Waste is classified based on the physical properties of rubbish (rāpihi). Rubbish is sorted into categories (rōpū, wehenga) so that it can be disposed of in the most effective way.
Source separation is when the consumer sorts their rubbish into landfill and recyclable refuse. The transfer stations or recycling companies then sort (whakawehewehe) this material again according to the different properties such as colour.
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