Mont. Code Ann. § 75-20-405
An owner of an interest in real property who obtains all or part of the owner's supply of water for domestic, agricultural, industrial, or other legitimate use from a surface or underground source may sue a person to recover damages for contamination, diminution, or interruption of the water supply proximately resulting from the operation of a facility. The remedies enumerated in this section do not exclude the use of any other remedy that may be available under the laws of the state.
History: En. Sec. 19, Ch. 327, L. 1973; amd. Sec. 19, Ch. 494, L. 1975; R.C.M. 1947, 70-819(3); amd. Sec. 2508, Ch. 56, L. 2009.