Puget Sound photo identifier

Saving Puget Sound

Dissolved Oxygen in Puget Sound

Fish need oxygen like humans do. Where dissolved oxygen levels are low, fish and other marine life become stressed and die or are forced to flee their habitat. Ecology is working on a number of projects related to Puget Sound and nutrients.

South Puget Sound Dissolved Oxygen Study - started collecting data in 2006. It focuses on the southern part of Puget Sound.

Salish Sea Dissolved Oxygen Model - This effort evaluates the impact of human sources of nitrogen, the Pacific Ocean, and climate on dissolved oxygen in Puget Sound, the Strait of Juan de Fuca, and the Strait of Georgia, now, in 2020, 2040, and 2070.

Technical and Economic Evaluation of Nutrient Removal Technologies (PDF) - A recently completed project evaluated the costs of adding nitrogen or phosphorus removal to municipal wastewater facilities.


For more information on the project or the advisory committees please contact:

Dustin Bilhimer
Water Quality Program
Washington State Dept. of Ecology
P.O. Box 47600
Olympia, WA 98504-7600
Phone: 360-407-7143
E-mail: dustin.bilhimer@ecy.wa.gov