BEACH Program

2016 BEACH Program Report

Snohomish County

Washington State University Snohomish County Extension Beach Watchers sampled five beaches in Snohomish County each week from May 23 through August 29, 2016, and Jetty Island beach every other week in July and August. Stillaguamish Tribal staff sampled one beach weekly, Kayak Point, during the same period. The 2016 results for each beach are presented below. Results are presented in the following table with details on each beach in the test below.

Bacteria Results Compared to Standards Geometric Mean 90th Percentile
EPA Swimming Standard ≤ 35 ≤ 276
Edmonds Marina Beach Park 11 25
Edmonds Underwater Park 24 126
Jetty Island 11 16
Kayak Point County Park 9 10
Mukilteo Lighthouse Park 10 15
Picnic Point County Park 12 30

Edmonds Marina Beach Park

During the 2016 swim season, Edmonds Marina Park beach had very good water quality. This beach met the swimming standards for all periods sampled.

Edmonds Underwater Park

Edmonds Underwater Park Beach

Edmonds Underwater Park Beach

Edmonds Underwater Park beach generally has good water quality. During the 2016 swim season, bacteria results were in the closure range on July 25th and July 27th. As a result a swimming closure was issued for this beach from July 28-August 1, 2016. This beach met swimming standards during all other periods sampled.

In August, BEACH Program staff conducted an investigation of this beach due the two high bacteria events. Findings were discussed with City of Edmonds staff and the local health jurisdiction.

Jetty Island Beach

Due to lack of public access, Jetty Island beach was sampled twice a month in July and August, four times in all. During the four sample events, water quality was excellent and met the swimming standards.

BEACH Program staff conducted a shoreline survey at this beach on August 9, 2016. During the survey we observed several beachgoers feeding the birds. We recommended that visitors refrain from feeding the wildlife as waste from wildlife can increase fecal pollution in the area.

Kayak Point County Park Beach

During the 2016 swim season, Kayak Point County beach had excellent water quality. This beach met the swimming standards for all periods sampled.

Mukilteo Lighthouse Park Beach

Mukilteo Lighthouse Park Beach

Mukilteo Lighthouse Park Beach

During the 2016 swim season, Mukilteo Lighthouse Park beach had excellent water quality. This beach met the swimming standards for all periods sampled.

In addition to beach sampling, volunteers sampled water from a stormwater pipe that discharges to the beach. Samples were obtained eight times when the pipe was flowing. During two of the eight sample events, bacteria levels were > 104 enterococci/100 mL, exceeding the swimming criteria. It is difficult to determine if this discharge impacts water quality along the beach area, no flow information is available, thus bacteria loading cannot be calculated.

Picnic Point County Park Beach

During the 2016 swim season, Picnic Point County beach generally had good water quality. On June 13th sampling results were in the advisory range, but subsequent sampling showed that bacteria levels had dropped into the safe swimming range. The beach met the swimming standards during all other periods sampled.

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