Wastewater treatment plants account for about 70% of the excess nutrients.
Bothell-Kenmore Reporter by Aaron Kunkler – January 25, 2021
During the summer of 2015, thousands of dead eels washed up on the beaches of the Hood Canal. These eels suffered a familiar fate for marine life in many parts of Puget Sound and its long, shallow offshoots when the level of dissolved oxygen in the water had become too low to support them.
https://www.bothell-reporter.com/news/human-caused-dead-zones-threaten-health-of-puget-sound/
