United Kingdom - The Mandatory Water Efficiency Labeling (MWEL) Regulations 2026

​These Regulations have been developed in accordance with international standard ISO 31600:2022. The Regulations will place obligations on both dealers and suppliers. Suppliers will have to test their products to determine the correct water efficiency banding of covered products, produce the necessary labels to be affixed to the products, and provide the labels free of charge to dealers. They will also have obligations in relation to providing information in relation to the water efficiency of relevant products for inclusion in a database. Dealers will have to ensure that the label is clearly visible at all times at point of sale.

This measure covers only the following specific products: taps; showers (including electric showers); toilets; urinals; dishwashers; washing machines and washer-dryers.​​