A proposed consent decree filed in U.S. District Court in Kansas requires South Bow to pay $26.9 million in civil penalties and spend approximately $40 million on prevention measures plus more than $3 million for Kansas environmental restoration following a December 2022 spill of nearly 13,000 barrels of heavy crude oil in Washington County. The spill, the largest onshore crude pipeline release in the United States in nine years, exceeded the combined volume of the system's prior 22 incidents. The agreement remains subject to judicial approval after a 30-day public comment period.