Abstract Partnerships like the delegated management model ( DMM ), in which a utility delegates management of infrastructure and service delivery to slum residents, are being promoted to improve services to the urban slums in sub‐Saharan Africa. However, there is little empirical evidence of the benefits that DMM offers beneficiaries and its potential limitations. This study, conducted in 2013, compared water service in two slums in the city of Kisumu in Kenya where DMM has been implemented with another where it has not been implemented. Results showed that DMM had lowered the cost of water compared to water kiosks in neighbourhoods in which DMM had not been implemented. The study findings contribute toward an evidence base for stakeholders and regulators who see an opportunity in the integration of DMM into local drinking water provision solutions in urban slums.