prEN 18247-1

Performance testing of on-site non-potable water systems - Part 1: Greywater systems

Publication date:   Oct 23, 2025

General information

40.60   Close of voting   Jan 15, 2026

CEN

CEN/TC 165 Waste water engineering

European Norm

93.025   External water conveyance systems

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Scope

This document specifies the testing conditions to assess the treatment performances of greywater systems.
Excluded from the scope of this document are:
- the testing of rainwater harvesting systems;
- the testing of systems for direct use as mentioned in EN 16941–2 "On-site non-potable water systems - Part 2: Systems for the use of treated greywater";
- the testing of blackwater treatment systems;
- the testing of wastewater treatment plant.

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prEN 18247-1
40.60 Close of voting
Jan 15, 2026