The Water and Sanitation Program (WSP), administered by the World Bank, aims to support poor people in achieving sustainable access to water and sanitation services while mainstreaming gender to address inequality in these sectors. This working paper outlines the importance of incorporating gender perspectives in policy formulation, operational practices, and monitoring to improve outcomes for both men and women. By highlighting good practices and providing checklists, the paper serves as a resource for various stakeholders committed to promoting gender equality in water and sanitation services.