In addition to the panels, the Institution has three established specialist interest groups. The objectives of the groups are to provide a national forum and network for members within the Institution for addressing issues relating to their respective specialist subject areas. The group committees determine their activities within institution policy and deliver programmes of events and site visits and assist the technical committee, its panels and branches with their work.
Groups are multi-disciplinary and membership is open to all members of the institution.
Each group is represented on the technical committee. The groups each have a section in the website. The Chartered Institution of Water and Environmental Management Limited.