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Stormwater Compliance Certificate

The Australian Stormwater Compliance Certificate is issued by a licensed plumber following the installation or alteration of a stormwater drainage system, confirming compliance with AS/NZS 3500.3 (Stormwater Drainage) and the relevant local council and state requirements. Stormwater compliance is increasingly important in Australian states with mandatory WSUD (Water Sensitive Urban Design) requirements, and the certificate links the installation to any council Development Approval (DA) or Complying Development Certificate (CDC) reference.

AS/NZS 3500.3:2018 (Stormwater Drainage), state plumbing legislation, local council DA/CDC conditionsValid: No fixed expiry — attached to the installation

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Sample Stormwater Certificate certificate

Sample Stormwater Compliance Certificate certificate created with CertBox, showing the professional PDF layout with property address, client details, and council/approval reference, description of stormwater works undertaken, materials used and pipe sizes

Sample Stormwater Certificate with fictional data. All personal details shown are fake.

What it covers

  • Property address, client details, and council/approval reference
  • Description of stormwater works undertaken
  • Materials used and pipe sizes
  • Test results (water test, CCTV report reference if applicable)
  • Compliance with AS/NZS 3500.3
  • Plumber licence number and signature

Who needs a Stormwater Certificate?

Licensed plumbers installing stormwater systems
Builders and developers on new constructions
Homeowners with new drainage under a DA or CDC
Landscapers working on stormwater infrastructure

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Frequently asked questions about Stormwater Certificate

What is a council / DA reference and do I need one on a stormwater certificate?
A DA (Development Approval) or CDC (Complying Development Certificate) number is the local council's consent reference for the building works. Where stormwater work is part of an approved development, the DA or CDC number should appear on the compliance certificate to link it to the approval. Not all stormwater work requires a DA — minor maintenance typically does not.
Does stormwater work need to be reported to the council in Australia?
In many Australian states, a plumbing compliance certificate for stormwater work is required to be issued to the client and, in some cases, lodged with the local council or state authority as part of the building approval close-out process. Requirements vary by state and council.
What is WSUD and why does it affect stormwater compliance?
Water Sensitive Urban Design (WSUD) is a planning and design approach that integrates stormwater management into the built environment to protect water quality and reduce runoff. Many Australian councils now require WSUD elements (such as rainwater tanks, permeable paving, or bio-retention systems) as conditions of DA approval, and these must be documented on the compliance certificate.

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