Twin Lakes State Beach

Santa Cruz, California

The beach has a mile of sandy shoreline, popular for swimming and picnicking. The park’s adjacent Schwan Lagoon is a good location for bird watching.

COVID-19

Keep your distance from other people.

Practicing social distancing is still essential. Only go to the beach if you are able to keep 6 feet or 2 meters away from others. Follow the instructions provided by your local health authorities. If your community has asked that you remain indoors and away from others, do so. Spending a day in any crowded place is the worst thing we can do for our most vulnerable right now and will counter our efforts to curb the virus’s spread.

Water Quality
  • Passed water quality tests 60-95% of the time

  • Historical Status
  • This status is based on the latest sample, taken on November 8th, 2021. Swim Guide - Main updates the status of this beach as soon as test results become available. These results were posted to Swim Guide on November 15th, 2021 at 11:58 AM.
For water quality icon legend, click:  
Current Weather
9°C
A mix of sun and clouds
Monitoring Frequency

Twin Lakes State Beach is sampled weekly from January 1st to December 31st.

Source Information

Santa Cruz County’s department of Environmental Health Services provides recreational water quality to the public through their website and by calling 831-454-3188. Samples are collected and tested for the levels of 3 types of bacteria. Please refer to the monitoring frequency in the beach description as frequencies vary throughout the year. Swim Guide checks daily for the latest results.

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

A beach will be marked Green when all three levels of bacteria are below standards

A beach will be marked Red when 1 of the bacteria levels are above the standard

A beach will be marked Grey when there is no current or reliable information.

The county advises that you avoid swimming in areas at risk to storm water runoff for at least 3 days after heavy rain.

Read more
Water Quality Graph

Twin Lakes State Beach

Santa Cruz, California

COVID-19

Keep your distance from other people.

Practicing social distancing is still essential. Only go to the beach if you are able to keep 6 feet or 2 meters away from others. Follow the instructions provided by your local health authorities. If your community has asked that you remain indoors and away from others, do so. Spending a day in any crowded place is the worst thing we can do for our most vulnerable right now and will counter our efforts to curb the virus’s spread.

Water Quality
  • Passed water quality tests 60-95% of the time
  • Historical Status
  • This status is based on the latest sample, taken on November 8th, 2021. Swim Guide - Main updates the status of this beach as soon as test results become available. These results were posted to Swim Guide on November 15th, 2021 at 11:58 AM.
For water quality icon legend, click:  
Current Weather
9°C
A mix of sun and clouds

The beach has a mile of sandy shoreline, popular for swimming and picnicking. The park’s adjacent Schwan Lagoon is a good location for bird watching.

Monitoring Frequency

Twin Lakes State Beach is sampled weekly from January 1st to December 31st.

Source Information

Santa Cruz County’s department of Environmental Health Services provides recreational water quality to the public through their website and by calling 831-454-3188. Samples are collected and tested for the levels of 3 types of bacteria. Please refer to the monitoring frequency in the beach description as frequencies vary throughout the year. Swim Guide checks daily for the latest results.

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

A beach will be marked Green when all three levels of bacteria are below standards

A beach will be marked Red when 1 of the bacteria levels are above the standard

A beach will be marked Grey when there is no current or reliable information.

The county advises that you avoid swimming in areas at risk to storm water runoff for at least 3 days after heavy rain.

Read more
Water Quality Graph

  Beach Location Water Quality
Santa Cruz, California
Santa Cruz, California
Santa Cruz, California
Santa Cruz, California
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