The company will pay £50,000 to the Wildlife Trust for Bedfordshire, Cambridgeshire and Northamptonshire after a manhole overflowed with black sludge and grey liquid into the watercourse at Highfield Farm near Ravensden.
The Environment Agency said the incident, which caused raised ammonia levels levels in the watercourse, was classified as a category 2 by the organisation.
-- Advertisement --
The blockage was traced to the Yarlswood Immigration Centre and involved single-use shampoo sachets which the facility provided for residents. There had been six blockages on the same stretch of sewer since 2011 when it was transferred to Anglian Water, however it was not added to the company's mapping system until after the incident in June 2015.
The £50,000 donation will benefit the local environment of Nene Valley and Ouse Valley Living Landscape areas. Anglian Water has also paid back £3,451 in costs.
Chris Tate, Environment Agency Team Leader, said: "Enforcement undertakings allow those who commit offences to restore the environment and to take steps to prevent a recurrence.
"When appropriate, they allow a quicker resolution than a prosecution and help offenders who are prepared to take responsibility for their actions to put things right voluntarily working with their local communities."
(LM)
