Portsmouth goalkeeper David James has attacked Chelsea's loos.
James, who campaigns on green issues, said: "I've been told that at Chelsea they have a toilet system that flushes automatically every 20 seconds which must entail using a ridiculous amount of water."
However, Chelsea suspect James has got his facts wrong.
Stamford Bridge dressing rooms are equipped with automated urinals, but they only flush after use.
A Chelsea spokesman said: "Environmental issues are something we take very seriously so much so the new Cobham training ground was designed with environmental factors in mind."