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Environmental Health
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 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: | October 28, 2024 |
| 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: | October 28, 2024 |
| Total Coliform: | Less than 63 (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.
| Stillwater Regional Park Beach | |
|---|---|
| Date Collected: | October 28, 2024 |
| Total Coliform: | 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: | October 28, 2024 |
| Total Coliform: | 20 (per 100 ml) |
| Escherichia coli: | 20 (per 100 ml) |
| Enterococcus: | 20 (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: | October 28, 2024 |
| 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.
| Campbell Cove State Beach | |
|---|---|
| Date Collected: | October 28, 2024 |
| Total Coliform: | 85 (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.
| Doran Regional Park Beach | |
|---|---|
| Date Collected: | October 28, 2024 |
| 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) |
Download Test Results
- 2024 test results - all locations
(PDF: 117 kB) - 2023 test results - all locations
(PDF: 117 kB) - 2022 test results - all locations
(PDF: 167 kb) - 2021 test results - all locations
(PDF: 214 kb) - 2020 test results - all locations
(PDF: 83.9 kb) - 2019 test results - all locations
(PDF: 22.3 kb) - 2018 test results - all locations
(PDF: 88 kb) - 2017 test results - all locations
(PDF: 36 kb) - 2016 test results - all locations
(PDF: 36 kb) - 2015 test results - all locations
(PDF: 331 kb) - 2014 test results - all locations
(PDF: 320 kb) - 2013 test results - all locations
(PDF: 416 kb) - 2012 test results - all locations
(PDF: 96 kb)
Where Water Samples are Collected
