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Stonbury

Stonbury is an agile, direct delivery specialist contractor to both the water industry and wider water environment, with an emphasis on delivering innovative, low carbon and high-quality reliable solutions.

Currently holding over 30 Frameworks, we work with most of the UK’s water companies and the EA – either directly or through their major supply chains – to deliver high value, low carbon solutions across their asset estates. This includes works on potable water, wastewater treatment centres and nature-based ‘green’ and ‘grey’ solutions that deliver smart, low carbon environmental engineering.

In recognition of the intensified global focus on the effects of carbon emissions and their impact on the climate and biodiversity we have reassessed our Purpose, Vision and Strategic Goals, putting sustainability at the heart of our culture and everything we do.

Langford Weir Fish Pass (2025)

Reconnecting rivers: the construction of a dedicated fish and eel pass on the River Blackwater to re-connect river channels

Embsay WTW (2024)

Embsay Water Treatment Works is a standalone 24 ML/d water treatment works operated by Yorkshire Water (YW) and located in the Yorkshire Dales National Park, providing clean water to over 15,000 people in Skipton and surrounding areas. The existing works comprises of clarifiers, rapid gravity filters and a chlorine contact tank with associated chemical dosing. […]

Bourn Reservoir (2023)

Bourn Reservoir is an above-ground reservoir complex located approximately five miles outside Cambridge, England. Only one tank was still operational after the other two were removed from service due to natural degradation. A new tank was required to meet demand from large-scale developments in the supply area. A review was conducted to ascertain the total […]

College Avenue Contact Tank (2020)

South East Water’s College Avenue Water Treatment Works in Berkshire supports the Maidenhead water supply infrastructure. It extracts raw water from three boreholes and three chalk wells, which is then dosed with sodium tripolyphosphate (STPP), aerated, passed through granular activated carbon (GAC) absorbers, and finally injected with sodium hypochlorite to super-chlorinate it before entering the […]

Aubrey Street Reservoir (2019)

United Utilities has completed the refurbishment of Aubrey Street Reservoir, a 40Ml underground service reservoir located just outside Everton and serving Liverpool district. Treated water for the 41-year-old reservoir is pumped in from Huntington Water Treatment Works in Chester. The main driver for the project was water quality, which risked being compromised by heavy ingress […]

Whittle Dene WTW (2018)

Whittle Dene Water Treatment Works is Northumbrian Water’s fourth largest treatment works with a deployable output of 118Ml/d, supplying 228,000 properties. Located in Northumberland, 13 miles west of Newcastle, it is a strategically important works to Newcastle, Gateshead, North Tyneside, South Northumberland and Tyne Valley regions. Raw water at the site comes from adjacent reservoirs […]

Malpas Service Reservoir (2017)

Service reservoirs play a key, if sometimes unsung, role in the supply of clean water within the UK. While most are far less visible and well known than the open reservoirs and other sources they serve, they balance supply and peak demand and ensure that customers’ taps never run dry. The refurbishment of one such […]

Outwoods Reservoir (2017)

The original Outwoods Reservoir (No.1) was constructed in 1882 in Burton on Trent. An additional Reservoir (No.2) was added in 1962 in response to increased demand on supply. In 2017, South Staffs Water awarded Stonbury the contract to replace Reservoir No.1 which has proven increasingly expensive to update and maintain and was taken out of […]

Stonbury

DWI Regulation 31 (2018)

The water industry is highly-regulated, most particularly to ensure that drinking water is safeguarded and fit for human consumption. The Drinking Water Inspectorate (DWI), formed in 1990, holds responsibility for regulation in England and Wales. The DWI inspects the laboratories where water companies rigorously test their drinking water and ensure that water operations are of […]

What we do:

Asset Maintenance & Rehabilitation: Concrete Repair | Pipeline Rehabilitation | Refurbishment | Servicing & Repair | Tank Maintenance & Repair | Waterproofing

Concrete Works: Concrete Repair | Formed Reinforced Concrete Contractors | Formwork & Falsework | Reinforcement | Waterproofing

Contractors: Civils | Flood Alleviation | Formwork & Falsework | Reservoirs | Tier 1 | Wastewater Treatment Works | Water Treatment Works

Designers: Civils Design | Pipeline Design | Process Design | Temporary Works Design | Wastewater Treatment Design | Water Treatment Design

Networks - Sewerage: Contractors | Pipelines - Sewers | Wastewater Pumping Stations

Networks - Water Supply: Contractors | Pipelines - Trunk Mains | Water Pumping Stations

Reservoirs - Raw Water: Contractors

Reservoirs - Treated Water: Concrete - Cast-In-Place | Contractors | Designers

River & Coastal Flood Protection: Attenuation Tanks | Coastal Defences | Contractors | Designers | Nature-based Solutions | Pumping Stations

River Work: Contractors | Designers | Fish Passes | Habitat Restoration | River Restoration | Wildlife Management

Stormwater Storage: Contractors | Designers

Treatment Process Technologies: Sludge Treatment | Treatment Stage - Preliminary | Treatment Stage - Primary | Treatment Stage - Secondary | Treatment Stage - Tertiary