WVC 11 - 15 B- 22
§11-15B-22. Effective date of rate changes for certain services.
The effective date of rate changes for services covering a
service period starting before and ending after the statutory
effective date is as follows:
(1) For a rate increase, the new rate applies to the first
billing period starting on or after the effective date.
(2) For a rate decrease, the new rate applies to bills
rendered on or after the effective date.