Okla. Stat. tit. 27A, § 27A-2-6-307: Investigations of sanitary quality of water

A. The Department may, of its own accord, investigate the

sanitary quality of water supplied to the public if the Department

has reason to believe that such water supply is prejudicial to the

public health or environment. Such investigation shall be made

whenever a complaint is made to the Department by the mayor of any

city, the president of the board of trustees of any incorporated

town or any other public entity including a public works authority,

or a rural water or sewage district, or by the Department's local

representative, about the sanitary quality of water supply within

their respective counties.

B. During such investigation, the person in charge of the water

supply shall furnish the Department all the information requested by

it relative to the source or sources from which the supply of water

is derived, and the manner of storage, distribution and purification

or treatment necessary or desirable for the determination of its

sanitary quality.