Mont. Code Ann. § 75-5-512
A municipality or other entity operating a sewage system may retain the amounts of the revenues derived from the payment of costs by industrial users of its treatment works services and expend such revenues, together with interest thereon, for:
History: En. Sec. 14, Ch. 455, L. 1975; R.C.M. 1947, 69-4808.4(3).