Severn Trent Water has been ordered to pay £10,000 for pollution, the Environment Agency announced today.
The company reported an incident of water pollution that had discharged into the Potwell Dyke watercourse in Southwell, Nottinghamshire from its combined sewer outfall in 2012.
The water firm is only allowed to discharge into the watercourse during stormy conditions to prevent flooding, however at the time of the pollution report, weather conditions were dry, the Agency said.
Severn Trent Water was also fined £7,500 in April this year over a pollution charge in Shropshire.
An officer in charge of the investigation said: “Although Severn Trent Water reported the discharge to us immediately, it was too late to prevent the pollution of the Potwell Dyke.
“This case sends out a clear message that we will not hesitate to prosecute as necessary when environmental damage is caused.”