TL;DR
A defensible diversion number needs weight, not volume, and documentation from the facility, not the hauler's estimate. Most facility teams discover the gap when someone outside the building asks for the supporting tickets.
Waste is one of the easier metrics to report and one of the easiest to get wrong. The difference between a number you can defend and a number you cannot is entirely in the paperwork behind it.
Decide What Gets Measured
Before collecting anything, define the boundary. A diversion figure without a stated scope is not comparable to anything, including your own prior year.
Write down:
- Which sites are included, and whether partial-year sites are prorated
- Whether tenant-generated waste counts in a multi-tenant building
- Whether construction debris is included or reported separately
- Whether food waste, organics, electronics, and hazardous streams are in scope
- The reporting period and whether it is calendar or fiscal
- The unit of measure, ideally short tons or pounds throughout
Construction debris deserves particular care. It is heavy, it is often highly recyclable, and including it can move a diversion rate by many points in either direction. Whichever you choose, state it and stay consistent. See construction debris diversion rates for how that stream behaves.
Weight Tickets and Manifests Are the Evidence
The credibility of your number lives in the source documents, not in the spreadsheet.
Collect and keep:
| Document | What it proves |
|---|---|
| Scale house weight ticket | Actual tonnage delivered to a facility |
| Facility receipt or acceptance record | Which facility received the material |
| Recycling processor report | Tonnage by commodity accepted |
| Donation receipt | Items diverted through reuse |
| Certificate of destruction | Secure disposal, and whether material was recycled after |
| Hauler service report | Ties each event to a site and date |
Volume estimates in cubic yards are useful for operations and weak for reporting. Conversion factors vary enormously by material, so a cubic yard of cardboard and a cubic yard of demolition debris are not comparable. Where you must convert, document the factor and its source. Ask for tickets attached to invoices as a standing requirement, since retrieving them months later is difficult.
The Diversion Rate Formula
The arithmetic is simple. The judgment is in what goes into each bucket.
Diversion rate equals diverted weight divided by total waste weight, expressed as a percentage. Diverted weight normally includes recycled, composted, donated, and reused material. Total weight includes everything, diverted plus landfilled.
Where teams go wrong:
- Counting material sent to a processor rather than material the processor accepted, which ignores contamination rejects
- Including incineration or waste-to-energy in diversion without disclosing it, since frameworks treat it differently
- Mixing volume-derived and weight-derived figures in one total
- Omitting a stream entirely, which inflates the rate by shrinking the denominator
- Counting donated items at an estimated weight with no basis
Report the method alongside the number. A stated 62 percent with a clear method is more useful, and more defensible, than a higher figure nobody can reproduce. Our page on how diversion rates are calculated walks through the same math, and what percentage of junk gets recycled gives industry context.
What to Require From Vendors
Vendors cannot supply data they were never asked for. Put the requirement in the contract, not in an email after year-end.
Require:
- Weight by site, by month, in a consistent unit
- Split by disposition: landfilled, recycled, composted, donated, reused
- Named downstream facility for each stream
- Supporting weight tickets or facility receipts attached to invoices
- A stated methodology for any figure that is estimated rather than weighed
- Donation receipts with item counts
- An annual summary in your format, and data handover on contract exit
Ask each bidder how their diversion figures are derived. There is a real difference between measured tonnage from scale tickets and a percentage applied from a company average. Both may be honest; only one is auditable. Build this into writing the vendor RFP so it is scored rather than assumed.
What Better Reporting Costs
Current Market Reality
| Reporting element | Typical effect on cost |
|---|---|
| Standard service with no reporting | Baseline rate |
| Weight tickets attached to invoices | Usually no charge |
| Monthly site-level diversion reporting | A small percentage above baseline |
| Source-separated collection streams | A larger percentage above baseline |
| Third-party verification support | A separate yearly cost |
Reporting adds administrative cost, and source separation adds handling and sometimes extra containers or trips. Against that, sorted loads often tip cheaper than mixed loads, so a well-designed separation program can partially fund itself. Tipping fees and fuel have risen across the board. Ask vendors to quote the reporting package as a separate line rather than folding it into the rate, so you can see what the data is actually costing.
Keeping Records Audit-Ready
Whether your figures feed an internal target, a certification submission, a lender requirement, or a public disclosure, the retention habits are the same.
Practical habits:
- Store by period, not by vendor. Auditors ask for a quarter, not a company.
- Keep the source document with the summary line. Each row should link to its ticket.
- Record every methodology decision with a date. Scope changes are fine; undocumented ones are not.
- Reconcile monthly. A missing ticket found in month two is trivial; in month eleven it is not.
- Retain for the period your framework requires. Ask your compliance contact.
If your organization is pursuing a certification or reporting to an external framework, the specific requirements for waste data, boundaries, and verification come from your compliance, sustainability, or legal contact and from the framework's own current documentation. Do not adopt a threshold or definition from a vendor's marketing material. Get the requirement first, then build the data collection to match it.
FAQ
How is a waste diversion rate calculated?
Divide diverted weight by total waste weight and express it as a percentage. Diverted material typically includes recycled, composted, donated, and reused tonnage. State your scope and method alongside the number so it can be reproduced.
Should diversion be measured by weight or volume?
Weight. Volume estimates vary enormously between materials, so cubic yards are not comparable across streams. Where a conversion from volume is unavoidable, document the factor used and its source.
What documentation supports a diversion claim?
Scale house weight tickets, facility acceptance records, processor reports by commodity, donation receipts, and hauler service reports tying each event to a site and date. Require tickets attached to invoices rather than available on request.
Should construction debris be included in facility diversion reporting?
Either choice is defensible if stated. Construction debris is heavy and often highly recyclable, so including it can shift the rate substantially. Many organizations report it as a separate line so operational and project waste can be compared year over year.
What should we require from a hauling vendor for ESG data?
Monthly weight by site split by disposition, named downstream facilities, supporting tickets, a stated methodology for estimated figures, donation receipts, an annual summary in your format, and data handover at contract exit.
Getting It Hauled Away
Reportable diversion is a documentation practice with a truck attached. Otesse junk removal can take it from there; ask what documentation your waste reporting needs. Enter your ZIP in the price box to see which services are available at your address.
Send your reporting requirements with your site list and we will put together a quote that includes the data package.