Bin collections in Enfield could be cut from once a week to once a fortnight under proposals put forward by the council.
The changes – which include charging a fee to collect garden waste – are set out in a council report containing seven options for overhauling the service that could save the council up to almost £3m a year.
If the council approves the recommendations in the report, a consultation will be held with the public on whether to alter collections or stick with the status quo.
The current arrangements see refuse and dry recycling collected once a week, while mixed food and garden waste are collected once a fortnight.
But the council is under pressure to save £18m by 2020 due to a funding squeeze by central government – and cutbacks to bin rounds could help to meet that target.