San Francisco

Aquatic Park (San Francisco, South)

Good to swim today.
Last sampled Aug 3, 2026 · 4 days ago

Recent samples within safe ranges.

The most recent sample (Aug 3, 2026) measured Fecal coliform and Total coliform but did not test Enterococcus. This status reflects the most recent Enterococcus reading from Jul 20, 2026.

Plate I: Location

Ninety days of readings.

Log scale · MPN/100mL

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

SafeCautionUnsafe

A newer sample on Aug 3 (14 days ago) reported Fecal coliform and Total coliform but not Enterococcus, so the chart's last point for Enterococcus is older than the most recent sample date. The swim status still reflects the most recent Enterococcus reading shown here — a newer sample that skipped this analyte can't clear an earlier exceedance.

Common questions.

Is Aquatic Park (San Francisco, South) safe to swim today?
Aquatic Park (San Francisco, South) is currently safe for swimming. Recent samples within safe ranges.
When was Aquatic Park (San Francisco, South) last tested?
The most recent water-quality sample at Aquatic Park (San Francisco, South) was collected on Aug 3, 2026 (4 days ago). California monitoring agencies test Bay Area beaches weekly during swim season (roughly May through October).
Does rain affect water quality at Aquatic Park (San Francisco, South)?
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 Aquatic Park (San Francisco, South) located?
Aquatic Park (San Francisco, South) is located in the San Francisco area of the San Francisco Bay region (coordinates: 37.8069°N, 122.4230°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 Aquatic Park (San Francisco, South) collected?
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.

Also nearby

Data: California Safe-to-Swim (ODbL 1.0) · Open-Meteo — Precipitation (CC-BY 4.0) · Pipeline status

For general guidance only · Conditions change · Swim at your own risk