This new WHO toolkit looks like an important resource:

WASH and health working together: A ‘how-to’ guide for Neglected Tropical Disease programmes . World Health Organization, Neglected Tropical Disease NGO Network (NNN), January 2019.

This toolkit provides step-by-step guidance to NTD program managers and partners on how to engage and work collaboratively with the WASH community to improve delivery of water, sanitation and hygiene services to underserved population affected by many neglected tropical diseases.

The toolkit is based on real-life program experience, which users can match to their needs and local context. It includes a series of tools to help build multisectoral partnerships, mobilize resources, and design, implement and evaluate interventions.