Federal nitrate pollution lawsuit against Eastern Oregon farms moves forwardBy Antonio Sierra (OPB)Feb. 27, 2025 9:09 p.m. Updated: Feb. 28, 2025 7:32 p.m.Lower Umatilla Basin residents look to expand the case as it moves to Portland 📨 Daily news in your inboxSign up today for OPB’s “First Look” – your daily guide to the most important news and culture stories from around the Northwest.EmailPlease leave this field blankSign up