ADI Limited is a professional services company that provides services in most disciplines of engineering, project management, environmental management and architecture. It delivers innovative and cost-effective solutions to meet client's needs using a registered ISO 9001 quality management system. Bundled or individual services are provided to private, industrial, commercial, institutional and government clients by professionals, scientists, economists and technicians located in offices across Atlantic Canada and New England.

ADI Systems is a technology and design-build company that offers a wide range of wastewater treatment packages to clients around the world. It offers bench and pilot testing and custom designed solutions to provide the best treatment package to suit customer's needs. In addition to generic technologies, ADI Systems offers proprietary and patented technologies in both anaerobic and aerobic biological waste treatment applications and membrane filtration. ADI Systems provides large treatment packages plus modular anaerobic packages for small plant applications.

Geomembrane Technologies Inc. is a leader in providing innovative and reliable tank and lagoon cover systems. It designs, fabricates, and installs complete odour control systems for clients worldwide. Projects include liners, floating and structurally supported covers, and gas handling systems for the agricultural sector, as well as for municipal and industrial wastewater treatment plants. In addition to floating and structurally supported covers, it also offers potable water covers.