Maersk Oil, the former oil unit of shipping giant A.P. Moller-Maersk, was originally reported to the police by the Danish environmental protection agency in 2017.
Total bought Maersk Oil in a $7.45 billion deal the same year.
"The lack of compliance is both regrettable and unacceptable," a spokeswoman for Total told DR.
Danish police confirmed they had fined Total.
Total was not immediately available for comment.
(Reporting by Nikolaj Skydsgaard, Editing by Louise Heavens)