Updated: Feb 20
Targets for 75% of rivers to be healthy by 2027 are "very unlikely" to be met in England, a charity has warned.
The World Wide Fund for Nature (WWF) says rivers are "used as open sewers".
The Environment Agency predicts 75% of rivers in England and along the Scottish and Welsh borders will meet EU expectations by 2027, compared with just 14% now.
It is planning an autumn consultation on "challenges and choices" faced in cleaning up water.
The agency said it would review the target based on "what can realistically be achieved".
By Daniel Wainwright & Paul Bradshaw BBC News