Can London's rivers be swimmable within 10 years? - ÃÛÑ¿´«Ã½ Sounds

Can London's rivers be swimmable within 10 years? - ÃÛÑ¿´«Ã½ Sounds
Can London's rivers be swimmable within 10 years?
Pollution, sewage, road runoff - is the Mayor's pledge achievable or realistic?