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IslandCounty Assessor

Swimming Beaches

Our mission is to reduce the risk of illness for people who swim at marine or freshwater beaches.
Public Health staff sample waters and test for high levels of indicator bacteria.  When these levels are too high for recreational use, the public is notified through press releases and posting signs on site.  Indicator bacteria such as E. coli, enterococcus and fecal coliform, are found in the gut of warm blooded animals.  High levels of indicator bacteria mean that feces and possible pathogens are present, which poses an increased risk of illness from swimming.  When high bacteria levels are found, staff re-sample and test​ again.  Warning signs are posted when repeat samples continue to show high levels of bacteria.  Staff inspect and try to identify a pollution source.  We also notify and work with the community to identify and fix a problem.

Causes of water contamination at swimming beaches can include:
  1. High volume of swimmers
  2. Children not clean after bathroom use
  3. Improper disposal of diapers
  4. Diarrhea incident in the water
  5. Storm water runoff carrying human or animal waste
  6. Malfunctioning sewage treatment plant or on-site sewage system

Helpful Resources

Department of Ecology - BEACH Program

Island County

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Main Offices

Whidbey Office
1 NE 7th Street
Coupeville, WA 98239

Camano Office
121 N East Camano Dr
Camano Island, WA 98282

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Main Line: (360) 678-5111
Sheriff: (360) 679-7310

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