May 16, 2023.Reading time 7 minutes.
Environmental scientists collect water samples each week from all King County lake beaches and test them for bacteria. Our scientists look through the data for potential public health risks. Depending on the results, we close or open beaches to keep people safe. This year, we’re changing how we make beach closure and reopen decisions. These changes are in line with the latest science.
July 22, 2019.Reading time 1 minute.
Public Health – Seattle & King County on Monday afternoon reopened North and South beaches at Discovery Park. These two beaches were closed Friday in an abundance of caution after a West Point sewage bypass into Puget Sound. Water quality tests conducted over the past three days have all come back under the state standard. […]
August 29, 2018.Reading time 3 minutes.
Paralytic Shellfish Poison (PSP) has been detected at unsafe levels in Quartermaster Harbor shellfish on Vashon-Maury Island. As a result, the Washington State Department of Health (DOH) has closed Quartermaster Harbor beaches to recreational shellfish harvest. The closure includes all species of shellfish including clams, geoduck, scallops, mussels, oysters, snails and other invertebrates; the closure […]
August 29, 2016.Reading time 6 minutes.
Update 9/2/16 Tibbetts Beach at Lake Sammamish is approved to reopen. Public Health is aware of 15 people who got ill after swimming at Tibbetts Beach on Friday, August 26th. Based on their symptoms, the timing between when they swam and became ill, and the duration of illness, we suspect that the likely cause was […]