Wastewater Treatment Plant Capacity Expansion

Closes in 41 daysSubmission deadline: 29 October 2026, 02:30 PM Australia/Perth

About this tender

Overview The Rottnest Island Authority (RIA) is seeking suitably qualified and experienced contractors for the Wastewater Treatment Plant Capacity Expansion works. Scope The scope includes: Design of the upgraded Wastewater Treatment Plant Upgrade and construction works for the Wastewater Treatment Plant Integration of the upgraded plant Testing and commissioning of the upgraded plant Handover of the upgraded Wastewater Treatment Plant Site Inspection A site visit will be held for this opportunity. Date: 25 September 2026 Time: 9:00 AM Location: RIA Hub Office (behind Dome cafe), Henderson Ave, Rottnest Island Attendance must be confirmed no later than 2:00pm on 24 September 2026 via email at russell.bartels@dbca.wa.gov.au. Attendance at the briefing is a pre-requisite to submission and consideration of a bid. Enquiries Contractual: Rottnest Procurement, rottnest.procurement@dbca.wa.gov.au Technical: Russell Bartels, russell.bartels@dbca.wa.gov.au

How to respond to this tender

A strong tender response is clear, compliant, and backed by evidence. These steps apply to most Australian and New Zealand public tenders.

Read the requirements in full

Open the official listing and download the full tender pack. Note the response schedules, evaluation criteria, mandatory conditions, and the exact closing time and lodgement method.

Confirm you are eligible and it is worth bidding

Check licences, insurances, certifications, and any conformance requirements before you commit. A quick bid or no-bid decision saves days of wasted effort on a tender you cannot win.

Answer every criterion with evidence

Respond to each evaluation criterion directly and back your claims with concrete examples, referees, and past performance. Address the buyer’s stated need, not a generic capability statement.

Lodge early through the official portal

Submit through the source portal well before the deadline. Late or incorrectly lodged bids are almost always rejected, so leave time for uploads, portal errors, and last-minute questions.

Ready to write winning tenders?

Sign up today, what a relief.

Sign up