The document summarizes the Technology Assessment Framework (TAF), a decision-making tool developed by the WASHTech Project to assess the applicability and sustainability of specific WASH technologies in different contexts. The TAF gathers perspectives from users, regulators, and providers through field surveys and workshops to evaluate a technology's potential, readiness for scale-up, and impact. It has been successfully piloted in several countries to rate technologies and support monitoring and evaluation of introductions. Stakeholders see value in the participatory process and tools to help select appropriate technologies for sustainable water and sanitation services.