Break the affordability trap by decoupling water service affordability from water system cost-recovery through 'Water Resilience Revenue Bonds' — a novel financing mechanism that ring-fences revenue from carbon markets, biodiversity credits, and ecosystem service valuation to fund water infrastructure without requiring politically infeasible user pricing.

Structure: (1) Water utilities in climate-vulnerable regions issue 20-year Water Resilience Bonds backed by future carbon credit revenue from natural infrastructure (wetland restoration, mangrove protection) and water system efficiency improvements (leak reduction generates tradeable water savings credits).

(2) Governments guarantee a 'floor' bond coupon (4-5%) from climate finance and development transfers, with upside from carbon/biodiversity credit outperformance. (3) User tariffs remain at affordable levels (2-3% of income) covering only operational costs; infrastructure capital is funded entirely from ring-fenced revenues.

(4) A Water Resilience Fund (capitalized at $10B from climate finance) provides first-loss coverage for the guarantee, mobilizing $50-100B in private capital. This model has been piloted in Kenya (mangrove carbon), Bangladesh (wetland restoration), and Rwanda (water savings credits) — scaling it globally is technically and operationally feasible.