Johnson St CSO / Temporary Pumping Station

Water & Wastewater

Johnson St CSO / Temporary Pumping Station

Project Summary

Retroflo were engaged by Esh/Stantec (supported by NWG) to deliver mechanical and electrical design, installation, and commissioning of a temporary pumping station and a permanent CSO. The project enhanced the resilience and performance of the Gateshead sewer network. The temporary pumping station was decommissioned after enabling works, with the MCC repurposed for use at Esh Winning SPS. The permanent installation included mechanical screens, an actuated penstock, associated instrumentation, telemetry, and a new control panel. The scheme won the ICE Robert Stephenson Award in the Large Category in March 2023.

Scope of Works

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

Phase 1 – Temporary Pumping Station: walk-in kiosk housing NWG E0104 specification motor control centre, three 15 kW VFD operated pumps, associated instrumentation and telemetry outstation, temporary standby generator with automatic changeover, 350 mm & 300 mm ductile iron pipework, associated valves, 630 mm MDPE rising main
Phase 2 – CSO: new GRP kiosk, CSO control panel, actuated penstock, associated instrumentation and telemetry outstation
Mechanical and electrical design, installation and commissioning for both phases

Results

Strengthened Gateshead sewer network resilience
Repurposed MCC delivering added long-term value
Fully integrated CSO with compliant screening & controls
Award-winning project delivered on time and to specification

Project Details

Client

Esh/Stantec (supported by NWG)

Project Value

Estimated £5,000,000

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Project Highlights

Enhanced Network Resilience

Retroflo delivered full M&E design, installation, and commissioning for a temporary pumping station and a permanent CSO, strengthening the performance of the Gateshead sewer network.

Flexible Infrastructure

The temporary pumping station, complete with MCC, pumps, pipework, generator and telemetry, was successfully decommissioned post-enabling works, with the MCC repurposed for long-term use at Esh Winning SPS.

Permanent CSO Installation

The final scheme featured mechanical screening, actuated penstock, GRP kiosk, advanced control panel, and integrated telemetry for reliable, compliant operation.

Award-Winning Delivery

The project was recognised with the ICE Robert Stephenson Award (Large Category, March 2023), highlighting excellence in collaboration and engineering.