construction services, namely, construction of water and energy systems and facilities and water and energy conservation systems and facilities; construction and building project management, planning, consultation and supervision services; installation, repair, and maintenance of water and energy systems and facilities and water and energy conservation systems and facilities; consultation services in the installation and maintenance of water and energy systems and facilities and water and energy conservation systems and facilities; general construction contracting; on-site project management relating to construction, installations and refurbishment, namely, construction supervision; consulting in the field of construction of water and energy systems and facilities and water and energy conservation systems and facilities; project management for building, construction and civil engineering projects, namely, construction supervision; building construction and repair services, namely, partial and complete rehabilitation of water and energy systems and facilities and water and energy conservation systems and facilities; new construction of water and energy systems and facilities and water and energy conservation systems and facilities; provision of information, advisory and consultancy services relating to all the aforesaid services