CEN/TC 165 (CEN Technical Committee 165) is a technical decision making body within the CEN system working on standardization in the field of wastewater engineering in the European Union. Its goal is to develop functional standards, and standards for performance and installation for systems and components in the field of wastewater engineering.Latvijas standards (LVS). CEN/TC 165. Retrieved: 18 June 2015.
CEN/TC 165 was created on 01.01.1988 and Working Groups (WG) established under this Technical Committee are:CEN-CENELEC. CEN/TC 165 - Waste water engineering. Retrieved: 20 January 2026. WG1: General requirements for pipes WG2: Vitrified clay pipes WG4: Manhole tops, gully tops, drainage channels and other ancillary components for use outside buildings WG5: Fibre cement pipes WG7: Steel pipes WG8: Separators WG9: Concrete pipes WG10: Installation of buried pipes for gravity drain and sewer systems WG11: Gratings, covers and other ancillary components for use inside buildings WG12: Structural design of buried pipelines WG13: Renovation and repair of drains and sewers WG21: Drainage systems inside buildings WG22: Drain and sewer systems outside buildings WG30: Terminology in the field of wastewater engineering WG40: Wastewater treatment plants > 50 PT WG41: Small type sewage treatment plants (< 50 inhabitants) WG44: Non-sewered sanitation WG50: Use of treated wastewater
See also List of CEN technical committees List of EN standards
References