Using expert techniques, we help clients upgrade and maximise their existing assets to ensure they comply with evolving regulatory standards and are robust enough to stand the test of time.
We strive to find innovative ways to breathe new life into existing infrastructure to expand our clients’ sewage processing capacity. From refurbishing existing assets to repurposing obsolete facilities, our tailored enhancement programmes cost a fraction of building new, reduce asset downtime, and achieve goals without compromising the environment.
Our expert enhancement programmes extend beyond traditional, grey-box infrastructure. Our reed bed and artificial wetland refurbishment services increase site sustainability, improve effluent quality and promote optimal wastewater processing.


Wastewater assets
- Storm tanks
- Combined sewer overflow
- Reed beds
- Outfalls
- Artificial wetlands
- Drainage
- Storm lakes
- Sludge tanks
- Settlement tanks
- Lagoons
- Filter tanks
- Bio-filters
- Access steps & platforms
- Digesters
- Holding tanks
- Treatment tanks
- Trickling filters
- Wet wells
- Septic tanks
Wastewater enhancement services
- Access refurbishment & upgrade
- Brick & concrete repairs
- Lagoon liner repair & replacement
- Protective coating application
- Pipework recoating
- Reed bed refurbishment
- Storage & treatment tank refurbishment
- Storage & treatment tank re-waterproofing
- Storm tank extensions
- Storm tank modifications
- Stone repairs & re-bedding
I am part of the wastewater asset maintenance team, where we support our clients in ensuring their assets comply with government regulations. I am proud of the work I do at Stonbury, which directly contributes to improving water quality, reducing storm overflow discharge and maintaining sustainable tertiary treatment systems.
Derek Allgood
Project Manager
Awards & Accreditations






















