Grays Harbor County BEACH report

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

  • Westhaven State Park, Half Moon Bay
  • Westhaven State Park, South Jetty
  • Westport, The Groynes

All three beaches are popular surfing beaches. They all had good water quality with little or no bacteria present during most sample events.
 


South Jetty beach at Westhaven State Park

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.

Grays Harbor County saltwater swimming beaches

We sampled three beaches in Grays Harbor County weekly from May 21 – Aug. 31, 2018. All three beaches are popular surfing beaches, and they all had very good water quality with little or no bacteria present during most sample events.

Find details about each of the Grays Harbor County beaches below:

Data summary: Bacteria results compared to standards

The chart below summarizes the bacteria levels at Grays Harbor 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 Grays Harbor County beaches (in enterococcus per 100 mL) for 2018

Beach Geometric Mean Statistical Threshold Value
Westhaven State Park, Half Moon Bay <10 <10
Westhaven State Park, South Jetty 10 12
Westport, The Groynes <10 11