A five-year project to catalogue almost 20,000 Thames Water photographs has revealed an extraordinary range of historic images charting the development of London’s water supply and sewer network in the 19th and 20th centuries.
They include images of the sewer network during construction, engineers called “flushers” descending into drains and a boat known as a “sludge vessel” which collected and disposed of waste, as well as “Don’t Waste Water” posters from the former Metropolitan Water Board, predecessor to Thames Water.
The initiative, which was carried out in partnership with the City of London Corporation, saw archive staff at London Metropolitan Archives repackage lantern slides and glass plate and photographic negatives dating back to the 1880s.
Photo:Sewardstone service reservoir under construction
The images were ordered and repackaged to professional archival standards which will help preserve them for generations to come.
In total, 19,579 glass slides and transparencies were catalogued in acid-free photon envelopes and boxes to help protect these fragile formats from damage.
They are now stored at London Metropolitan Archives in Farringdon alongside Thames Water’s extensive collections from London’s former water companies which date back to 17th century.
Many of the images were also digitised by an external contractor and displayed online to be viewed by the public.
They show the development of London’s reservoirs in the Lea Valley and west London, historic maps of Clerkenwell showing the location of New River Head, the former offices of Thames Water, tree trunks which were hollowed out and fit together to create pipes to supply water, a navvy foreman from Chingford, members of the Metropolitan Water Board’s Fire Service and a young boy with a 23lb pike caught at Stoke Newington reservoir in 1928.
Rosemary Waugh, Thames Water’s corporate responsibility manager, said:
“These images offer a fascinating insight in to how the water industry worked more than 100 years ago.
“They show how the industry has changed but also that we share a lot of the same challenges and methods today.
“We’re delighted that, by working with the City of London Corporation, we’ve been able to preserve these pictures for future generations to enjoy.”
Graham Packham, chairman of the City of London Corporation’s culture, heritage and libraries committee, added:
“Our partnership with Thames Water has enabled these unique photographic images, dating from the 1880s to the 1970s, to be preserved at London Metropolitan Archives and made accessible online for future generations.
“Not only do they chart the development of London’s clean water supply from the New River built in the 17th century, these remarkable images also capture the personalities of the people who worked on the network.”
To view the images, visit https://archive.thameswater.co.uk
With the UK government demanding a 50% reduction in storm overflow spills by 2029, the era of reactive management is over. Speaking in the House of Commons on 21 July 2025, then environment secretary Steve Reed said, “This Government will cut water companies’ sewage pollution in half by the end of the decade.”
ERG, the leading supplier of odour control systems and industrial gas cleaning & thermal systems, has been awarded the coveted King’s Award for Enterprise.
Welsh Water’s new artificial intelligence-driven tool, ORAI, has been shortlisted for three categories at the prestigious British Data Awards 2026 – underscoring the company’s commitment to using cutting-edge technology to deliver better outcome for customers.
Barhale has completed work on two separate Rapid Action Taskforce Spills projects it is carrying out for Severn Trent.
Hear how Scottish Water has completed its £235 million Ayrshire Glasgow Resilience Project - customers across Greater Glasgow, Ayrshire and East Renfrewshire will now benefit from a more secure and resilient water supply.
Hear how United Utilities is accelerating its investment to reduce spills from storm overflows across the Northwest.
Find out more about the remarkable career opportunities on offer at WSP - scroll down to watch the inspirational video.