This is an awarded contract.

View Live Tenders
Awarded contract

Flow Balance Tank Replacement at Rottnest Island WWTP

About

Rottnest Island Authority awarded a contract to AQWAgrid (Guidera O'Connor Pty Ltd) for the replacement of the flow balance tank at the wastewater treatment plant.

The scope included demolition of the existing tank, design and fabrication of a new tank, transport to Rottnest Island, construction, quality assurance, and a 10-year defects liability period.

Insight

This contract reflects ongoing infrastructure renewal at remote island facilities, where logistics and long-term maintenance are critical factors.

Value
$2,106,646.00
State
WA
Category
Water & Sanitation

Similar Open Tenders

Wastewater Treatment Plant Capacity Expansion – Rottnest Island Authority

Closes: 29 Oct 2026

Water & Sanitation

Clarifier 1 Renewal (Primary Sedimentation Tank) – Goondiwindi Wastewater Treatment Plant

Closes: 09 Nov 2026

Water & Sanitation

Replacement Office Building at Alstonville Wastewater Treatment Plant – Ballina Shire Council

Closes: 15 Oct 2026

Construction

Construction of Sludge Dewatering Facility at Burgowan Water Treatment Plant — Fraser Coast

Closes: 15 Oct 2026

Water & Sanitation

Texas Wastewater Treatment Plant Upgrade - Civil and Mechanical Works

Closes: 04 Nov 2026

Water & Sanitation

Lagoon Remediation at Roxby Downs Wastewater Treatment Facility – Bund Restoration, Pipe Encasement & Fence Works

Closes: 25 Oct 2026

Water & Sanitation

Waikerie Wastewater Treatment Plant Upgrade – Design and Construction Services (District Council of Loxton Waikerie)

Closes: 19 Oct 2026

Water & Sanitation

Electrical Works for Texas Wastewater Treatment Plant Upgrade – Goondiwindi Regional Council

Closes: 04 Nov 2026

Water & Sanitation

Construction of Maturation Pond 1 for Texas Wastewater Treatment Plant Upgrade – Goondiwindi Regional Council

Closes: 04 Nov 2026

Water & Sanitation

Colebatch Avenue Paving Upgrade – Rottnest Island Authority

Closes: 09 Oct 2026

Infrastructure

Design, Supply and Installation of Prefabricated Pump & Chlorine Buildings for Texas WWTP Effluent Reuse Project – Goondiwindi Regional Council

Closes: 07 Oct 2026

Water & Sanitation

Installation, Testing & Commissioning of 22 SCADAPack RTU Replacements (SCADAPack 474i) – Gladstone Area Water Board

Closes: 02 Nov 2026

Water & Sanitation

Other Similar Contracts

Value: $259,869

Decommissioning of Flow Balance Tank at Rottnest Island WWTP

Supplier: Programmed Facility Management Pty Ltd

Water & Sanitation

Value: $114,903

Civil Works for Flow Balance Tank Laydown Area at Rottnest Island

Supplier: Keslake Group

Construction

Value: $2,056,714

Water Network Replacement Design and Construct for Rottnest Island Authority

Supplier: Georgiou Group Pty Ltd

Water & Sanitation

Value: $1

Design, Supply and Installation of Screen and Grit Removal System for Rottnest Island Waste Water Treatment Plant

Supplier: Guidera O'Connor Pty Ltd

Water & Sanitation

Value: $28,704,808

Rottnest Island Desalination Plant Upgrade Design and Construct Contract Awarded to Guidera O'Connor

Supplier: Guidera O'Connor Pty Ltd

Water & Sanitation

Value: $232,216

Design of Water Distribution System for Rottnest Island Authority

Supplier: GHD Pty Ltd

Water & Sanitation

Value: $358,095

WWTP and Powerhouse Upgrade on Rottnest Island

Supplier: MGC Solutions Pty Ltd (Signals Infrastructure Services Pty Ltd)

Infrastructure

Value: $1,479,344

Wastewater Treatment Plant Refurbishment by Programmed Facility Management for Rottnest Island Authority

Supplier: Programmed Facility Management Pty Ltd

Water & Sanitation

Value: $53,009

Supply and Installation of Dive Tank Refill Facility for Rottnest Island Authority

Supplier: Draeger Safety Pacific ((inactive) Draeger Safety Pacific Pty Ltd)

Infrastructure

Value: $150,628

Provision of Design, Tender, Construction Management and Superintendence for Rottnest Island Wastewater Treatment Plant Refurbishment

Supplier: coNEXA Projects & Operations Pty Ltd

Water & Sanitation

Value: $426,119

Consultancy Services for WWTP Expansion to 800 m3/day for Rottnest Island Authority

Supplier: coNEXA Projects & Operations Pty Ltd

Water & Sanitation

Value: $290,195

Upgrade of Potable Water Transfer Pump Stations 1 and 2 on Rottnest Island

Supplier: Novatron Australia (Silkway Holdings Pty Ltd)

Water & Sanitation

Live Feed

Tenders and contracts,
consolidated and enriched.

We pull tenders and awarded contracts from government portals around the clock. Each one is categorised, enriched, and searchable shortly after it's published.

Multiple portals, single feedAusTender, all state portals, Tenderlink, and more. Scraped, categorised, and enriched automatically.
Categorised and enrichedEvery tender and contract is tagged by category, agency, value, and region.
Updated around the clockNew opportunities appear within hours of being published. Never stale.

Smart Recommendations

Matched to your business,
automatically.

Our AI reads every new tender and contract, and recommends the ones relevant to your business in real time. No searching required.

AI and keyword matchingSemantic AI understands your business. Keyword alerts catch exact matches.
Delivered to your inboxNew matches emailed daily. Tenders, contract awards, and supplier wins.
Supplier and contract watchFollow any supplier or category. Get alerted when new contracts are awarded.

Your Dashboard

Configure once,
run on autopilot.

Set up your alerts, watchlists, and preferences from your dashboard. GovMarket works in the background so you can focus on winning work.

Custom alert profilesCreate up to 10 alert profiles.each with its own keywords, categories, and regions.
Competitor trackingAdd suppliers to your watchlist and monitor their wins across government.
Agency spend and pricingBenchmark pricing, track agency budgets, and understand where government spends.

GovMarket AI

Search tenders and contracts
in plain English.

Find tenders, look up suppliers, check who won contracts, and explore agency spend. Just type what you need.

Get Started

Win more government work.

Join suppliers across Australia using GovMarket to find and win contracts.

7 days free, then $49.99/AUD per month

You're In — Free Trial Activated

You now have full access to GovMarket Premium for 7 days. You’ll be charged at the end of the trial unless you cancel.

  • Tell Us What You Do — We'll surface the tenders that are most relevant to your business.

Not ready to trial?

See how GovMarket works and decide if it's a fit for your business.