Each dot is one sample taken by the monitoring agency. The dashed brick line marks the EPA single-sample limit.
SafeCautionUnsafe
Common questions.
Is Gazos Creek Access (Peninsula, North) safe to swim today?
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Gazos Creek Access (Peninsula, North) is currently safe for swimming. Recent samples within safe ranges.
When was Gazos Creek Access (Peninsula, North) last tested?
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The most recent water-quality sample at Gazos Creek Access (Peninsula, North) was collected on Aug 17, 2026 (7 days ago). California monitoring agencies test Bay Area beaches weekly during swim season (roughly May through October).
What is the bacteria level at Gazos Creek Access (Peninsula, North)?
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The latest reading at Gazos Creek Access (Peninsula, North) shows 30-day enterococcus geomean at 14 MPN/100mL (EPA geomean limit: 35); enterococcus at 10 MPN/100mL (EPA single-sample limit: 104); and E. coli at 20 MPN/100mL (EPA single-sample limit: 235).
Does rain affect water quality at Gazos Creek Access (Peninsula, North)?
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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 Gazos Creek Access (Peninsula, North) located?
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Gazos Creek Access (Peninsula, North) is located in the Peninsula area of the San Francisco Bay region (coordinates: 37.1653°N, 122.3630°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 Gazos Creek Access (Peninsula, North) 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.