Glass recycling will resume on rubbish days from Monday but crates won't be collected if mixed with plastics and cans.

Hamilton residents will be able to get rid of their stockpiles of glass bottles when glass recycling resumes next week.

But cans, plastics and cardboard will still have to wait or be placed in black bags for landfill, as a Covid-19 risk remains for rubbish collectors.

Glass kerbside collections will resume in the city on different rubbish days from Monday, April 20, after a three-week break during alert level 4.

Residents are being asked to remove lids and rinse glass jars and bottles to put into their crates, but overfilled crates will not be emptied.

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Crates mixed with plastics or cans will not be emptied, as there are concerns Covid-19 might spread to staff if they have to sort recycling by hand, a Hamilton City Council statement said.

Infrastructure operations manager Eeva-Lisa Wright said she had heard reports residents were running out of room from stockpiling glass.

"Glass recycling accounts for 75 per cent of our weekly crate collections, so it's important we restart glass collections before lockdown restrictions are eased so we don't overwhelm our rubbish collectors and the refuse transfer station with excess quantities."

The way the collection will work, crates will be directly emptied into trucks so rubbish collectors do not have to handle individual items.

Rubbish bags will continue to be collected as normal.

Paper and cardboard will also be collected as normal but sent to landfill.

The Refuse Transfer Station and Recycling Centre on Lincoln St and the Hamilton Organic Centre remain closed to the public.