Sustainability reporting has moved from a voluntary exercise for large corporations to a practical requirement for businesses of all sizes. Investors, customers, regulators, and tendering bodies increasingly expect companies to demonstrate their environmental performance with data, not just intentions. Waste is one of the most tangible and measurable components of any sustainability report, yet many businesses struggle to collect reliable waste data.
This guide covers the reporting frameworks relevant to Australian businesses, what waste data to collect, how to get it from your providers, and how to turn raw numbers into meaningful reporting.
Why Waste Data Matters for ESG and Sustainability Reporting
Environmental, Social, and Governance (ESG) reporting has become a standard expectation across Australian business. Listed companies face mandatory climate-related disclosure requirements. Large private companies are increasingly asked for ESG data by banks, insurers, and major clients. Even SMEs encounter sustainability questions in tender processes and supply chain assessments.
Waste data is particularly important because:
- It is quantifiable - unlike some environmental metrics, waste can be measured in tonnes, kilograms, or cubic metres with reasonable accuracy
- It links to carbon - waste disposal, particularly to landfill, generates measurable greenhouse gas emissions that feed into carbon footprint calculations
- It demonstrates action - tracking diversion rates over time shows tangible progress, which is more credible than general sustainability statements
- It reveals cost savings - waste reduction directly reduces costs, making it one of the few sustainability areas where environmental and financial outcomes align cleanly
Australian Reporting Frameworks
National Greenhouse and Energy Reporting (NGER)
The NGER scheme is Australia's primary mandatory environmental reporting framework, administered by the Clean Energy Regulator. It applies to corporations that meet specific thresholds for greenhouse gas emissions, energy production, or energy consumption.
Under NGER, waste-related emissions fall under scope 1 (for businesses that operate landfills) or scope 3 (for businesses that send waste to third-party disposal facilities). If your business meets the NGER reporting threshold, you need accurate data on waste volumes by disposal method to calculate associated emissions using the National Greenhouse Accounts Factors.
Even if your business falls below NGER thresholds, the framework provides a useful methodology for calculating waste-related emissions voluntarily.
NABERS Waste
The National Australian Built Environment Rating System (NABERS) includes a waste rating tool for commercial buildings. NABERS Waste rates a building's waste management performance on a scale of 1 to 6 stars, based on total waste generation and diversion rates.
For businesses occupying commercial office space, a NABERS Waste rating may be relevant, particularly if your landlord or building manager is pursuing a rating. Contributing accurate waste data from your tenancy supports the building's rating and demonstrates your own waste performance.
NABERS Waste requires data on total waste generated (by weight), waste diverted to recycling and recovery, and waste sent to landfill. This data is typically collected from waste provider reports and weigh bridge tickets.
International Frameworks
GRI 306: Waste
The Global Reporting Initiative (GRI) is the most widely used sustainability reporting framework internationally. GRI 306 (revised 2020) specifically addresses waste and requires organisations to disclose:
- Total weight of waste generated
- Waste diverted from disposal, broken down by recovery operation (recycling, composting, other recovery)
- Waste directed to disposal, broken down by disposal operation (landfill, incineration, other disposal)
- Significant impacts related to waste, and actions taken to manage those impacts
GRI 306 emphasises upstream thinking: not just managing waste outputs, but addressing waste generation through circular economy approaches. If your business reports under GRI, you need waste data broken down by both stream (what the material is) and destination (what happens to it).
TCFD and ISSB
The Task Force on Climate-related Financial Disclosures (TCFD) framework and its successor, the International Sustainability Standards Board (ISSB) standards, focus on climate-related risks and opportunities. Waste is relevant under these frameworks primarily through its contribution to greenhouse gas emissions (scope 3, category 5).
Australian companies subject to mandatory climate disclosure under the Treasury's climate-related financial disclosure requirements will need to report scope 3 emissions, which includes waste. Accurate waste data, including disposal method, is essential for calculating these emissions correctly.
What Waste Data to Collect
Regardless of which framework you report under, the core waste data you need is consistent. Collect and track these metrics:
- Total waste generated - measured in tonnes or kilograms per month. This is the total volume of all waste leaving your site, across all streams
- Waste by stream - break down your total into categories: general waste (landfill), commingled recycling, cardboard/paper, organic waste, hazardous waste, e-waste, and any specialist streams
- Disposal method - for each stream, record the destination: landfill, recycling (materials recovery), composting, energy recovery, or other
- Diversion rate - the percentage of total waste diverted from landfill. Calculate as: (total waste minus landfill waste) divided by total waste, multiplied by 100
- Weight vs volume - reporting frameworks generally require weight data (tonnes). If your provider reports in volume (cubic metres or bin lifts), you will need conversion factors. Standard conversion factors are available from Sustainability Victoria
How to Get Data from Waste Providers
The quality of your waste reporting depends on the quality of data from your waste management providers. Here is how to get what you need:
Request monthly reports
Most commercial waste providers can supply monthly reports showing collection dates, bin sizes, number of lifts, and estimated or actual weights. If your provider does not routinely supply reports, request them. It is a standard service expectation for commercial accounts.
Ask for weight-based data
Volume-based data (number of bin lifts) is less accurate than weight-based data for reporting purposes. Some providers use weigh-bridge data for larger bins and skip bins. For smaller bins, weight is typically estimated using standard conversion factors. Ask your provider which method they use and request actual weight data where available.
Confirm disposal destinations
Your compliance obligations and emissions calculations depend on knowing where your waste actually goes. Ask your provider to confirm the destination facility for each waste stream. This is particularly important for recycling, as some providers may send materials to different facilities with different recovery rates.
Request certificates of disposal
For hazardous waste and regulated waste streams, certificates of disposal or recycling certificates provide documented proof of proper management. These are essential for compliance and useful for sustainability reporting.
Tracking Diversion Rates
Your diversion rate is the single most important waste performance metric. It tells you what proportion of your waste is being recovered rather than landfilled, and it provides a clear trend line over time.
A typical progression for a Melbourne business actively managing its waste:
- Starting point - 10 to 25 per cent diversion (most waste going to general waste bins)
- After basic separation - 35 to 50 per cent diversion (cardboard and recycling separated)
- With organics diversion - 50 to 65 per cent diversion (food and organic waste separated)
- Optimised programme - 65 to 80 per cent diversion (all viable streams separated, contamination minimised)
Track your diversion rate monthly and report it quarterly or annually. A consistent upward trend demonstrates genuine progress and provides a credible narrative for sustainability reports.
Setting and Reporting Against Targets
Reporting frameworks and stakeholders expect not just current performance data, but targets and progress against them. When setting waste targets for your reduction plan:
- Use your baseline data as the starting point
- Set targets that are ambitious but achievable within your operational context
- Align with Victorian Government targets where relevant (80 per cent diversion by 2030)
- Include both absolute targets (reduce total waste by X tonnes) and intensity targets (reduce waste per unit of production, per employee, or per square metre)
- Report progress annually, including explanation of any variance from targets
Common Data Challenges
Collecting reliable waste data is harder than it sounds. Common challenges include:
- Multiple providers - businesses using different providers for different waste streams need to consolidate data from multiple sources, often in different formats
- Estimated vs actual weights - many providers estimate weights based on bin size and assumed fill levels. These estimates can be inaccurate by 20 to 40 per cent
- Shared facilities - businesses in shared buildings or precincts may not have individual waste data, only building-level totals that need to be apportioned
- Inconsistent reporting periods - providers may report on different cycles (monthly, quarterly, per invoice), making consolidation difficult
- Lack of disposal destination data - some providers do not routinely disclose where waste goes after collection, making emissions calculations and diversion claims difficult to verify
The best way to address these challenges is to establish clear data requirements in your waste management contracts. When selecting or renegotiating with providers, specify the reporting format, frequency, and data points you require.
How a Waste Partner Simplifies Data Collection
One of the practical benefits of working with a waste partner is consolidated reporting. When you have multiple waste streams with multiple providers, a partner manages those relationships and can provide a single, unified report covering all your waste data.
Bundle Waste provides clients with consolidated waste reports that include volume and weight data by stream, diversion rates, cost breakdowns, and trend analysis. This data is formatted for direct use in sustainability reports and ESG disclosures, saving the time and effort of manually consolidating information from multiple providers.
If your business needs better waste data for sustainability reporting, or if you are setting up reporting for the first time, our free waste audit is a practical starting point. It establishes your baseline data and identifies the reporting improvements available to your business.
