Fresh Water Quality

Environmental Health & Safety monitors bacterial levels in the water at beaches along the Russian River and at Spring Lake Swimming Lagoon by collecting and testing weekly water samples between Memorial Day and Labor Day. We also monitor blue-green algae levels along the Russian River.

  • Health Services
    Published on July 12, 2017

    The Department of Health Services (DHS) is re-opening Monte Rio Beach after follow-up testing of samples taken showed diminished levels of coliform bacteria. DHS will remove the closure signs placed at the beach. The beach is open and safe to swim in.

  • Environmental Health & Safety

    Published on July 7, 2017

    Follow-up testing of samples taken from Monte Rio Beach continue to show elevated levels of coliform bacteria. The beach remains closed and signs advising the public to avoid swimming, wading or water contact remain posted in accordance with state guidelines.

  • More Press Releases

Russian River Beaches
Water Quality Test Results

Bacteriological sampling of the Russian River has ended for the season. Sampling will resume the week of Memorial Day in 2018.

Russian River sampling locations

Test Results from Previous Years

Spring Lake Swimming Lagoon
Water Quality Test Results

Bacteriological sampling of the Spring Lake Swimming Lagoon has ended for the 2017 season.

Lagoon is closed.

Spring Lake Lagoon sampling locations

Information on swimmer's itch from the Centers for Disease Control and Prevention (CDC)

Test Results from Previous Years

State Standards

Total Coliform

10,000 per 100 ml

Escherichia coli

235 per 100 ml

Contact Information

Public Health Division
County of Sonoma
Business Hours
Monday – Friday
7:30 AM – 4:30 PM
Office Location
625 5th Street
Santa Rosa, CA 95404
38.44178, -122.7158781

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