Pebble Beach

Pescadero, California
Managed by The Swim Guide

Photo by Charlie Day

Pebble Beach is located in Pescadero, extending from Año Nuevo State Reserve to Thornton State Beach. The name "Pebble" was given to the beach because of the numerous pebbles of chipped quartz you can find from an offshore reef, tumbled ashore, then wave-polished and rounded into beautifully hued small stones.
Bird-watchers and nature lovers will be happy to know that the one mile walk between Pebble Beach and Bean Hollow Beach offers a close-up look at colonies of harbor seals and shorebirds.

WATER QUALITY
  • No data available
  • Current Status
  • This status is based on the latest sample, taken on . The Swim Guide updates the status of this beach as soon as test results become available. These results were posted to Swim Guide on at
For water quality icon legend, click:   
MONITORING FREQUENCY

Pebble Beach is not sampled

SOURCE INFORMATION

San Mateo County conducts weekly sampling at over 43 ocean and fresh water sites throughout the year. Samples are collected on Mondays and analyzed by the San Mateo County Public Health Laboratory for the levels of three indicator bacteria. Results are posted to their website within 48 hours. Swim Guide checks for the latest results daily.

The standards for indicator bacteria are as follows:
Single sample maximum
Total Coliform > 10,000 MPN (Most Probable Number) / 100 ml of water
Enterococcus > 104 MPN / 100 ml
E.coli > 400 MPN / 100 ml

Geometric Mean (5 samples collected over a 30 day period)
Total Coliform > 1,000 MPN / 100 ml of water
Enterococcus > 35 MPN / 100 ml
E.coli > 200 MPN / 100 ml

A beach is marked Green when bacteria levels for a single day and geometric mean are below the standards mentioned.

A beach is marked Red when bacteria levels for a single day or the geometric mean are above the standards mentioned.

A beach is marked Grey when there is no current or reliable monitoring information available.

Please contact Greg Smith of County Environmental Health by email GJSmith@smcgov.org or phone (650) 372-6200 if you are interested in becoming a volunteer to help collect water samples at your favorite beach.

If you think you’ve contracted an water related illness please send us a pollution report, see your doctor and contact County Environmental Health Services at (650) 372-6200 to make a report. They will need your name, the dates and areas you were swimming, symptoms and contact information for your or your health care provider.

WATER QUALITY GRAPH

Pebble Beach

Pescadero, California
Managed by The Swim Guide

WATER QUALITY
  • No data available
  • Current Status
  • This status is based on the latest sample, taken on . The Swim Guide updates the status of this beach as soon as test results become available. These results were posted to Swim Guide on at
For water quality icon legend, click:   

Photo by Charlie Day

Pebble Beach is located in Pescadero, extending from Año Nuevo State Reserve to Thornton State Beach. The name "Pebble" was given to the beach because of the numerous pebbles of chipped quartz you can find from an offshore reef, tumbled ashore, then wave-polished and rounded into beautifully hued small stones.
Bird-watchers and nature lovers will be happy to know that the one mile walk between Pebble Beach and Bean Hollow Beach offers a close-up look at colonies of harbor seals and shorebirds.

MONITORING FREQUENCY

Pebble Beach is not sampled

SOURCE INFORMATION

San Mateo County conducts weekly sampling at over 43 ocean and fresh water sites throughout the year. Samples are collected on Mondays and analyzed by the San Mateo County Public Health Laboratory for the levels of three indicator bacteria. Results are posted to their website within 48 hours. Swim Guide checks for the latest results daily.

The standards for indicator bacteria are as follows:
Single sample maximum
Total Coliform > 10,000 MPN (Most Probable Number) / 100 ml of water
Enterococcus > 104 MPN / 100 ml
E.coli > 400 MPN / 100 ml

Geometric Mean (5 samples collected over a 30 day period)
Total Coliform > 1,000 MPN / 100 ml of water
Enterococcus > 35 MPN / 100 ml
E.coli > 200 MPN / 100 ml

A beach is marked Green when bacteria levels for a single day and geometric mean are below the standards mentioned.

A beach is marked Red when bacteria levels for a single day or the geometric mean are above the standards mentioned.

A beach is marked Grey when there is no current or reliable monitoring information available.

Please contact Greg Smith of County Environmental Health by email GJSmith@smcgov.org or phone (650) 372-6200 if you are interested in becoming a volunteer to help collect water samples at your favorite beach.

If you think you’ve contracted an water related illness please send us a pollution report, see your doctor and contact County Environmental Health Services at (650) 372-6200 to make a report. They will need your name, the dates and areas you were swimming, symptoms and contact information for your or your health care provider.

WATER QUALITY GRAPH



Swim Guide shares the best information we have at the moment you ask for it. Always obey signs at the beach or advisories from official government agencies. Stay alert and check for other swimming hazards such as dangerous currents and tides. Please report your pollution concerns so Affiliates can help keep other beach-goers safe.

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