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sfbayswim.info presents water quality data from California's open databases, highlights active water quality advisories, and shares extra information regarding the San Francisco Bay. Use this website to gain quick insight into conditions before heading out to enjoy the beautiful bay.
Use the water quality charts to understand recent trends. Rely on active alerts provided by the reporting agencies to gauge real-time water quality.
According to the Environmental Protection Agency (EPA), "Swimming at beaches with pollution in the water or in the sand can make you ill". In short, it is important to track water quality in order to make informed decisions about your water recreation. The EPA has additional information here.
There are many factors to consider when looking at the data. Some important ones include the date the sample was taken, the location of the sample, and what analytes the sample detects.