UTILITIES | PROJECTS


SEWER SIGHTS


Major milestones have been achieved on large new sewer projects, such as in London and Auckland, but many works continue to be vitally needed on existing smaller assets


Right and opposite: London Tideway project has come into operation in central London PHOTO CREDIT: LONDON TIDEWAY


Below:


Major tunnelling progress has been achieved on Auckland’s Central Interceptor project PHOTO CREDIT: WATERCARE


We briefly spotlight on progress on two major new large diameter sewer projects that are at advanced stages of construction and starting to come into operation, plus the ever necessary smaller diameter works using trenchless tunnelling to repair and renew underground assets.


London Major tunnelling for the London Tideway Tunnel began in 2018 and recently the first sections came into operation, at four sites, with more this year. The project was one of the major tunnelling


endeavours in the UK over recent years, especially so in London which had dominated. In the capital the other large works have included large investments for transport (Crossrail, now the Elizabeth Line; HS2; and, Silvertown) and also Phase 2 of London Power Tunnels. In terms of water and sewerage utility services, the


London Tideway Tunnel has been the biggest addition to the capital’s fundamental major infrastructure for decades - the last being the London Ring Main, for clean water. While the Ring Main created a large-scale loop of


clean water, to be tapped, the Tideway Tunnel is more like a drainage river, like a line through the capital into


16 | March 2025


Page 1  |  Page 2  |  Page 3  |  Page 4  |  Page 5  |  Page 6  |  Page 7  |  Page 8  |  Page 9  |  Page 10  |  Page 11  |  Page 12  |  Page 13  |  Page 14  |  Page 15  |  Page 16  |  Page 17  |  Page 18  |  Page 19  |  Page 20  |  Page 21  |  Page 22  |  Page 23  |  Page 24  |  Page 25  |  Page 26  |  Page 27  |  Page 28  |  Page 29  |  Page 30  |  Page 31  |  Page 32  |  Page 33  |  Page 34  |  Page 35  |  Page 36  |  Page 37  |  Page 38  |  Page 39  |  Page 40  |  Page 41  |  Page 42  |  Page 43  |  Page 44  |  Page 45  |  Page 46  |  Page 47  |  Page 48  |  Page 49  |  Page 50  |  Page 51  |  Page 52  |  Page 53