San Buenaventura State Beach (San Jon Rd)

Source Information

Ventura County Environmental Health Division samples beaches along the 68 km (42 miles) of the Ventura Coast. All beaches are sampled from April - October. A smaller number of beaches are sampled from November - March. Beaches are tested weekly for total coliform, fecal coliform, and enterococcus. If a sample fails to meet water quality standards, then the beach is re-tested. If the second sample also fails, then the beach is posted. During the wet season, a beach is posted if it fails the first test. There is no re-sampling in the wet season. The results are posted on the VCEHD website, which Swim Guide checks daily for the latest information. A beach is marked Green when bacteria levels for a single day and geometric mean fail to meet State of California water quality standards. A beach is marked Red when bacteria levels for a single day or the geometric mean fail to meet State of California water quality A beach is marked Grey when there is no current or reliable monitoring information available. The specific standards for bacteria are as follows: Single sample maximums: Total Coliform> 10,000 MPN (Most Probable Number) / 100 ml of water; or Fecal Coliform> 400 MPN / 100 ml; or Total coliform bacteria> 1,000 per 100 milliliters, if the ratio of fecal/total coliform bacteria exceeds 0.1; or Enterococcus bacteria> 104 per 100 milliliters. Geometric Mean (5 samples collected over a 30 day period): Total Coliform > 1,000 MPN / 100 ml of water; or Fecal Coliform > 200 MPN / 100 ml; or Enterococcus > 35 MPN / 100 ml