Island County annual BEACH report

We monitored three beaches in Island County from May 21 through Aug. 31, 2018:

  • Dave Mackie Memorial County Park
  • Freeland County Park, Holmes Harbor
  • Windjammer Lagoon

Freeland County Park in Holmes Harbor has a permanent swim advisory due to bacteria levels.

Windjammer Park swimming lagoon

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.

From Memorial Day through Labor Day in 2018, we sampled 62 public high-use beaches statewide, either weekly or biweekly, for enterococcus, a type of fecal bacteria. High enterococcus levels are linked to swimmer illness.

Island County saltwater swimming beaches

We monitored three beaches in Island County weekly from May 21 – Aug 31, 2018.

Find details about each of the Island County beaches below:

Data summary: Bacteria results compared to standards

The chart below summarizes the bacteria levels at Island 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 35 and the statistical threshold value of enterococcus/100 mL is greater than or equal to 276. We issue a public swimming advisory when enterococcus levels reach 104 per 100 mL of water. 

Table: Calculated geometric mean and statistical threshold value at Island County beaches (in enterococcus per 100 mL) for 2018

Beach Geometric Mean Statistical Threshold Value
Dave Mackie Memorial County Park 12 26
Freeland County Park, Holmes Harbor 23 83
Windjammer Lagoon 12 26