Pennsylvania regulators have documented a significant uncontrolled shale-gas well incident at Infinity Natural Resources’ Cooper 7H well pad in Young Township, Indiana County. The event began during hydraulic-fracturing/completions operations on August 16, 2026, when DEP says the well casing split and large quantities of fracking flowback water escaped the well.
The Pennsylvania DEP now estimates approximately 336,000 gallons of flowback water were released. Secondary containment was overwhelmed, contaminated water left the pad, and an undetermined quantity entered Whiskey Run. DEP says the potentially affected area could extend across roughly 37 acres and that a large-scale remediation effort will be required.
Multiple fire departments from Indiana, Armstrong, Allegheny and Westmoreland counties supported the emergency response while specialized well-control crews worked to regain control. Firefighters supplied large volumes of water for a water curtain around the uncontrolled well. No fatalities or serious injuries were identified in the reports reviewed.
Current status: the immediate uncontrolled-well emergency was brought under control, but environmental cleanup and monitoring remain ongoing. DEP has issued multiple violations and required the operator to address remediation and continue monitoring Whiskey Run. The 336,000-gallon estimate and environmental impacts are regulator-documented, while the exact quantity that entered the stream remains undetermined.
Incident classification: major upstream well-control failure / significant contaminated-water release / surface-water impact.