Landfilling biodegradable municipal waste (food, paper, and garden waste), can contribute to environmental problems such as leachate production - liquid that drains or 'leaches' from a landfill.
It also releases methane, a potent greenhouse gas, which can contribute to climate change.
About the Landfill Allowances Scheme
The Landfill Allowances Scheme (Wales) Regulations 2004 (The LAS regulations) came into force in Wales on 1 October 2004 to reduce the amount of biodegradable municipal waste going to landfill sites.
The landfill allowances scheme requires waste disposal authorities in Wales to limit the amount of biodegradable municipal waste that they send to landfill.
The amount that they landfill must be below the allowance that the Welsh Government has allocated to avoid being liable to a penalty.
Landfill Allowances Scheme results
Wales has reduced the amount of biodegradable municipal waste (food, paper, and garden waste) sent to landfill by 80 per cent over the last eleven full years of the Landfill Allowances Scheme.
You can see the results from previous years in the 'Register of the Landfill Allowances Scheme (LAS) in Wales, 2004 onwards'.
Summary of 2015/16 results
Overall, Welsh local authorities sent 170,567 tonnes of biodegradable municipal waste to landfill compared to the 2015/16 Wales allowance of 410,000 tonnes. This is 58 per cent less than the allowance.
This clearly demonstrates work to reduce the amount of biodegradable waste being sent to landfill by local authorities is succeeding.
Individual local authority performance
Blaenau Gwent, Caerphilly, Cardiff, Carmarthenshire, Ceredigion, Denbighshire, Isle of Anglesey, Monmouthshire, Neath Port Talbot, Pembrokeshire, Torfaen, Vale of Glamorgan and Wrexham used the least amount of their allowances (no more than 40 per cent).
This contrasts with Gwynedd, Merthyr Tydfil and Swansea whom used over 75 per cent of their allowances.