Wavin has launched a competition to win 200 AquaCell modular stormwater management units, plus a £10,000 cheque towards groundworks, installation and complementary systems. The winning project will be showcased at Ecobuild 2015, scheduled to take place from 3rd to 5th March 2015, ExCeL London, where Wavin is sponsoring the water seminar theatre in the south hall.