EPA Region 6 issued an Administrative Order (AO) under its authority pursuant to Section 309 of the Clean Water Act (CWA) to Perdure Petroleum, LLC (Respondent) located in Shidler, Osage County, Oklahoma. The AO was issued for an unauthorized discharge of brine and produced water to a water of the U.S. The AO orders Respondent to: 1) immediately cease all discharges of pollutants from the facility; 2) remove all pollutants from the flow path located between the point of discharge at and near the facility and the tributary of Beaver Creek and other downstream water bodies; and 3) And, remove sufficient amounts of pollutants from the tributary of Beaver Creek and other downstream water bodies, which were discharged from the facility on or about February 20, 2020, so that the Total Dissolved Solids (TDS) downstream of the discharge is at or below background TDS. Respondent must respond to EPA within thirty days of receipt of the AO.