Okla. Admin. Code § 252:606-6-78
Public and Private Water Supply bacterial limitations apply at all times at a point of intake. However, for waters with the PBCR beneficial use, the PBCR bacterial requirements are more stringent during the recreation season and limitations developed under 252:606-6-86 apply. Permits for point source discharges of bacteria that are located less than five stream miles upstream of a water supply intake or discharges to a lake located within five miles of a water supply intake will include a total coliform MAL of 5000/100 mL expressed as a geometric mean and a DML of 20,000/100 mL. The limit does not apply to discharging lagoons in compliance with OAC 252:656-11-2(b) unless Water Quality Standards are violated.
Okla. Admin. Code § 252:606-6-78