WJ Groundwater has recently completed work on a tunnelling project to install a ‘Combined Sewer Overflow (CSO)’ to counteract ‘Unsatisfactory Intermittent Discharge of Storm Water (UIDs)’. Neil Coulter (Contracts Manager) project managed the installation of our dewatering technologies for a number of the deep structures at United Utilities at Eccles, Manchester. Our involvement in the installation began in March and concluded at the end of September.