Thames Water baulks at cost of clearing worst ever sewage pollution of the Wealdstone Brook

From Brent and Harrow Rivers Alliance  BHRA -  Harrow Friends of Wealdstone Brook  Supported by Brent Parks Forum.   

 

 

 

 From This:  Ducks and Wagtails feeding...

 

 

 To This:  60m and growing raw sewage left untreated with no source yet found  

Since around the 6th March there has been a constant flow of sewage into the Wealdstone Brook from a still unidentified site in Harrow.

The Environment Agency were immediately advised and have not responded to repeated updates of  the incremental thick raw sewage flow that continues unabated.   Thames Water - were also advised in the correct manner direct to their office after the contact Pollution Line was in effect blocked with calls about pollution events (we assume).

Brent Officers; and the CEO of Thames Water attended an unprecedented meeting at the Brook at Woodcock Park on 28th March and took part in a morning walkabout of the site and  saw for themselves the worst, longest running pollution event since recording has begun.

We are awaiting action from Thames Water who were concerned that they would have to deploy operatives from another job to attend the site and the cost of the job itself - which involves flushing a tank of clean water into the brook to move the daily increasing 50-70 m of sewage along! 

There was no  reaction from Thames Water to the imminent threat to the wildlife all the way along past the Civic Centre, three schools and into the River Brent through the Wildlife restoration Project that Thames21 runs. The pollution will slowly increase and move along the waterway!   Unless the source is found and remedied the threat to wildlife will be compounded.   As it has been left since the 10th March - 'vacuuming' - out the pollution is now out of the question - Thames Water do not have tanks large enough to cope with the volume that is increasing steadily.   A factory misconnection is suspected......

Now over 400 food packets (we think out of date), have been thrown into the Brook at the trash screen in Kenton - which has now got thoroughly stuck in the midst of the sewage and the bags are exploding open to feed the sewage fungus in the gel - sludge.   This amount of plastic in the sewage will act as fungus and e-coli carriers as they move towards the wildlife water improvement projects further downstream.   

Volunteers cannot reach them where they are located and have come to rest!  

Thames Water could send in operatives but they are concerned about the cost!   

We await some action to stop the sewage flow into what was a duck filled brook!  

We thank the Brent Engineer - who has visited and has now written a full report of the Brook and his findings.    We also thank Brent Parks Officers who are and continue to be supportive, within their capacity.   

It is possible that that the first signs of sewage were on 17th, 23rd and 27th February when reports to the Environment Agency mentioned murky brown water and silt. The sewage outbreak was reported on February 28th.  If an early warning system was in place Thames Water might have investigated much earlier and resolved the issue.

A Thames Water officer has indicated that the cause of the sewage  flow has been located and Friends of Woodock Park have emailed to confirm the location and the need for flushing.  They assume that the sewage currently visible from Becmead Avenue may indicate an equivalent amount underground at the source.

The Wealdstone Brook, marked in blue on an extract from an 1895 Ordnance Survey map