Closed

North West Hub Alliance

Tender ID: 600514

Tender Details

Organisation:

John Holland Pty Ltd

Tender #:

Status:

Closed

Publish Date:

17 November 2025

Closing Date:

14 December 2025

Tender Description

Overview

Sydney Water Corporation (the Principal) has appointed the Alliance Partners consisting of John Holland, KBR & Stantec under the Head Contract, to perform the design, construction, commissioning, and completion of the Budget 1 Northwest Treatment Hub (NWTH) Growth Program (Package 2 Riverstone WRRF)

Significant growth in Sydney's Northwest Growth Area and Metro Northwest Urban Renewal Corridor will create increased demand for wastewater services from each of the systems within the (NWTH) Growth Program area, including Castle Hill Water Resources Recovery Facility (WRRF), Rouse Hill WRRF and Riverstone WRRF.

This increased demand (forecasts indicate a 75% net flow increase by 2025), will exceed the capacity of existing the wastewater treatment systems. In addition, existing license non-conformances will worsen with growth. Tightening of effluent discharge limits into the Hawkesbury Nepean River system along with emerging PFAS regulations also drives a need to improve NWTH WRRF system performance.

Key program highlights include:

The works comprise of Riverstone WRRF Liquid Amplification Works to augment the plant treatment capacity for growth and meet EPL licence requirements. It includes:

- Augmentation to existing Inlet works.

- New Secondary treatment process.

- Modifications to Chlorine Contact Tank.

- High Voltage Infrastructure.

- Low Voltage Infrastructure.

- Ancillary Systems.

- Plant SCADA/PLC.

- Chemical storage and dosing systems.

- Roads and Drainage

- New Effluent Pipework

Riverstone WRRF Liquid Amplification works (current scope): Upgrade of the liquid stream from the current 19 ML/d nameplate capacity to 41 ML/d ADWF.

Work Packages	Closing Date
Crane Hire	14 Dec 2025
Demolition (of existing structures)	14 Dec 2025
Fencing	14 Dec 2025
Labour Hire	14 Dec 2025
Piling	14 Dec 2025
Quarry Material Supply	14 Dec 2025
Scaffolding	14 Dec 2025
Street Sweepers	14 Dec 2025
Surveying	14 Dec 2025
Traffic Management	14 Dec 2025

Express interest for any opportunities that may arise for this project.

Location

New South Wales : Central West : Far North Coast : Far West : Hunter : Illawarra : Mid North Coast : Murray : New England : Orana : Riverina : Southern Highlands : Sydney

Category

Plant & Equipment : Plant & Equipment Hire
Cleaning Services & Equipment & Supplies : Road & Footpath Sweeping Services
Electrical Systems & Lighting & Equipment & Services : Electrical Services
Engineering & Research & Technical Based Services : Engineering Consulting Services
Security & Parking & Traffic Services & Equipment : Traffic Management & Control Services
Building Products & Materials : Quarry Products : Scaffolding
Building & Facility Construction & Maintenance Services : Commercial & Industrial Construction Services : Fencing
Civil Construction Services : Civil & Earthworks (General) : Demolition & Removal : Road & Streetscape Construction & Maintenance : Stormwater Harvesting & Drainage Construction
Water & Sewage : Water & Sewage Treatment Plant Construction : Water Tanks
Power Generation & Transmission & Distribution : Engines & Motors : Photovoltaic Systems : Power Generation Systems : Power Poles : Power Stations & Substations : Power Transformers : Power Transmission Line Construction
Human Resource Services & Recruitment : Temporary Personnel & Labour Hire Services
Industrial Automation & Process Control : Programmable Logic Controllers (PLCs) : SCADA Systems