Costain Group PLC has been selected by United Utilities as one of seven partners to deliver its new strategic investment programme. This expands the relationship between the two companies and is expected to see the partners deliver £3bn of projects during the 2025-2030 Asset Management Period 8 (AMP8) period, with the potential for a further five-year extension. Costain will work with United Utilities and its partners to form an integrated enterprise delivery organization to upgrade complex infrastructure and non-infrastructure assets, including water and wastewater treatment sites, pumping stations, and reservoirs. This new contract expands Costain's positions with leading water companies, further solidifying its presence in the industry.