Historical Water Quality
Passed water quality tests at least 95% of the time
This status is based on the latest sample, take on August 16th, 2023 Swim Guide - Main updates the status of this beach as soon as test results become available. These results were posted to Swim Guide on August 22nd at 1:05 PM.
Asilomar State Beach is sampled Weekly from January 1st to December 31st
About Asilomar State Beach
Source Information
Monterey County Health Department collects samples at this beach every week from April 1st - October 31st and from monthly November 1st - March 31st. Samples are tested for levels of total coliform, fecal coliform and enterococcus. Swim Guide checks daily for updates during the monitoring season. The standards for indicator bacteria are as follows: Single sample maximum Total Coliform > 10,000 MPN (Most Probable Number) / 100 ml of water Fecal Coliform > 400 MPN / 100 ml Enterococcus > 104 MPN / 100 ml Geometric Mean (5 samples collected over a 30 day period) Total Coliform > 1,000 MPN / 100 ml of water Fecal Coliform > 200 MPN / 100 ml Enterococcus > 33 MPN / 100 ml A coastal beach is marked Green when bacteria levels for a single day and geometric mean are below the standards mentioned. A coastal 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.
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