PA Oil & Gas Weekly Compliance Dashboard: Contaminated Groundwater Releases and 300 Abandoned Well Violations Reported

The Pennsylvania Department of Environmental Protection (DEP) reported multiple environmental incidents involving conventional oil and gas wells during the week of June 13–19, 2026. These include four significant releases of contaminated groundwater in Warren and Washington counties and a milestone of 300 abandonment violations issued so far this year. These regulatory actions highlight ongoing environmental compliance challenges and the increasing state focus on legacy infrastructure and spill remediation within the conventional sector.

Inspections conducted by the DEP revealed several significant groundwater contamination events linked to conventional operations. Trinity Mineral Partners, LLC was cited for releases at two sites in Sugar Grove Township, Warren County, where contaminated water damaged vegetation and polluted road ditches. A third Trinity site, the Conklin Lease C1 in Brokenstraw Township, showed evidence of a significant release around storage tanks. Additionally, a follow-up at the CC Wharton Estate’s McCown 1 well in Washington County found that no remediation had occurred since original violations were issued in 2023, with contaminated water now migrating into a nearby pond.

The DEP's enforcement against abandoned wells has reached a significant threshold, with 300 notices of violation issued or continued in 2026. Recent inspections in Cranberry Township identified 11 abandoned wells—including the Farren and O’Neil leases—where the owner was reported as recently deceased. In Sugar Grove Township, Delta has received 27 violations since May for abandoning wells, including the A. Mortenson and William & Sarah Wigren sites. Other inspections in Cussewago and Washington Townships found wells that remain unplugged years after initial violations, with some sites also failing to submit mandatory production and integrity reports.

Beyond conventional well issues, the DEP monitored shale gas operations and infrastructure. At the Bense shale gas well pad in Troy Township, approximately 420 gallons of water-based drilling mud were recovered after a spill escaped containment into a well cellar on June 15. In Auburn Township, routine monitoring of the Cannella 6H shale well confirmed a persistent cement and casing failure, with gas still present in the well annulus. Amidst these compliance actions, the Pennsylvania Public Utility Commission announced the distribution of $243.8 million in Act 13 shale gas impact fees to support local communities and state environmental programs.