A discharge of untreated sewage that killed hundreds of fish has cost Thames Water more than £17,000.
The firm pleaded guilty before Woking magistrates on 15 April to polluting the Basingstoke canal, in Woking, Surrey, in 2009. For breaching section 85(1) and (6) of the Water Resources Act 1991, it was fined £12,000. Costs were £5,388.
An Environment Agency officer called to the scene early on 7 September 2009 saw a discharge entering the canal. The water was cloudy, smelt strongly of sewage and appeared to be killing fish.