South of Market near San Francisco

Each dot is one sample taken by the monitoring agency. The dashed brick line marks the EPA single-sample limit.

Common questions.

Is South of Market near San Francisco safe to swim today?

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South of Market near San Francisco is currently safe for swimming. Recent samples within safe ranges.

When was South of Market near San Francisco last tested?

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The most recent water-quality sample at South of Market near San Francisco was collected on Aug 3, 2026 (4 days ago). California monitoring agencies test Bay Area beaches weekly during swim season (roughly May through October).

What is the bacteria level at South of Market near San Francisco?

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The latest reading at South of Market near San Francisco shows enterococcus at 20 MPN/100mL (EPA single-sample limit: 104).

Does rain affect water quality at South of Market near San Francisco?

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Yes. Heavy rainfall washes bacteria and pollutants from land into the water, raising contamination risk for 24–72 hours. The past 48 hours recorded 0.00 in of rain; the past 72 hours recorded 0.00 in. Our advisory threshold is ≥1.00 in over 48h (or ≥0.50 in over 72h) for enclosed or storm-drain beaches.

Where is South of Market near San Francisco located?

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South of Market near San Francisco is located in the San Francisco area of the San Francisco Bay region (coordinates: 37.7634°N, 122.3869°W). You can get turn-by-turn directions via Google Maps or Apple Maps directly from this page.

How is the water quality data for South of Market near San Francisco collected?

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Bacteria samples are collected by California state and county health agencies under the AB 411 Safe-to-Swim program and reported to the state's Safe-to-Swim database (data.ca.gov). Rainfall figures come from Open-Meteo forecast and archive data. Bay Area Swim aggregates both sources and updates every morning.