Maps highlight nitrate contamination in Eastern Oregon drinking waterBy Monica Samayoa (OPB)Aug. 1, 2024 11:47 p.m. Updated: Aug. 2, 2024 9:33 p.m.📨 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