Hepscott STW Storm Upgrade

Water & Wastewater

Hepscott STW Storm Upgrade

Project Summary

Retroflo were engaged directly by Northumbrian Water Group as Principal Designer and Principal Contractor to increase Hepscott STW storm tank capacity in line with EA Permit 226/1281. The project included the installation of a new storm tank with automatic emptying and mixing, updated instrumentation, and full mechanical and electrical works. The upgrade provides a minimum storm storage volume of 35.5 m³ and ensures effective monitoring and control of storm flows.

Scope of Works

Retroflo provided a full end-to-end service, including:

- Supply and installation of MCERT inlet flow measuring flume
- Design, supply and installation of storm returns pump and tank mixer
- Design, supply and installation of new control panel and kiosk
- Design, supply and installation of wash water booster set with header
- Below-ground pipework, reinstatement and landscaping
- Full mechanical and electrical design and installation
- Project management and coordination of civils sub-contractor
- NICEIC 18th Edition testing, commissioning and documentation
- Full testing and commissioning
CCM-managed contract

Results

Increased storm tank capacity to 35.5 m³ for compliant storm flow management
Integrated monitoring and control systems for efficient operations
Full mechanical and electrical installation with NICEIC certification
CCM-managed turnkey delivery completed on time with minimal disruption

Project Details

Client

Northumbrian Water Group (NWG)

Project Value

£430,000

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Project Highlights

Increased Storm Tank Capacity

Retroflo, appointed as Principal Designer and Principal Contractor, delivered a full mechanical and electrical upgrade at Hepscott STW to meet EA Permit 226/1281, providing a minimum storm storage volume of 35.5 m³.

Advanced Monitoring & Control

The project included a new control panel and kiosk, MCERT inlet flow measuring flume, storm returns pump, tank mixer, and wash water booster set with header, ensuring precise monitoring and effective control of storm flows.

Comprehensive M&E Delivery

Retroflo completed full mechanical and electrical design, installation, and commissioning, including NICEIC 18th Edition testing and certification, while coordinating civils sub-contractor works for pipework, reinstatement, and landscaping.

Turnkey Project Management

The CCM-managed contract ensured seamless project delivery, combining design, installation, testing, and commissioning into a single coordinated solution.