Overview

Network Plus is delivering a major Design & Build programme at Bury Wastewater Treatment Works (WwTW) to support United Utilities in meeting Water Framework Directive standards ahead of the April 2026 compliance deadline. The project includes the construction of two new 3,000m³ storm tanks, associated diversion infrastructure, and new power and control systems—significantly enhancing storm resilience and improving water quality in the River Irwell.

Background

United Utilities requires storm discharge improvements to ensure the Bury WwTW meets 99%ile Water Framework Directive storm overflow standards. The site also forms part of a wider programme aligned with United Utilities’ Level 2 Systems Thinking strategy.

To meet these requirements, Network Plus is providing a fully integrated solution comprising:

• New substation and MCC with interlinking platform
• 2 6,000m³ storm tanks
• 2 large manholes
• Interlinking tunnels
• MCERTS flow meter chamber and cabinet
• Concrete valve chamber
• Full civil, mechanical, electrical, and commissioning scope

Project Delivery

Network Plus is collaborating with key partners—including VJ Donegan (VJD) and Eric Wright Water (EWW)—to deliver a design developed by Pick Everard.

The build has progressed steadily through each stage, despite challenging and variable ground conditions that required adaptive engineering and design modifications. At peak, up to 30 operatives were on site during early excavation and mobilisation—reflecting the scale and pace of work required to meet programme deadlines.

The wider supply chain, including Cusack, RS Scaffold, Mectec, Offafix, K Sweep, Selwood, and Lightline Electrical, has provided essential support across temporary works, M&E installation, tunnelling, and site safety.

Collaboration & Customer Engagement

Close partnership with United Utilities Operations, the Construction Manager, and Project Coordinator has been central to successful delivery to date. Active stakeholder engagement ensures:

• Minimal disruption to site users and neighbouring residents
• Rapid resolution of operational queries
• Shared programme ownership through daily and weekly coordination meetings
• This collaborative approach has strengthened communication pathways and maximised efficiency throughout the construction phase.

Progress to Date

The project has achieved several key milestones, including:

• Completion of major excavation and tunnelling
• Installation of primary storm tank structures
• Commissioning of temporary and permanent electrical systems
• Construction of interlinking chambers and flow measurement infrastructure
• With construction progressing ahead of planned trajectory, the project is well positioned to meet the April 2026 regulatory target.

Conclusion

The Bury WwTW Storm Tank Programme showcases Network Plus’ ability to deliver complex civil and mechanical infrastructure in partnership with United Utilities and its supply chain.

Through adaptive engineering, strong collaboration, and decisive project management, the team is supporting long‑term environmental improvements for the River Irwell and reinforcing wastewater resilience for the Northwest.