County of SonomaCounty of Sonoma Department of Health Services  
Sonoma Coast

Ocean Water Quality Monitoring

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For current Beach Sampling postings, call the Hotline at (707) 565-6552

Sonoma County has approximately 64 miles of coastal beaches. In order to protect the health of the public, weekly samples are collected and tested between April 1 and October 31 by the Environmental Health Division to monitor bacterial levels.

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 the criteria. See the map for beach locations. Click on a beach name to see its photo.

Interim Campbell Cove Report (654K)

Weekly Water Quality Test Results

Map of beaches
State Standards Total Coliform (TC): 1,000 per 100 ml if Fecal/Total is > .1; 10,000 per 100 ml if Fecal/Total is < .1
Fecal Coliform (FC): 400 per 100 ml
Enterococcus (ENT): 104 per 100 ml
30 Day Averaging Total Coliform (TC): 1,000 per 100 ml
Fecal Coliform (FC): 200 per 100 ml
Enterococcus (ENT): 35 per 100 ml

Unless indicated, bacterial levels shown are below State standards. There are no restrictions to water contact activity.

Sonoma County Results
This table is updated on workdays.
For current postings, call the Beach Sampling Hotline at (707) 565-6552

 
Advisory * = Bacterial levels have exceeded State standards. Contact with water may cause illness and should be avoided.
Closed ** = Significant risk to health. Avoid any contact with the water until further notice.
 
Sample
Date
Gualala Reg.
Park Beach
Black Point
Beach
Stillwater Cove
Reg. Park Beach
Goat Rock
State Park Beach
Salmon Creek
State Park Beach
Campbell Cove
State Park Beach
Doran Reg.
Park Beach
  TC FC ENT TC FC ENT TC FC ENT TC FC ENT TC FC ENT TC FC ENT TC FC ENT
Mar 15, 2010                               135 10 <10      
Mar 8, 2010                         496 52 20 231 <10 <10      
Mar 1, 2010                               1,616 30 10      
Feb 22, 2010 <10 <10 <10 10 <10 <10 132 10 <10 <10 <10 <10 20 <10 52 20 <10 <10 <10 <10 <10
Feb 16, 2010 <10 <10 <10 <10 <10 <10 31 <10 <10 31 <10 <10 122 75 31 805 <10 201 <10 <10 <10
Feb 8, 2010 52 10 <10 20 <10 <10 63 <10 <10 243 <10 10 2,359 169 109 20 <10 <10 110 20 <10
Feb 1, 2010 695 <10 <10 20 <10 <10 52 10 20       31 10 <10 393 20 <10 20 <10 <10
Jan 24, 2010 288 10 41 259 30 52 1,565 259 691       3,076 738 691 1,375 318 110 683 41 75
Jan 18, 2010             464 10 63       3,448 857 1,137 175 <10 31 108 10 10
Jan 11, 2010 <10 <10 <10       <10 <10 <10       <10 <10 <10       <10 <10 <10
Jan 4, 2010 <10 <10 <10 10 <10 <10 132 10 <10 <10 <10 <10 20 <10 52 20 <10 <10 <10 <10 <10

* 1/11/2010 samples that are blank were not sampled due to inaccessiblilty due to park closures for high surf. With the exception of Campbell Cove which was not sampled due to a compromised sample.

* 1/18/2010 samples that are blank were not sampled due to inaccessiblilty due to park closures for high surf. Resampling for exceedances at Salmon Creek were not conducted due to heavy rainfall event.

* 1/24/2010 samples that are blank were not sampled due to inaccessiblilty due to park closures for high surf. Resampling for exceedances at Salmon Creek were not conducted due to heavy rainfall event.

* 2/16/2010 although single sample value did not exceed state standards, the 30 day mean average value of 124 per 100ml did exceed state standards.

Results from previous years:

PDF Icon 2009
PDF Icon 2008
PDF Icon 2007
2006
2005

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