Waste management act states that no garbage, discarded machinery, vehicle, vessel or other item must be left in the nature. Furthermore, it is prohibited to release substances in a way that results in untidiness, disfiguring of scenery, dimishing pleasantness, danger of injury in people and animals, or other similar handicap or danger. Littering includes emission of liquid substances in nature.
Litterer's cleaning obligation and secondary cleaning obligation
A litterer must remove any trash or unclean substance from nature and otherwise clean the littered area. If a litterer remains unknown or is unreachable, or a litterer does not take care of his or her cleaning obligation, it is then the obligation of the land occupant to clean the littered area. If a use of a hiking trail or a snowmobile route causes littering, it is the duty of the route's upkeeper to clean the area. Also an organizer of a public event has a cleaning obligation if the surroundings are littered because of the event. The occupants of other areas than those that were mentioned have a cleaning obligation within the areas that have a valid general plan.
The environmental protection officer has a right to order clening for those who are under obligation.
Announcing littered areas
Anyone can announce a littered area or an illegal dump to the environmental protection officer or the police.