The WRAP commercial and household waste/recycling ‘apportionment tool’ assists local authorities to calculate the proportion of waste and recycling when it is co-collected on the same vehicle.

Key points
  • Provide consistency in the approach used by local authorities to apportion tonnages
  • Improve the accuracy of data
  • Assist with budgeting and service development


The tool was developed in conjunction with a steering group which included representatives from NAWDO, Larac, Defra and the Environment Agency/Natural Resources Wales.

It has been designed to be simple to use, local authorities only need to input how many bin lifts are made - by size and material type.

The tool was tested by comparing it with actual dedicated round data which showed that it produces results which are not statistically different.

User guide

A user guide is available to support the use of the tool.


Introduction >>
Background and purpose of the guide >>
Tool development >>
Future development >>
Summary >>
How does the tool work? >>
Worked Example >>
Advantages >>
Limitations >>
Updating or amending the tool >>
Data requirements >>
Minimum data requirements >>
What to do if a Local Authority does not have the minimum information >>
How to enhance data quality >>
Collection monitoring options >>
Approach to estimating use of sacks >>

Using the tool >>>

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  • WRAP-LA_apportionment_tool_userguide.pdf

    PDF, 417.12 KB