Okla. Stat. tit. 11, § 11-37-207: Costs of district sewer and water distribution lines

The costs of district sewers and district water distribution

lines, including mains and submains properly included in the

district, shall be assessed and collected as hereinafter provided.

The municipality shall incur no liability for building district

sewers, except when the municipality is the owner of a lot within

the district, and in that case the municipality shall be liable for

the costs of the sewer in the same manner as other property owners

within the district.