S.D. Codified Laws § 9-41-2
To pay the cost of the improvement, expansion, reconstruction, and operation of telephone lines or facilities, every municipality may borrow money and issue negotiable bonds, without pledging or using the credit of the municipality. All bonds shall be authorized, issued, and sold as provided in chapter 6-8B. Bonds issued pursuant to this section may be payable solely from the revenue or income derived from the operation of the facilities that were constructed, expanded, or improved. The municipality may, in a resolution or ordinance authorizing the bonds, provide that all or any portion of the revenue or income from the facilities to be constructed, expanded, or improved, or any part thereof, shall be segregated from the other revenue or income of the facilities, and that only the segregated portion of the revenue or income shall be used for the payment of such bonds. The municipality may establish a special charge or surcharge for the services of the facilities financed by the bonds. However, the municipality shall obtain Public Utilities Commission approval before establishing a special charge or surcharge on any services which are regulated. If the bonds are payable solely from such segregated revenue or income, no election is required to authorize the issuance of the bonds, unless required by S.D. Const., Art. XIII, § 4.
SDCL 9-41-2