All community and non-transient non-community PWS systems are required to have certified operators in accordance with OAC 252:710 "Waterworks and Wastewater Works Operator Certification" of DEQ.

Added at 17 Ok Reg 1987, eff 6-12-00

Amended at 18 Ok Reg 1999, eff 6-11-01

Amended at 42 Ok Reg, Number 22, effective 9-15-25