Researchers identify toxin that tainted Salem’s drinking water in 2018By Cassandra Profita (OPB)June 18, 2022 1 p.m.The research pinpointed the organisms at source of dangerous algae bloom.📨 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