45253600 - Deionisation plant construction work

CPV code 45253600 in the EU Common Procurement Vocabulary refers to Deionisation plant construction work. It sits at level 5 of the CPV hierarchy as a subcategory within the 45 division. This code is nested directly under 45253000, narrowing the broader category into the specific area of deionisation plant construction work. As a leaf code, 45253600 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 deionisation plant construction work. Contracting authorities across the EU use 45253600 in TED notices and national procurement portals to signal that a tender relates to deionisation plant construction work.