This paper discusses a systems approach to the strategic delivery of infrastructure in the regulated UK water sector as part of a participatory-focused research project. Part of an ongoing PhD programme, this paper highlights the value of a strategic approach to the procurement of infrastructure-related services in accordance with the quinquennial water sector reprocurement exercise being undertaken by infrastructure client organisations (ICOs). As a strategic approach is concerned with understanding the delivery environment into which an organisation places, engages and delivers projects, this paper surfaces how a UK-based water and wastewater ICO has engaged with its delivery market, through procurement, to position itself strategically within the wider delivery environment to serve its customers better. Using a systems approach, what is brought to light here is the importance of organisational transitioning through change management and how a delivery strategy can encompass the facilitation of organisational change.