Heathwall Pumping Station

Site information

Thames Water and Tideway have completed works to upgrade the existing water and gas mains under Nine Elms Lane. This work was vital to prepare the essential utilities for our main works construction in the coming months. We have begun our main works construction at Heathwall pumping station. We will soon begin works such as site clearance, sewer outfall diversions, investigative boreholes and preparation for the construction of the main shaft.

Heathwall Pumping Station

August 2019

At Heathwall Pumping Station the team is working on sinking the two combined sewer overflow (CSO) shafts that will eventually capture the sewage that currently flows into the Thames on average every week. 

Both shafts are being excavated in the same way. A cutting head is installed around the outline of the shaft, before large concrete rings are placed on top and pushed down approximately 1 meter using jacking gallows. The material within the shaft is then dug out, before the next ring is installed.

Our first shaft has been excavated using this method to 20m deep in land. They will now excavate down before installing further rings below the existing structure. Once complete, this shaft will be 47m deep.

The team have started excavating the second shaft within the cofferdam, a dry working area built into the river. 8 rings have currently been sunk into the ground and the area within excavated. This second shaft will be 34m deep once complete.

All muck from the second shaft will be removed by barge following the completion of our ‘campshed’ structure, taking around 50 vehicles off the road with each barge.


What are our working hours?

Standard working hours

08:00 - 18:00 Monday - Friday

08:00 - 13:00 Saturday

Extended working hours

We currently have extended working hours for construction of the shaft

18:00 - 22:00 Monday - Saturday

There is a mobilisaton period of up to one hour both before and after the working hours plus maintenance periods on Saturday 1-5pm and Sundays 10am-4pm.

There will be 24-hour working during the construction of the Heathwall/South West Storm Relief connection tunnel

Loading of barges and barge movements would take place within standard hours

The date for our next CLWG for this site will be on Thursday 5 September 2019, at our Kirtling Street site from 19:00 - 21:00. 

13 June, 2019 - CLWG Minutes

13 June, 2019 - CLWG Presentation Slides

7 March, 2019 - CLWG Minutes

7 March, 2019 - CLWG Presentation Slides

Previous minutes are available upon request,  please contact the Tideway Helpdesk on 08000 30 80 80 or email [email protected]

  • All static machinery and plant is screened or enclosed
  • Vehicle movements outside of standard hours are restricted
  • Hoarding has been erected on the site boundaries
  • Push (silent) piling is used wherever possible

There are lots of ways to find out what’s happening at this site, you can:

  • Call our 24 hour Tideway Helpdesk 08000 30 80 80 or email [email protected]
  • Take a moment to read the latest updates on the noticeboards on our hoardings.
  • Email our dedicated Community Relations teams available to answer your questions or meet with you, via [email protected]
  • Join our regular Community Liaison Working Group meetings, to attend the meetings or receive the minutes and presentations from past meetings, email [email protected]

You can also follow our progress and what we're doing in our local communities on Twitter, Instagram and Facebook

Submissions to the Council 
We are making a number of submissions to the London Borough of Wandsworth as part of the consents we need to secure before starting different phases of work at the Heathwall site. These submissions are available to view on the London Borough of Wandsworth's planning portal. Please click here to be redirected to the portal. If you are interested on commenting on these submissions, please ensure you respond directly to the London Borough of Wandsworth.

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