This document summarizes a presentation given by Richard Muller of GWP Central and Eastern Europe on sustainable sanitation in the region. It notes that 30% of the region's population of 152 million lives in small settlements lacking proper sanitation, polluting water sources. A 2011 survey found most use septic tanks or activated sludge systems, but some are adopting natural wastewater treatment. GWP CEE is developing a guidebook and workshops on natural options and a proposed 3-year project would increase awareness, demonstrate pilot plants, and address institutional barriers to wider adoption of sustainable sanitation solutions.