The rate dropped from 44.3% in 2024, Sepa reported. The share of waste sent to incineration remained broadly steady at 82%, while the amount sent to landfill fell by 10%. A total of 2.31 million tonnes of household waste was generated in 2025, down just 1,500 tonnes from the previous year.
Recycling rates varied widely by local authority. South Ayrshire residents recycled 55% of their waste, compared with 26% in Glasgow and 18.2% in Orkney, the lowest figure recorded.
The figures do not reflect the full impact of long-term repairs to the Glasgow Recycling and Renewable Energy Centre in Polmadie, which was shut down in April 2026, diverting waste to other incinerators or landfill. The centre is operated by Viridor, along with a facility at Dunbar.
Karen MacCormick of Viridor said incineration with energy recovery is a more sustainable option than landfill. "When it's in landfill you've got the landfill gasses, you've got methane, etc. This is a more sustainable way of dealing with the waste, coming through an energy recovery facility, and obviously we can create something at the end of it which is low carbon energy going straight to the grid," she said.
Sepa's chief scientific officer, Dr Richard Allan, described the figures as highlighting an "ongoing challenge". He said: "It's clear that where waste ends up is important, but we need to focus on preventing waste in the first place and recycling more of that material when it is produced."
Kim Pratt, senior circular economy campaigner at Friends of the Earth Scotland, called it a "shocking decline" and said Scotland had "lost its way". She said recycling levels had stalled since the Scottish government encouraged a new generation of waste incinerators, meaning "household waste which could have been recycled is being burned instead".
A deposit return scheme for bottles and cans, which has boosted recycling rates in other countries, has been repeatedly delayed. A landfill ban originally due at the start of 2026 has been effectively delayed to 2028. The Scottish government has been approached for comment.