Okla. Stat. tit. 11, § 11-37-202: Public and district sewers - Public and district water

distribution lines.

In all municipalities where a system of public waterworks is

maintained and operated, or created, the municipal governing body

shall have power to cause a general sanitary, storm or combination

sewer system to be established, which shall be composed of two

classes of sewers: public and district sewers. The governing body

may also cause a water distribution system and water supply

facilities to be established composed of public and district water

distribution lines. Such systems may be created separately or in

conjunction with each other.