Grease Trap Compliance Certificates: What They Are and Why You Need Them

Understanding Grease Trap Compliance Documentation For Melbourne food service businesses, maintaining proper compliance documentation is just as important as the physical cleaning of your grease trap. Without the right paperwork, even a spotlessly maintained grease trap won’t save you from penalties during a water authority audit or EPA Victoria inspection.

This guide explains the key compliance certificates and documents every Melbourne business needs, how to obtain them, and how to keep them organised for stress-free audits. For a broader overview of your regulatory obligations, see our complete EPA grease trap regulations guide.

Waste Transport Certificates (WTCs) The Waste Transport Certificate is the single most important compliance document for grease trap maintenance. Under EPA Victoria’s waste tracking requirements, a WTC must be generated for every grease trap pump-out conducted at your premises.

What a Waste Transport Certificate Contains A valid WTC includes the following information:

Producer details — Your business name, address, and EPA registration number Transporter details — The licensed waste transporter’s name, vehicle registration, and EPA transport licence number Waste description — Type and quantity of waste removed (e.g., grease trap waste, litres removed) Collection date and time — When the pump-out was performed Destination facility — The licensed receiving facility where the waste will be processed or disposed of Signatures — Both the producer (your business) and the transporter must sign Your Legal Obligations As the waste producer, Melbourne businesses must:

Ensure a WTC is completed for every grease trap pump-out — no exceptions Verify that the transporter holds a current EPA transport licence Retain copies of all WTCs for a minimum of three years Make WTCs available for inspection by your water authority, EPA Victoria, or local council upon request Report any discrepancies or missing certificates to EPA Victoria Failing to produce WTCs during an audit is treated as a compliance failure, even if your grease trap was actually cleaned on schedule. The documentation is the proof.

Plumber’s Compliance Certificates When a grease trap is first installed or significantly modified, the installing plumber must issue a compliance certificate confirming that the work meets all relevant standards, including:

AS 4674-2004 (Construction of vessels for on-site treatment) AS/NZS 3500 (Plumbing and drainage) Local council and water authority requirements VBA (Victorian Building Authority) regulations This certificate is required as part of your trade waste agreement application and must be retained permanently. If you’ve lost your original installation certificate, your plumber or the VBA may be able to provide a replacement.

Maintenance and Service Records Beyond WTCs, maintaining detailed service records demonstrates proactive compliance management. A thorough maintenance record for each service visit should document:

Date of service — When the pump-out or inspection occurred FOG measurements — The measured depth of the FOG layer and settled solids, expressed as a percentage of total liquid depth Total waste volume — Litres of waste removed during the pump-out Trap condition — Any observations about the trap’s physical condition, including baffle integrity, inlet/outlet condition, and lid seal Recommendations — Any maintenance or repair recommendations from the service technician Technician details — Name and licence number of the person performing the service Our compliance documentation guide explains the records to keep for every service visit, so you always have complete, audit-ready documentation.

Water Authority Inspection Reports When your water authority conducts a trade waste inspection at your premises, they’ll provide an inspection report. This report typically covers:

Grease trap condition assessment FOG level measurement at the time of inspection Review of your maintenance records and WTCs Assessment of your kitchen waste management practices Any compliance issues identified Required corrective actions and deadlines Keep every inspection report filed with your other compliance documents. If corrective actions are required, document the steps you’ve taken to address them — this demonstrates good faith compliance to future inspectors.

Preparing for a Compliance Audit Water authority audits can be scheduled or unannounced. Being audit-ready at all times is far less stressful than scrambling to find paperwork when an inspector arrives. Here’s how to prepare:

Organise Your Document File Maintain a dedicated compliance file — physical, digital, or both — containing:

Your current trade waste agreement Grease trap installation certificate (plumber’s compliance certificate) AS 4674 compliance documentation All Waste Transport Certificates from the past three years Service and maintenance records Previous inspection reports and evidence of corrective actions Staff training records related to FOG management Conduct Self-Audits Periodically review your own documentation to identify gaps before an inspector does. Check that:

Every pump-out has a corresponding WTC WTCs contain all required information and signatures Your cleaning schedule meets the frequency specified in your trade waste agreement FOG measurements on recent WTCs show levels below 25% Your grease trap is in good physical condition Know Your Agreement Conditions Re-read your trade waste agreement at least annually. Make sure you understand every condition and that your current practices meet each requirement. Conditions can be updated by your water authority, so ensure you’re working from the latest version.

Digital vs. Paper Records Both EPA Victoria and Melbourne’s water authorities accept digital records, provided they meet authenticity and retention requirements. Digital record-keeping offers several advantages:

Accessibility — Records can be retrieved instantly during an inspection Backup — Cloud storage protects against loss from fire, flood, or theft Organisation — Digital systems make it easy to sort, search, and review records Sharing — Records can be shared electronically with inspectors or auditors Ask your contractor for a complete digital record of every service, including photographs, measurements, and Waste Transport Certificates. Many contractors email copies after every visit, and some offer an online portal with your full service history.

What to Do If You’re Missing Documentation If you discover gaps in your compliance records, take action immediately:

Contact your service provider — They should have copies of WTCs and service records Contact EPA Victoria — They maintain a waste tracking database that may have records of your WTCs Request copies from the receiving facility — The licensed waste processing facility also retains WTC copies Document the gap — If records truly cannot be located, document your efforts to find them and implement processes to prevent future gaps Going forward, ensure your grease trap pump-out provider delivers WTCs and service records promptly after every visit. Review our regulations page for a complete summary of documentation requirements and retention periods.