A Water and Sanitation Safety Plan (WSSP) is an efficient methodology to manage drinking water and sanitation safely and is based on the Water Safety Plan and Sanitation Safety Plan approach by WHO. This WSSP Compendium aims to enable communities to develop a WSSP for small-scale water supplies, e.g. dug wells, boreholes, springs and piped centralised water supply systems, and as well as to assess the quality of sanitation facilities such as school toilets.