The Introduction to Water, Sanitation, and Hygiene (WASH) in Emergencies module is a stand alone module linked to HOP Fundamentals, an open-access, self-paced catalogue of quality assured and interactive learning modules, curated by partner providers or created by Save the Children. Fundamentals has three levels and is aimed at people beginning their career in the humanitarian sector or for those transitioning from the development sector. It is also aimed at individuals who have never received formal training on the essentials of humanitarian action, or for those wishing to ‘refresh’ their knowledge. Fundamentals has been carefully designed to provide a streamlined learning journey which covers the key topics related to the delivery of quality emergency responses.