Installing waterless or water - reduced urinals can save thousands of litres of water per match .
Are in use at Arsenal FC , Leyton Orient FC , MK Dons FC and the 2012 Olympic Lee Valley White Water Centre .
Installing waterless or water - reduced urinals can save thousands of litres of water per match and are in use at Arsenal FC , Leyton Orient FC , MK Dons FC and the 2012 Olympic Lee Valley White Water Centre .