Is it Safe to Swim?
Use this map to check water quality conditions at monitoring sites in California.
See How to Use and Frequently Asked Questions for more information.
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Data
Interpreting safety statuses
The status at each monitoring site is based on how recent monitoring results compare to the Statewide Bacteria Water Quality Objectives. Many factors can influence your risk of illness, including the level of contamination, the type of activity, and individual health conditions. Contact with contaminated water can increase the risk of gastrointestinal illness, skin rashes, and infections of the ears, eyes, nose, or throat.
Low risk
Both the single sample and the geometric mean are below their respective thresholds. This status indicates that there is generally a low level of risk associated with water contact at this site.
Both the single sample and the geometric mean are below their respective thresholds. This status indicates that there is generally a low level of risk associated with water contact at this site.
Use caution
Either the single sample, the geometric mean, or both exceed their respective thresholds. This status indicates that there is generally an elevated risk associated with water contact at this site.
Either the single sample, the geometric mean, or both exceed their respective thresholds. This status indicates that there is generally an elevated risk associated with water contact at this site.
Not enough data
Fewer than five samples of the relevant indicator bacteria have been collected in the past six weeks. There is insufficient data to assess the current level of risk associated with water contact at this site.
Fewer than five samples of the relevant indicator bacteria have been collected in the past six weeks. There is insufficient data to assess the current level of risk associated with water contact at this site.