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October 15, 2026

Two common terns flying. One of the birds has a small fish in its mouth.">

Dispatch from the World Seabird Conference in Australia

Last month, PSI staff writer Eric Wagner joined hundreds of scientists from 51 countries to talk about the health of the world’s seabirds. Throughout the conference, the climate crisis loomed large but there were signs of hope in the sheer numbers of dedicated scientists working on seabird protection. By Eric Wagner Seabirds are declining all […]

September 29, 2026

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Sewage treatment permits being revised to address nitrogen, low-oxygen problems

Regulatory efforts to confront low-oxygen problems in Puget Sound have turned toward sewage treatment plants, as the Washington Department of Ecology proceeds to reissue operational permits, some ahead of the normal five-year schedule. Excess nitrogen has been found to contribute to low-oxygen problems in Puget Sound, and computer models have identified locations where reducing nitrogen […]

March 23, 2026

Puget Sound shoreline viewed from Chambers Creek WWTP site, with freight train passing in foreground.">

Out of sight, back to the Sound

Tucked along the shoreline of Commencement Bay, the Chambers Creek Wastewater Treatment Plant is one of dozens of wastewater treatment plants that discharge directly into Puget Sound. It serves more than 320,000 people — roughly a third of Pierce County’s population — in an area that includes Tacoma, Lakewood, University Place, and surrounding communities, processing […]