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St John Day


Water Supply and Water Resources Management Consultant
Singe Day.png
Professional info


St John has worked extensively on water resources management, water supply and sanitation programmes in both humanitarian and development contexts. For more than fourteen years he has worked extensively overseas most recently in West and East Africa. He has supervised multiple programmes and has acted as an advisor to numerous NGOs, UN agencies and Governments, on programmes ranging from the West African Ebola outbreak in Sierra Leone to post emergency planning in Ethiopia, Uganda and South Sudan. He has written a number of articles on subjects ranging from citizen science to the management of river basins in fragile states. In addition he has organised and presented WASH related lectures – in particular at the Institution of Civil Engineers and Stockholm World Water Week. 


He has a long history of working in rural and urban contexts that includes major engineering projects, flood alleviation, climate resilience and supporting water utility reform. In the course of his career St John worked on the Heathrow Terminal 5 Twin Rivers Diversion that won a CEEQUAL Excellence Award. In addition he is a member of the Infrastructure and Cities for Economic Development (ICED) facility that provides technical support to DFID.


St John holds a BEng (Hons) Degree (Civil Engineering) from the University of Hertfordshire and a MSc (Water Management) and PhD (Water Resources Management) from Cranfield University. He is a Chartered Engineer and Chartered Water and Environmental Manager (MCIWEM). Prior to University he served in the 2nd Battalion, Parachute Regiment. 


Country experience









North Sudan



Sierra Leone

South Sudan

Sri Lanka




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