Advanced Notice - Upcoming Waihī Beach Wastewater Treatment Plant Upgrade (Design and Build)

Details

RFx ID :	34795855
Tender Name :	Advanced Notice - Upcoming Waihī Beach Wastewater Treatment Plant Upgrade (Design and Build)
Reference # :	25-1072
Open Date :	Thursday, 27 August 2026 8:00 AM (Pacific/Auckland UTC+12:00)
Close Date  :	Thursday, 10 September 2026 5:00 PM (Pacific/Auckland UTC+12:00)
Tender Type :	Notice of Information (Advance Notice) (NOI)
Tender Coverage :	Sole Agency  [?]
Categories :	83101500 - Water and sewer utilities
Regions:	Bay of Plenty
Required Pre-qualifications :	None
Contact :	Procurement Team Procurement@westernbay.govt.nz

The Waihī Beach Wastewater Treatment Plant (WWTP) requires renewal, and upgrade works to improve treatment performance, operational resilience, and long-term reliability. A key driver for the project is the reinstatement of critical treatment infrastructure, along with associated improvements to supporting plant systems and assets to ensure the facility can continue to meet the needs of the Waihī Beach community.

Since the previous market engagement, Western Bay of Plenty District Council has reviewed the project scope, funding requirements, and delivery approach for the Waihī Beach Wastewater Treatment Plant Upgrade. As a result of this review, the project has been refined, and we are now re-engaging the market to seek suitably qualified suppliers for the next phase of delivery. The project, which has reduced in scope, consists of reinstatement of the SBR (Sequencing Batch Reactor), upgrading the inlet works, upgrading the electrical control centre, and completing associated ancillary works.

While the final contract value will depend on the confirmed scope, design solution and tender outcomes, we currently expect this to be a moderate-scale Design and Build project rather than a major Tier 1-only infrastructure package. The opportunity is therefore considered suitable for capable Tier 1 and Tier 2 contractors, including local and regional contractors, who can lead a Design and Build contract and manage the necessary design, specialist supplier, subcontractor and commissioning inputs.

We will shortly invite suitably qualified and experienced Contractors to submit a Registration of Interest (ROI). Following evaluation of ROI submissions, a shortlist of Respondents will be invited to participate in a Request for Tender process for delivery of the project under a Design and Build contract model. Please see the attached for further details.