CPV: 45000000 Construction work, 45232410 Sewerage work, 45231100 General construction work for pipelines, 45231110 Pipelaying construction work, 45231300 Construction work for water and sewage pipelines, 45232150 Works related to water-distribution pipelines, 45232430 Water-treatment work, 45252000 Construction works for sewage treatment plants, purification plants and refuse incineration plants, 45252120 Water-treatment plant construction work, 45252127 Wastewater treatment plant construction work, 45255110 Wells construction work, 45262220 Water-well drilling, 45262600 Miscellaneous special-trade construction work, 45310000 Electrical installation work, 45330000 Plumbing and sanitary works, 45453000 Overhaul and refurbishment work

CPV: 44162500 Drinking-water piping, 45111290 Primary works for services, 45112500 Earthmoving work, 45232410 Sewerage work, 45233000 Construction, foundation and surface works for highways, roads, 45233200 Various surface works, 45233293 Installation of street furniture, 45311000 Electrical wiring and fitting work, 45316110 Installation of road lighting equipment

CPV: 45112000 Excavating and earthmoving work, 45200000 Works for complete or part construction and civil engineering work, 45223220 Structural shell work, 45232410 Sewerage work, 45214210 Primary school construction work, 45223500 Reinforced-concrete structures, 45231110 Pipelaying construction work, 45232130 Storm-water piping construction work, 45232411 Foul-water piping construction work, 45232440 Construction work for sewage pipes, 45232450 Drainage construction works, 45232453 Drains construction work, 45232460 Sanitary works, 45261400 Sheeting work, 45261410 Roof insulation work, 45261213 Metal roof-covering work, 45261100 Roof-framing work, 45261320 Guttering work, 45262100 Scaffolding work, 45262210 Foundation work, 45262310 Reinforced-concrete work, 45262320 Screed works, 45262420 Structural steel erection work for structures, 45262522 Masonry work, 45262670 Metalworking, 45310000 Electrical installation work, 45311000 Electrical wiring and fitting work, 45311100 Electrical wiring work, 45311200 Electrical fitting work, 45312100 Fire-alarm system installation work, 45312310 Lightning-protection works, 45312311 Lightning-conductor installation work, 45313100 Lift installation work, 45314000 Installation of telecommunications equipment, 45314200 Installation of telephone lines, 45314300 Installation of cable infrastructure, 45314310 Installation of cable laying, 45314320 Installation of computer cabling, 45315000 Electrical installation work of heating and other electrical building-equipment, 45315100 Electrical engineering installation works, 45315300 Electricity supply installations, 45315600 Low-voltage installation work, 45315700 Switching station installation work, 45316000 Installation work of illumination and signalling systems, 45316100 Installation of outdoor illumination equipment, 45321000 Thermal insulation work, 45323000 Sound insulation work, 45317000 Other electrical installation work, 45324000 Plasterboard works, 45330000 Plumbing and sanitary works, 45331000 Heating, ventilation and air-conditioning installation work, 45343000 Fire-prevention installation works, 45343100 Fireproofing work, 45410000 Plastering work, 45421100 Installation of doors and windows and related components, 45421130 Installation of doors and windows, 45421151 Installation of fitted kitchens, 45421152 Installation of partition walls, 45422000 Carpentry installation work, 45430000 Floor and wall covering work, 45431000 Tiling work, 45442110 Painting work of buildings, 45443000 Facade work

CPV: 45232410 Sewerage work, 45231300 Construction work for water and sewage pipelines, 45232151 Water-main refurbishment construction work, 45232400 Sewer construction work, 45252120 Water-treatment plant construction work, 45252210 Water purification plant construction work