Editing Washing machine (section)

===Europe===
[[File:EU washing machines label.jpg|thumb|upright|The EU requires that washing machines carry an efficiency label.]]
Washing machines display an [[EU Energy Label]] with grades for energy efficiency, washing performance, and spin efficiency. Grades for energy efficiency run from A+++ to D (best to worst), providing a simple method for judging running costs. Washing performance and spin efficiency are graded in the range A to G. However, all machines for sale must have washing performance A, so that manufacturers cannot compromise washing performance in order to improve the energy efficiency. This labeling has had the desired effect of driving customers toward more efficient washing machines and away from less efficient ones.

According to regulations, each washing machine is equipped with a wastewater filter. This ensures that no hazardous chemical substances are disposed of improperly through the sewage system; on the other hand, it also ensures that if there is [[backflow]] in the plumbing system, sewage cannot enter the washing machine.<ref name="Tilley">{{cite book|isbn = 978-3-906484-57-0|url = http://www.eawag.ch/forschung/sandec/publikationen/compendium_e/index_EN|title = Compendium of Sanitation Systems and Technologies |edition=2nd |author= Tilley, E. |author2=Ulrich, L. |author3=Lüthi, C. |author4=Reymond, Ph. |author5=Zurbrügg, C.|publisher = Swiss Federal Institute of Aquatic Science and Technology (Eawag) |location=Duebendorf, Switzerland|page = 147|year = 2014}}</ref>