Tender: Wastewater Treatment Plant Capacity Expansion – Rottnest Island Authority

Released 2 months ago

Closes19 Nov 2026Updated
Likely valueEstimate$800K to $4.2MInflation adjusted
LocationRottnest Island, WA
SourceWA Gov
CategoryWater & Sanitation
ReferenceDBCARIAT0127
4 days leftCloses Thu, 19 Nov 2026

Rottnest Island Authority is seeking a supplier to provide construction services to expand the capacity of a wastewater and sewage treatment plant, classified under UNSPSC as Waste water and sewage treatment plant construction service. A briefing/site visit is mandatory for this tender.

Tender breakdown

From 14 documents
WWTP upgrade / MBR installationLump sum
Watch out for8

Attendance at the mandatory site visit and briefing is a pre-qualification requirement — failure to attend excludes the tender

Tender must be lodged electronically via Tenders WA; Tenderers must be registered on Tenders WA and comply with file name/size and format rules

WWTP must remain operational — contractor must plan staging, integration and coordinate outages with operations staff

Pulled from the tender documents by AI and may miss or misread details. Always check the official documents before you bid.

Documents14

Grouped by what each file is for

Addenda and clarifications4Changes and answers issued after release. Check these first.
Scope and specifications1What is being bought: the work, standards and requirements.
Forms to return2Fill these in and send them back with your response.
Pricing2Where your prices and rates go.
Contract and conditions2The contract you would sign and its terms.
Other documents3Everything else attached to this tender.
1 potential contact foundLocked
Auto-detected from the tender listing & documents. Verify before relying on them.

Similar open tenders10

Similar awarded contracts8

Likely value $800K to $4.2M

Agency spend history

Rottnest Island Authority

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