Last reviewed: 30.5.2011 - 12.33pm
We want to keep our customers informed about Mogden Sewage Treatment Works.
We add new information to this page whenever there are any new developments or issues at the site.
Updates
16 January 2012 - Mogden Upgrade update
January is an important month for the team improving Mogden Sewage Treatment Works, as it heralds the start of our final year of construction and installation work.
20 December 2011 - Mogden Upgrade update
Construction work to increase capacity at Mogden Sewage Treatment Works will wind-down for Christmas at 3pm on Friday 23 December 2011.
23 November 2011 - Mogden Upgrade update
Over the last year, we have hammered into the ground 3,500 concrete piles to create the foundations for the additional treatment tanks. Fortunately, this means our noisiest construction activity is now at an end.
31 October 2011 - River Crane pollution - odour notification
A two-metre valve (penstock) in a major sewer serving Heathrow Airport jammed shut on Saturday afternoon at Cranford Bridge on the A4 Bath Road while engineers carried out routine maintenance.
21 October 2011 - Mogden Upgrade update
As the nights are drawing in, you may notice our workforce installing additional lighting around the western embankment. We are putting this in place so we can continue to carry out work to upgrade Mogden safely.
14 October 2011 - Sludge export problem further update
Further to our update notification on Wednesday 28 September regarding a rupture on the sludge pipeline from Mogden Sewage Treatment Works (STW) to Iver South Sludge Dewatering Centre (SDC), we can report that this issue has been resolved.
13 October 2011 - Primary tank drain down
The scraper on one of our west side rectangular primary settlement tanks has developed a fault and requires repair.
28 September 2011 - Sludge export problem update
Further to our notification on Wednesday 14 September regarding a rupture on the sludge pipeline from Mogden Sewage Treatment Works (STW) to Iver South Sludge Dewatering Centre (SDC), there has been no change in the situation and we are still using road tankers to transport sludge off-site.
27 September 2011 - Mogden Upgrade odour notification
As part of our upgrade works at Mogden, our contractors, Black & Veatch, are cleaning 13 of our sludge digester tanks in the south-west corner of the site.
23 September 2011 - Mogden Upgrade update
We are nearly past the peak of construction activity, and have almost finished building three of the four key treatment areas being extended.
14 September 2011 - Sludge export problem
There has been a rupture on the sludge pipeline from Mogden Sewage Treatment Works (STW) to Iver South Sludge Dewatering Centre (SDC), near the Colnbrook Bypass.
1 September 2011 - Unplanned maintenance work
Today we will be carrying out some unplanned maintenance on one of our process tanks in the pasteurisation area (towards the south-west corner of the site).
22 August 2011 - Mogden Upgrade update
We are now into our second year of construction to improve Mogden Sewage Treatment Works, and have already built more than half of the additional treatment tanks.
19 August 2011 - Mogden Upgrade odour notification
As part of our upgrade works at Mogden, our contractors, Black & Veatch, are cleaning 13 of our sludge digester tanks in the south-west corner of the site.
12 August 2011 - Mogden Upgrade odour notification
As part of our work to improve Mogden Sewage Treatment Works, we recently started cleaning grit from one of our concrete tanks.
2 August 2011 - Mogden Upgrade odour notification
As part of our work to improve Mogden Sewage Treatment Works, our contractors Black & Veatch will be demolishing one of the concrete tanks located in the north-west corner of the site.
1 July 2011 - Mogden Upgrade odour notification
As part of our upgrade works at Mogden, our contractors Black & Veatch are cleaning 13 of our sludge digester tanks in the south-west corner of the site.
28 June 2011 - Primary tank drain down
The scraper on one of our west side rectangular primary settlement tanks has developed a fault and requires repair.
24 June 2011 - Mogden Upgrade update
As we approach the end of the first year of construction, our work to upgrade Mogden is really starting to take shape.
25 May 2011 - Mogden Upgrade odour notification
As part of our upgrade works at Mogden, our contractors, Black & Veatch, are cleaning 13 of our sludge digester tanks in the south-west corner of the site.
19 May 2011 - Mogden Upgrade update
We are continuing to make good progress with work to improve Mogden, helped by the recent dry weather. We have now created enough room on site to build all of the new treatment tanks and interconnecting pipework.
15 April 2011 - Mogden Upgrade update
Now that spring has finally arrived, finer weather and improved ground conditions mean we can do more on the western embankment. We can also concentrate on building the new treatment tanks.
23 March 2011 - Odour from blocked drains
Due to the problem with the sludge main that we experienced last week, we had digested sludge returning to Mogden via our high level sewer.
18 March 2011 - Mogden Upgrade update
Our work to upgrade Mogden is moving well, and with improving ground conditions now that winter is nearly over, we will be able to carry out some more work on the western embankment soon.
15 March 2011 - Sludge export problem - update
Further to our notification on Thursday 10 March, we have resolved the problem with the sludge main from Mogden sewage treatment works to Iver South sludge dewatering centre and lowered the sludge stocks on site, particularly in our uncovered west side primary settlement tanks.
10 March 2011 - Sludge export problem
We have had a problem with the sludge main from Mogden sewage treatment works to Iver South sludge dewatering centre.
9 February 2011 - Minor sludge spill
We have had a minor sludge spill today inside one of our pump houses in the south-west area of Mogden sewage treatment works, and a full clean-up is being carried out.
10 January 2011 - Primary tank drain down
The scraper on one of our west side primary settlement tanks has developed a fault and needs to be repaired.
January 2007 to November 2010
Download our Mogden updates from January 2007 to November 2010.
