A Waiheke Island wine company has been found guilty of breaching noise limits, and could now be fined up to 600-thousand-dollars

It follows a protracted Auckland Council prosecution.

Cable Bay Wine tried to argue an acoustic expert who captured excessive noise readings did so on the vineyard's land and was trespassing, so evidence should be thrown out.

But a judge dismissed the argument and upheld the charge, and ruled the offence was serious in terms of effects on neighbours and the environment.