64:01:01:52.  Effective date of rate changes. The effective date of rate changes for services covering a period starting before and ending after the statutory effective date shall be as follows:

          (1)  For a rate increase, the new rate shall apply to the first billing period starting on or after the effective date; and

          (2)  For a rate decrease, the new rate shall apply to bills rendered on or after the effective date.

          Source: 29 SDR 177, effective July 2, 2003.

          General Authority:SDCL 10-45-47.1(2), 10-46-35.1(2), 10-46A-19(2), 10-46B-18(2).

          Law Implemented:SDCL 10-45-30.1, 10-45-30.2.