A group of Christchurch residents has taken the owners of a recycling pit to the Environment Court.
The group says Owaka Holdings has breached a resource consent by increasing the size and scale of its operation.
Awatea Residents Association secretary Kay Stieller said the waste pile is so high it has become an eyesore.
The consent was issued in 1986 and requires that waste be no higher than the natural ground level of adjoining properties.
Mrs Stieller said the pile exceeds that condition by about eight metres.
The association has been forced to go to court because an application to the Christchurch City Council in 2009 got nowhere, she said.
Owaka Holdings has declined to comment until the case is over.