Must I sort my waste?
Yes, sorting waste is a legal obligation for households, in all three regions. You must keep glass, paper/cardboard, PMD and bio/organic waste separate, with only the genuine residual going in the residual bag. Since the expansion of the PMD bag (around 2019–2021), all plastic packaging goes in it (tubs, tubes, films), not just bottles. Separate kitchen/bio-waste collection is now mandatory: in Flanders since 1 January 2024 (some municipalities got a postponement until 1 January 2026 at the latest), in Wallonia since 1 January 2024, in Brussels since 15 May 2023 (orange bag). The basis is EU Directive 2018/851. Wrongly sorted bags get a refusal sticker and are left behind; you must re-sort and present them again. Anyone who persistently refuses to sort or fly-tips waste risks a fine.
📋 The rules
- Sorting is mandatory: glass, paper/cardboard, PMD, bio/organic — only residual in the residual bag
- In the PMD bag: all plastic packaging (tubs, tubes, films), empty and clean, caps on the bottle
- Bio/kitchen waste separate: Flanders since 2024 (postponement until 1/1/2026 at latest), Wallonia since 2024, Brussels since 15/5/2023
- Hazardous waste, electricals and textiles to the recycling park or the designated collection
- Wrongly sorted = refusal sticker; you must re-sort and present again
- Depositing next to the container or presenting at the wrong time can count as fly-tipping
🔓 Exceptions
- Home composting of bio-waste can replace separate collection where it is allowed
- Some Flemish municipalities got a postponement for bio-waste collection until 1 January 2026 at the latest
- Hazardous waste, electrical appliances and textiles do not belong in the household bag, but at the recycling park or the designated collection
⚠️ Penalties & fines
The first sanction is practical: a wrongly sorted bag gets a refusal sticker and simply stays on the pavement. You have to re-sort it and present it again, and a bag left lying can count as fly-tipping. Then comes the wallet. Wrong sorting and fly-tipping are tackled mainly through GAS fines: the statutory maximum is 350 euros for adults and 175 euros for minors, though many municipalities set lower rates. In Brussels the administrative fines run around 75 euros for not sorting and 100 to 125 euros for glass in the wrong bag.
📎 Official sources
- OVAM · sorting kitchen waste →
- Fost Plus · PMD sorting rules →
- Brussels Environment · bio-waste sorting mandatory →
❓ Frequently asked
Is sorting really mandatory?
Yes. In all three regions households must separate glass, paper/cardboard, PMD and bio-waste; only genuine residual waste goes in the grey bag. Wrong sorting earns a refusal sticker, and can cost you a fine.
What can go in the PMD bag?
Since the expansion, all plastic packaging goes in the blue PMD bag: bottles, pots, tubes and films, along with metal packaging and drink cartons. Empty and rinse everything, and leave the caps on the bottles.
Must I separate my kitchen waste?
Yes. Bio-waste and food waste go separately: in Flanders since 2024 (some municipalities got a postponement until 1 January 2026 at the latest), in Wallonia since 2024 and in Brussels since 15 May 2023, in the orange bag.
What happens to a wrongly sorted bag?
It gets a refusal sticker and is not taken away. You have to re-sort it yourself and present it again at the next collection; leave it lying and that can count as fly-tipping. Re-sorting is on you, not on the collector.
What do I risk if I do not sort?
For persistent wrong sorting or fly-tipping, a GAS fine of up to 350 euros for adults (175 euros for minors). In Brussels, administrative fines of around 75 euros apply, and 100 to 125 euros for glass in the wrong bag.
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