Western Water has identified that an upgrade of the Gisborne Recycled Water Plant (RWP) is required.

To deliver the best possible outcome for its customers, the communities of Gisborne, New Gisborne, Macedon and Mt Macedon, and the environment, Western Water wishes to engage with the open market and procure the works through a two-step engagement process:

Step 1: Request for Expression of Interest (RFEOI) process to prequalify and shortlist potential Tenderers.

Step 2: Request for Tender (RFT) for the works to be issued to the short-listed pre-qualified Tenderers.

The Gisborne RWP is located on the eastern outskirts of Gisborne, discharging to Jackson’s Creek under an EPA licence, approximately 2km east of Gisborne. It is owned and operated by Western Water.

The existing Gisborne RWP is a biological nutrient removal plant, and recent upgrades have been undertaken to both increase the plant’s capacity and its treatment performance. Despite the upgrades and improvements, several process units are currently reaching the end of their capacity, and growth in the region requires further upgrade works to proceed in the near future.

The Gisborne RWP Upgrade Project will involve design and construction of a new RWP entirely within the footprint of the existing Gisborne RWP with a two year operations and maintenance period.

The project has the following key objectives:

• Upgrade of the Gisborne RWP to meet a future forecast demand of 3.6ML/d at 2035 (Stage 1);
• Achieve improved water quality discharges to Jacksons Creek and delivery of the equivalent of a Class B recycled water quality;
• For the plant performance to maintain 100% compliance with the EPA licence provisions where discharge to stream occurs; and
• That the augmentation provides for an efficient investment in capital and operations, with scope to extend the investment.

The delivery arrangements for the development of the project are, at this stage, based on a Design, Construct arrangement with an Operations and Maintenance Term of 2 years.