South Bow settles 2022 Kansas spill for $26.9m, commits $40m to safety
Pipeline operator South Bow will pay a $26.9m penalty and invest $40m in safety upgrades to resolve federal and state claims over the largest US onshore crude spill in nine years, a legacy liability inherited from TC Energy.
South Bow has agreed to a $26.9m civil penalty and roughly $40m in preventative measures to settle US government and Kansas state claims stemming from a December 2022 pipeline rupture. The breach dumped nearly 13,000 barrels of heavy Canadian crude into a Washington County creek. It was the largest onshore crude pipeline spill in the United States in nine years, exceeding the combined total of all 22 previous leaks on the Keystone system.
Under a proposed decree filed Friday in a Kansas federal court, South Bow will also pay the state more than $3m for environmental restoration. A judge must approve the settlement following a 30-day public comment period. The financial hit lands squarely on a company that TC Energy spun off as a separate entity in 2024, after the Kansas cleanup had concluded.
For investors, the immediate penalty is quantifiable, but the mandated $40m in future accident prevention represents an unbudgeted capital expenditure that will pressure near-term margins. Sara Hunter, a South Bow spokesperson, said the company “proactively” launched its response before receiving formal government directives, completing “comprehensive environmental remediation” in February 2024. She added that the operator has since conducted 12,000 miles of pipeline inspections and 400 excavations to check and repair infrastructure. “This work reflects our ongoing commitment to the safe, reliable operation of our pipeline system and to continuously strengthening pipeline integrity,” Hunter said.
The EPA’s enforcement chief, Jeffrey Hall, noted the spill “blanketed land and water, rendering the waterway lifeless and useless,” adding that the penalty matched the severity of the harm. While no pipeline workers or residents were injured and public water supplies remained safe, the government's complaint highlighted significant ecological damage. More than 2,700 animals were harmed or killed, including an endangered species, the long-eared bat.
A separate engineering report cited in the court complaint found the pipeline bend had been “overstressed” since installation in 2010 due to improperly compacted soil. Despite re-excavating the site in 2013, the company did not replace that section of pipe, exposing a historical maintenance oversight.
The settlement underscores the enduring operational risks tied to the 2,689-mile Keystone system, which transports thick tar sands oil to refineries in Illinois, Oklahoma and Texas. These legacy liabilities carry fresh relevance as South Bow pursues new infrastructure. In April, the Trump administration granted the company and a partner approval to build a new, smaller pipeline from Canada to Wyoming. That project is a direct successor to the $8bn Keystone XL, which the Biden administration blocked in 2021 over environmental concerns.
