Swansea Council has said that limiting the amount of residual waste that households can present for collection to three per fortnight has resulted in some 3,600 tonnes of waste being diverted from landfill.
The limit was introduced in April this year to reduce the amount of waste sent to landfill and encourage residents to recycle more.
Swansea said the decline in tonnage compared to the same period last year, before the three bag limit was introduced.
Mark Thomas, cabinet member for environment and transportation said: “Residents have been playing their part by sticking to the three-bag limit and making use of the kerbside recycling services.
“It’s great news to know that this has had a positive impact in terms of waste disposal in the city.”
Teams have also been visiting households during the year to pass on advice to residents about recycling.
In Swansea the recycling rate for 2013-14 was 52.8%. Based on current recycling performance the council anticipates the rate will increase to around 56% next year.