King County BEACH report

We sampled 10 beaches weekly or biweekly in King County during the 2024 monitoring season:

  • Alki Beach Park
  • Carkeek Park Beach
  • Dash Point State Park
  • Golden Gardens
  • Lincoln Park
  • Redondo County Park
  • Richey Viewpoint
  • Richmond Beach Saltwater Park
  • Saltwater State Park
  • Seahurst Park

Golden Gardens beach in King County

Keeping beaches safe

The Beach Environmental Assessment, Communication & Health (BEACH) Program ensures that marine water is safe to swim and play in and informs the public if water doesn't meet swimming standards. Sampling takes place from Memorial Day to Labor Day. During this time, you can check out current water quality conditions on the swimming map.  

Public Health-Seattle & King County and the Department of Ecology sampled 10 beaches weekly or bi-weekly in King County during the 2024 season.

See details on each beach below.


Data summary: Bacteria results compared to standards

The chart below summarizes the bacteria levels at King County beaches in relation to the EPA swimming standard or saltwater swimming criteria. Beaches are considered unsafe for swimming when the geometric mean of enterococcus/100 mL of water is greater than or equal to 30 and the statistical threshold value of enterococcus/100 mL is greater than or equal to 110. We issue a public swimming advisory when enterococcus levels exceed 104 per 100 mL of water.

Table: Calculated geometric mean and statistical threshold value at King County beaches (in enterococcus per 100 mL) for 2024.

Beach GM STV
Alki Beach Park 12 22
Carkeek Park 11 18
Dash Point State Park 15 46
Golden Gardens 26 71
Lincoln Park 16 38
Redondo County Park 19 50
Richey Viewpoint 32 74
Richmond Beach Saltwater Park 11 14
Saltwater State Park 20 114
Seahurst Park 15 28