The project excavates Hanwell's lost water treatment customs and revives the community's deep-rooted connection to the Grand Junction Canal. The concept of 'filtration' represents the town's historical reliance on canal water for making a living and growing society with local engagement. The Slope is an open community space that connects with the council planning department, aiming to make the planning and decision-making processes more accessible and affordable to the public.

Through openings along the filtration waterway, diverse communications are facilitated, amplifying the voices of the local community and empowering democratic authority. The Slope serves as the starting point for the new 3C (Canal, Civic & Community) Initiative, which recognises the British canal network as an opportunity for community-led governance and revitalised cultural exchange across generations.