CPV: 38810000 Industrial process control equipment, 42996000 Machinery for the treatment of sewage, 42996110 Macerators for the treatment of sewage, 45252200 Purification plant equipment, 45252210 Water purification plant construction work, 45317000 Other electrical installation work, 45350000 Mechanical installations, 71321000 Engineering design services for mechanical and electrical installations for buildings, 90420000 Sewage treatment services

CPV: 42912330 Water-purifying apparatus, 45252210 Water purification plant construction work, 71320000 Engineering design services

CPV: 39370000 Water installations, 41110000 Drinking water, 42912330 Water-purifying apparatus, 42912310 Water filtration apparatus, 44162500 Drinking-water piping, 45231110 Pipelaying construction work, 45231111 Pipeline lifting and relaying, 45232430 Water-treatment work, 45252126 Drinking-water treatment plant construction work, 45252127 Wastewater treatment plant construction work, 45252210 Water purification plant construction work, 45330000 Plumbing and sanitary works, 50000000 Repair and maintenance services, 50514300 Sleeving repair services, 50700000 Repair and maintenance services of building installations, 71321300 Plumbing consultancy services, 76480000 Tubing services, 76600000 Pipeline-inspection services, 90400000 Sewage services, 90450000 Treatment services of septic tanks

CPV: 45000000 Construction work, 31000000 Electrical machinery, apparatus, equipment and consumables; lighting, 31154000 Uninterruptible power supplies, 31500000 Lighting equipment and electric lamps, 31527200 Exterior lights, 39715000 Water heaters and heating for buildings; plumbing equipment, 42510000 Heat-exchange units, air-conditioning and refrigerating equipment, and filtering machinery, 44112000 Miscellaneous building structures, 44115200 Plumbing and heating materials, 44161200 Water mains, 44211100 Modular and portable buildings, 44320000 Cable and related products, 44322100 Cable conduits, 45112710 Landscaping work for green areas, 45213250 Construction work for industrial buildings, 45215222 Civic centre construction work, 45221200 Construction work for tunnels, shafts and subways, 45231300 Construction work for water and sewage pipelines, 45232100 Ancillary works for water pipelines, 45232430 Water-treatment work, 45232453 Drains construction work, 45233000 Construction, foundation and surface works for highways, roads, 45233300 Foundation work for highways, roads, streets and footpaths, 45240000 Construction work for water projects, 45252000 Construction works for sewage treatment plants, purification plants and refuse incineration plants, 45252210 Water purification plant construction work, 45262210 Foundation work, 45262500 Masonry and bricklaying work, 45314310 Installation of cable laying, 45315000 Electrical installation work of heating and other electrical building-equipment, 45316000 Installation work of illumination and signalling systems, 45331210 Ventilation installation 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