Why It Matters
A federal court ruling in Oregon could expose major industrial operators to significant legal liability over groundwater contamination affecting tens of thousands of residents in Morrow and Umatilla counties. The case represents one of the more sweeping environmental class actions in the Pacific Northwest in recent years, with a potential class of roughly 45,000 people who allege their drinking water has been fouled by industrial waste.
What Happened
U.S. District Judge Michael Simon on Friday denied a motion to dismiss Pearson v. Port of Morrow, allowing the case to advance as a class action. The lawsuit, originally filed in federal court in February 2024, has grown to name 17 defendants and now seeks to represent all affected residents across the two eastern Oregon counties.
The suit centers on allegations that nitrogen-rich wastewater generated by industrial food processors and data center operations was applied to agricultural fields in the region, eventually contaminating local groundwater. Judge Simon found that the plaintiffs had adequately alleged class-action liability on grounds of negligence, trespass, and private nuisance under Oregon law, and that the case had proper standing under the federal Resource Conservation and Recovery Act.
Named defendants include the Port of Morrow, food processor Lamb Weston, Threemile Canyon Farms, Madison Ranches, Portland General Electric, and Columbia River Processing, among others. The original plaintiffs are Michael Pearson, Michael and Virginia Brandt, and James and Silvia Suter.
A jury trial is scheduled to begin May 3, 2027.
By the Numbers
- 17 defendants named in the suit
- 45,000 potential class members, according to plaintiffs’ counsel
- $20.5 million — the amount Amazon, an original defendant, has been negotiating as a settlement since March
- February 2024 — when the lawsuit was first filed
- May 3, 2027 — scheduled start of the jury trial
What’s Being Said
Plaintiffs’ attorney Steve Berman called Friday’s decision a turning point for residents who have gone without reliable clean water while awaiting legal accountability. “This ruling is a significant win for the thousands of residents in Morrow and Umatilla counties who have waited years for safe drinking water and for someone to be held accountable,” Berman said.
Amazon, which was named among the original defendants, has been in separate settlement negotiations since March. The reported figure under discussion — $20.5 million — would resolve the claims against the tech giant without proceeding to trial, though no final agreement has been announced.
Zoom Out
The case reflects a broader national pattern of communities near concentrated industrial and agricultural operations turning to federal courts for remedies when state regulatory action has been seen as insufficient. Contamination linked to the land application of industrial wastewater — particularly high-nitrogen effluent — has drawn legal scrutiny in several agricultural regions across the country.
The Resource Conservation and Recovery Act, a federal statute governing solid and hazardous waste disposal, has increasingly been used as a legal vehicle for private plaintiffs in environmental suits, giving federal courts jurisdiction where state-law claims alone might otherwise limit the scope of litigation.
Eastern Oregon’s agricultural corridor, anchored by large-scale food processing operations, has faced mounting attention over groundwater quality, and the class action’s scale underscores how broadly the alleged contamination may have spread through the region’s water supply.
What’s Next
With the motion to dismiss denied, the case proceeds toward trial. The remaining 16 defendants — those not currently in settlement talks — face the prospect of a full jury proceeding in May 2027 unless additional settlements are reached. Plaintiffs’ counsel will also continue building the evidentiary record for what could become one of the largest environmental liability verdicts in Oregon history if the case reaches a verdict. The Amazon settlement negotiation is expected to conclude separately from the main trial track.