90733400 - Surface water treatment services

CPV code 90733400 in the EU Common Procurement Vocabulary refers to Surface water treatment services. It sits at level 5 of the CPV hierarchy as a subcategory within the 90 division. This code is nested directly under 90733000, narrowing the broader category into the specific area of surface water treatment services. As a leaf code, 90733400 has no further subdivisions and represents the most precise classification available in this branch — buyers should reference it directly in tender notices when the procurement primarily concerns surface water treatment services. Contracting authorities across the EU use 90733400 in TED notices and national procurement portals to signal that a tender relates to surface water treatment services.