Ocean Water Quality

Sonoma County has approximately 64 miles of coastal beaches. Ocean water samples are collected at beaches that are visited by 50,000 people per year and are adjacent to storm drains, creek or rivers. Seven beaches in Sonoma County meet this criteria.

Environmental Health & Safety monitors bacterial levels by collecting and testing weekly water samples between April 1 and October 31.

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Water Quality Test Results

Gualala Regional Park Beach
Date Collected: May 9, 2022
Total Coliform: Less than 10 (per 100 ml)
Escherichia coli: Less than 10 (per 100 ml)
Enterococcus: Less than 10 (per 100 ml)
Beach Status: Open

Beach is open. Health risk is low for water contact. Bacterial levels are within State standards.

Black Point Regional Park Beach
Date Collected: May 9, 2022
Total Coliform: 20 (per 100 ml)
Escherichia coli: 20 (per 100 ml)
Enterococcus: Less than 10 (per 100 ml)
Beach Status: Open

Beach is open. Health risk is low for water contact. Bacterial levels are within State standards.

Stillwater Regional Park Beach
Date Collected: May 9, 2022
Total Coliform: Less than 10 (per 100 ml)
Escherichia coli: Less than 10 (per 100 ml)
Enterococcus: Less than 10 (per 100 ml)
Beach Status: Open

Beach is open. Health risk is low for water contact. Bacterial levels are within State standards.

Goat Rock State Beach
Date Collected: May 9, 2022
Total Coliform: 295 (per 100 ml)
Escherichia coli: 10 (per 100 ml)
Enterococcus: Less than 10 (per 100 ml)
Beach Status: Open

Beach is open. Health risk is low for water contact. Bacterial levels are within State standards.


Salmon Creek State Beach
Date Collected: May 9, 2022
Total Coliform: Less than 10 (per 100 ml)
Escherichia coli: Less than 10 (per 100 ml)
Enterococcus: 10 (per 100 ml)
Beach Status: Open

Beach is open. Health risk is low for water contact. Bacterial levels are within State standards.

Campbell Cove State Beach

Campbell Cove State Beach
Date Collected: May 9, 2022
Total Coliform: Less than 10 (per 100 ml)
Escherichia coli: Less than 10 (per 100 ml)
Enterococcus: Less than 10 (per 100 ml)
Beach Status: Open

Beach is open. Health risk is low for water contact. Bacterial levels are within State standards.

Doran Regional Park Beach

Doran Regional Park Beach
Date Collected: May 9, 2022
Total Coliform: Less than 10 (per 100 ml)
Escherichia coli: Less than 10 (per 100 ml)
Enterococcus: Less than 10 (per 100 ml)
Beach Status: Open

Beach is open. Health risk is low for water contact. Bacterial levels are within State standards.

State Standards

Total Coliform: 10,000 (per 100 ml) 
Escherichia coli: 400 (per 100 ml)
Enterococcus: 104 (per 100 ml)

30-Day Geometric Mean/Average Value

Total Coliform: 1,000 (per 100 ml)
Escherichia coli: 126 (per 100 ml)
Enterococcus: 35 (per 100 ml)

Where Water Samples are Collected


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