No person, firm, partnership, or corporation, or any of the partners, officers, managers, or employees thereof, shall pollute or permit the pollution of the water supply of a municipality, or any stream, pond, spring, lake, or other water reservoir or groundwater aquifer, which is used or which is being held for use as a water supply by a municipality. A municipality may bring an action in the district court to enjoin any activity that will cause pollution of the water supply of a municipality whether or not such activity is regulated, licensed, or inspected. For the purposes of this section, the term pollution means contamination or other alteration of the physical, chemical, or biological properties of any natural waters of the state, or such discharge of any liquid, gaseous, or solid substance into any waters of the state as will or is likely to create a nuisance or render such waters harmful or detrimental or injurious to the health, safety, or welfare of the general public, or to domestic, commercial, industrial, agricultural, recreational, or other legitimate beneficial uses, or to livestock, wild animals, birds, or fish or other aquatic life.