31161400 - Primary water systems

CPV code 31161400 in the EU Common Procurement Vocabulary refers to Primary water systems. It sits at level 5 of the CPV hierarchy as a subcategory within the 31 division. This code is nested directly under 31161000, narrowing the broader category into the specific area of primary water systems. As a leaf code, 31161400 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 primary water systems. Contracting authorities across the EU use 31161400 in TED notices and national procurement portals to signal that a tender relates to primary water systems.