SDCL § 49-34A-10: Tariffs and schedules filed by utilities--Public inspection.

Pursuant to rules promulgated under chapter 1-26 by the Public Utilities Commission, every public utility shall file with the commission, within such time and in such form as the commission may designate, tariffs and schedules showing the terms and conditions of service and all rates established by the public utility and collected or enforced, or to be collected or enforced, within the jurisdiction of the commission. The public utility shall keep copies of such tariffs and schedules open to public inspection under such rules as the commission may promulgate. Schedules and tariffs approved by the commission have the force and effect of law.