The International Organization for Standardization (ISO) has published International Workshop Agreement (IWA-24) Non-sewered sanitation systems–General safety and performance requirements for design and testing. Based on ground-breaking work by TÜV SÜD, it was funded by a grant from the Bill & Melinda Gates Foundation. The American National Standards Institute (ANSI) served as the IWA secretariat. The IWA will pave the way for innovative, decentralized sanitation technologies in developing countries.