Within the EU 20/20 program and national strategic objectives, there is recognition for a need to transition to a resource efficient and regenerative circular economy. Within this, water is seen as a significant enabling factor. While major urban managed water systems have seen much improvement to performance, small to medium supplies still require optimisation. The challenges require a balancing of investment, chemical usage, and energy demand that meets expectations of improved water quality and availability. The identification of suitable innovations that deliver value over a range of operating conditions when applied to medium/small managed private drinking water systems will help achieve this ambition. This project aims to survey the technology landscape (national and international) and develop a rational for assessing the technology across a range of operational scenarios predominantly in managed private drinking water systems.