The Bay of Plenty Regional Council is prosecuting Mobil Oil New Zealand in relation to the oil spilled in Tauranga Harbour earlier this year.
About 1500 litres of heavy fuel oil leaked into Tauranga Harbour on April 27. Oiled debris and wildlife washed up on beaches days after the event, costing more than $800,000 to clean up.
Read more: Oil spill in Tauranga Harbour
The first call for the prosecution will be at Tauranga District Court on November 26.
Mobil country manager Andrew McNaught said yesterday: "Mobil apologises for the incident. We deeply regret that it occurred and the impact it had on the community.