News Costain and MWH Treatment joint venture CMDP awarded £65m of clean water projects by Southern Water by louise davey June 27, 2024 June 27, 2024 CMDP, a joint venture between Costain and MWH Treatment, has been awarded a number of multi-million-pound contracts with Southern Water as part of the water company’s AMP7 investment programme. The … 0 FacebookTwitterPinterestEmail