USAID’s West Africa Municipal Water, Sanitation, and Hygiene (MuniWASH) activity facilitated a self-assessment of 93 private sanitation service providers in March 2022, largely composed of micro, small and medium enterprises (MSMEs), operating in the 16 municipalities. The two principal types of MSMEs include providers of sanitation products, largely manufacturing and construction companies, and providers of sanitation services, or sludge-emptying companies. The Enterprise Capacity Building Tool (ECBT) was used to assess the performance of service providers in the functional areas of 1) administration; 2) human resources management; 3) production and services; 4) supply, inventory management, and logistics; 5) marketing; and 6) accounting and financial management. The results of the self-evaluations showed that the sanitation MSMEs had significant gaps to fill in the identified functional areas.