Jefferson County annual BEACH report

We monitored four beaches in Jefferson County in 2023: 

  • Fort Worden State Park
  • Chetzemoka Park
  • Point Whitney Tidelands
  • Mystery Bay State Park

Beach at Fort Worden State Park 

Keeping beaches safe

The Beach Environmental Assessment, Communication & Health, or 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.  

Jefferson County Public Health sampled four beaches weekly in Jefferson County during the 2023 season. Port Townsend Marine Science Center staff and volunteers assisted sampling efforts by sampling Fort Worden State Park.

See details on each beach below.

Data summary: Bacteria results compared to standards

The chart below summarizes the bacteria levels at Jefferson 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 Jefferson County beaches
(in enterococcus per 100 mL) for 2023.

Beach GM STV
Fort Worden State Park 17 80
Chetzemoka Park 12 20
Point Whitney Tidelands 12 21
Mystery Bay State Park 17 145