in ten, is the reference template.
Three concrete tailwinds for infrastructure operators
The most operational part of Water Forward is the set of mechanisms that make it financeable. Three channels are already visible. First: de-risking instruments — multilateral guarantees, blended finance, and credit enhancement — designed to bring water projects above the investment-grade threshold required by infrastructure funds and insurance companies. Second: national water compacts that act as investable country plans, reducing local political risk and creating multi-year pipelines of standardised projects. Third: tariff reform, long the missing piece. Cost-reflective tariffs are the contractual condition that allows water DCFs to be underwritten with the same discipline applied to regulated energy. In parallel, the European Investment Bank has published Phase 2 of its Climate Bank Roadmap, committing €30 billion to climate adaptation financing through 2030 — double the previous five-year envelope — with water named as a priority sector. April 2026 alone has produced three signature deals: €200 million to Linz to integrate energy, water and wastewater into a single system; €470 million to Stockholm for wastewater treatment and Baltic Sea protection; and €500 million to Germany for flood protection. These are volumes and structures that change portfolio mathematics.
What this means for the European mid-market
For the European mid-market, and the Italian one in particular, three observations. First: the integrated multi-utility model — energy, water, wastewater on a single balance sheet — that Italian operators like Hera, A2A and Iren have built over twenty years is exactly the template that Water Forward and the EIB are now signalling as replicable. Italian platforms hold a structural operational advantage that, until now, was not fully priced into European comparables. Second: the combination of NIS2, the EU Water Framework Directive revision, and the EU Climate Adaptation Plan is building a clear regulatory perimeter through end-2026. For funds selecting Italian infrastructure assets, regulatory predictability is a direct valuation input. Third: pricing discipline on European lead deals is recalibrating — the Telepass case is the most visible evidence — which means M&A deployment in water needs to be carefully sequenced. The point is not to chase the theme but to build the operational capabilities — engineering know-how on PFAS and reuse, asset-management platforms, OT cybersecurity expertise — that will win in a structurally growing market. For those approaching water from the European private-capital perspective, the message is clear: the setup for the next decade is being built now.
Water has entered the institutional mainstream
Water Forward is not an isolated policy event. It is the convergence of structural capex growth (US municipal water capex will cross $100 billion per year by 2030), of a finally-coordinated European regulatory perimeter, and of a multilateral framework that gives private managers the contractual tools to allocate at scale. For infrastructure operators, sustainability strategists, and the European mid-market, the question is no longer whether water is investable — the World Bank has just answered that question. The question is which balance sheets, which capabilities, and which partnerships will absorb the capital that is now arriving. At Arenes Partners, we are building our conviction on the water sector, and we are taking the time needed to do it well.