Pike were among the thousands of fish and other animals killed when sewage polluted the River Wandle.
Now a meeting has agreed an ambitious plan to restock and revitalise the Thames tributary.
Thames Water admitted responsibility for the pollution, which happened on September 17. It apologised unreservedly to everyone concerned at the meeting, which was co-ordinated by the Anglers’ Conservation Association.
It was attended by the local angling clubs, the Wandle Trust, the Chief Executive of Thames Water, two of the company’s senior directors, fisheries staff from the Environment Agency and was hosted by the National Trust.
David Owens, Chief Executive of Thames Water, said: "We accept full responsibility for this incident and apologise to the many people who have been affected. We know that rehabilitation will be a long process, and that significant costs will be involved, but we want to get started as soon as possible.
"The first step is to commission an independent survey of the river to assess the damage and identify what work is required. We are committed to working openly and co-operatively with the Environment Agency, the ACA, angling clubs, the Wandle Trust and the local community on a plan that will not just restore the river but - in the longer term - improve it, for the benefit of people and wildlife."
Mark Lloyd, Executive Director of the Anglers’ Conservation Association said: “While everyone regrets that this incident ever happened, we are delighted that Thames Water has responded not only by accepting responsibility and promising to compensate those affected but they have also agreed to go the extra mile and commit to core funding the long term improvement of the river.
"This is a very welcome change from a company that the ACA has previously had to fight through the courts. We hope that this sets a precedent for any future pollution events not only by Thames Water, but by the rest of the water industry.”
Theo Pike, Trustee of the Wandle Trust and Senior Vice President of the Wandle Piscators said: ”we are delighted to have been assured of Thames Water’s commitment to working with the local community to mitigate the effects of this environmental disaster, and provide real partnership in restoring the Wandle to its rightful status as the best urban chalkstream in the world”.
Zoe Colbeck, Property Manager for the National Trust’s Morden Hall Park, said: “The River Wandle is an incredibly import resource for the local community and for wildlife. Over a number of years we have been working with the Environment Agency and other partners to improve the water quality and associated habitat. We are delighted that Thames Water have decided to contribute to this process and we are looking forward to working in partnership with them over the coming years. We hope this experience will also help us work more closely with Thames Water across the whole of the SE region.”
Charles Rangeley-Wilson, presenter of the BBC’s Accidental Angler series, said: “Catching and releasing a two and a half pound trout from the River Wandle this August was probably the most significant moment in my fishing career.
"I'd dreamt about doing this for a decade. It meant a lot to me that this urban river was recovering from centuries of pollution. That trout was an old warhorse of a fish and to think that it had endured for so long only to die in this recent, disastrous pollution was very depressing.
"Despite my despair at that news I'm now really delighted to see that the ACA has worked so quickly with Thames Water and the local community to develop an ambitious plan to get the river back on its upward curve of recovery as soon as possible.”