This guidance provides practical recommendations for effective collaboration in all types of partnerships. It shares experiences of the drivers, benefits and challenges of partnerships, as well as useful case studies and links to further resources. It particularly looks at WASH partnerships involving women’s organisations, OPDs and SGM organisations; a focus of Water for Women. It is designed to support organisations looking to begin, build or strengthen partnerships as a way to achieve mutually beneficial outcomes, especially in terms of making WASH programs more sustainable, inclusive and supportive of gender and social norms transformation in WASH systems, and society at large.