Thames Water to Act on Smell

The hope is that Mogden will smell less


Thames Water Customer Services - Mogden Line (24hr/day): 0845 641 0030

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Mogden Residents' Action Group (MRAG)

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Isleworth residents should be able to breathe easier next year after Hounslow Council clinched an agreement with Thames Water which is expected to reduce the smell coming from the utility company’s Mogden plant.

Following a meeting with Councillor Colin Ellar and council officials, Thames Water has agreed to install new sensors in the digesters - which produce bio-gas from sewage – and also trial a new form of anti-foam around the seals.

With work due to be completed by the end of April next year, officials believe the development should reduce the smells from the plant. Thames Water has also agreed to investigate how odour can be reduced from the feed channels serving the storm water tanks.  

Councillor Colin Ellar, deputy leader and cabinet member for environment, said:

“I am glad to announce that after these positive talks, Thames Water, as a good neighbour, has agreed to put these new improvements in place.  As a council we are determined to do all we can within our power to improve the quality of life of our residents.”

Thames Water spokesperson said:

“We know that odour is major concern to people, and we will continue to work with the London Borough of Hounslow and residents' groups to explore new ways of managing this issue.   Our new upgrade to the site is working well, with many parts of the works now covered and odour controlled.  This should help reduce likelihood of nasty smells coming from our site.”

Hounslow Council has also confirmed it will continue to provide its seasonal 24/7 monitoring service on the Mogden site which was due to finish at the end of last month.

Residents can contact the service on 020 8583 2000 and they will receive a response from the duty officer within one hour.  If residents experience odour, officers will carry out a visit and make an objective assessment.

If odour levels are significant, officers will contact Thames Water and try to identify the source of the problem.

Updates are also available by calling the Mogden Information Line on 020 8583 5745. 

For general enquires residents can also email

Hounslow Council also carries out a weekly inspection of the site. The inspections can be viewed at  

December 11, 2013

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