CPV: 45000000 Construction work, 45100000 Site preparation work, 45110000 Building demolition and wrecking work and earthmoving work, 45111291 Site-development work, 45200000 Works for complete or part construction and civil engineering work, 45232410 Sewerage work, 45231100 General construction work for pipelines, 45231300 Construction work for water and sewage pipelines, 45231500 Compressed-air pipeline work, 45232152 Pumping station construction work, 45232411 Foul-water piping construction work, 45232421 Sewage treatment works, 45232422 Sludge-treatment works, 45232423 Sewage pumping stations construction work, 45232424 Sewage outfall construction work, 45232451 Drainage and surface works, 45233120 Road construction works, 45252100 Sewage-treatment plant construction work, 45252127 Wastewater treatment plant construction work, 45252130 Sewage plant equipment, 45252140 Sludge-dewatering plant construction work, 45252200 Purification plant equipment, 45300000 Building installation work, 45310000 Electrical installation work, 45330000 Plumbing and sanitary works, 45331000 Heating, ventilation and air-conditioning installation work, 45340000 Fencing, railing and safety equipment installation work, 45400000 Building completion work, 48000000 Software package and information systems, 71000000 Architectural, construction, engineering and inspection services, 71247000 Supervision of building work, 71248000 Supervision of project and documentation, 71320000 Engineering design services, 71354000 Map-making services, 90000000 Sewage, refuse, cleaning and environmental services