With support from the Water and Development Partnership Program and IHE, Institute for Water Education, the Sanitation Research Institute at Meru University of Science and Technology, in partnership with Nakuru Water and Sanitation Services Company Ltd, has developed the Nakuru Sanitation Revolution case study. The case highlights how Citywide Inclusive Sanitation (CWIS) has transformed service delivery in Nakuru, positioning the city as a model of innovation, inclusion, and sustainability in Kenya. As one of Kenya’s fastest-growing cities, Nakuru has faced mounting pressure on its sanitation systems due to rapid urbanization, population growth, and expanding informal settlements. Historically, limited sewer coverage, unsafe waste disposal, and environmental degradation posed serious public health and ecological risks. This case study documents how local leadership, development partners, communities, and private sector actors came together to reimagine sanitation, not merely as infrastructure, but as an integrated public service. The Nakuru Sanitation Revolution showcases scalable solutions, including sewer network expansion, strengthened fecal sludge management, and improved access to safely managed sanitation in low-income areas. Central to this transformation is the CWIS approach, which prioritizes equity, service delivery for all residents, and a mix of technical solutions tailored to diverse urban contexts. Beyond infrastructure, the case explores governance reforms, innovative financing, data-driven planning, and public-private collaboration that have enabled sustainable progress. Nakuru’s journey demonstrates that with vision, partnership, and inclusive planning, sanitation transformation is achievable and replicable for rapidly urbanizing cities across the region.