Beach · Miami-dade County · FL
Is COLLINS PARK-21ST STREET safe to swim?
Recent heavy rain may have spiked bacteria since the last clear sample.
Updated July 19, 2026 · Florida beach program (EPA BEACON)
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Know before you get in at COLLINS PARK-21ST STREET.
Get an alert the day a bacteria or algae advisory goes up.
What's in the water at COLLINS PARK-21ST STREET right now
As of July 19, 2026, COLLINS PARK-21ST STREET in Miami-dade County, Florida carries a swim caution. Blue-green algae are not currently monitored at this water. No fecal-bacteria advisory is posted (state beach program). Rainfall over the past week totaled 1.7 in, which can wash bacteria and nutrients into the water.
Blue-green algae at COLLINS PARK-21ST STREET
COLLINS PARK-21ST STREET is a lake in Miami-dade County, Florida. Blue-green algae are not currently monitored at this water.
Blue-green algae (cyanobacteria) blooms are most common from midsummer into early fall, when the water is warm, calm, and rich in nutrients from runoff. They can produce toxins that make people sick and can be rapidly fatal to dogs, so skip water that looks green, scummy, or like spilled paint, and keep children and pets out of it.
Frequently asked: swimming in COLLINS PARK-21ST STREET
- Is it safe to swim in COLLINS PARK-21ST STREET right now?
- COLLINS PARK-21ST STREET carries a swim caution today. Blue-green algae are not currently monitored at this water. Conditions can change quickly with wind, heat, and rain, so check the posted signs and look at the water before you get in.
- Does COLLINS PARK-21ST STREET have blue-green algae (cyanobacteria)?
- Blue-green algae are not currently monitored at COLLINS PARK-21ST STREET. Watch for green, blue-green, or paint-like scum and avoid the water if you see it.
- Can dogs swim in COLLINS PARK-21ST STREET?
- No bloom is detected at COLLINS PARK-21ST STREET today, but dogs are much more vulnerable to blue-green algae than people, and blooms can form within hours. Always keep dogs away from water that looks green, scummy, or discolored, and rinse them off after swimming.
- How many Florida lakes and beaches have swim advisories today?
- Today, 97 Florida waters are under a swim advisory and 330 more warrant caution, out of 779 monitored waters SwimZone tracks in the state.
- How is COLLINS PARK-21ST STREET's water quality measured?
- SwimZone builds this read from EPA CyAN satellite imagery for blue-green algae, official beach and fecal-bacteria advisories where a program monitors COLLINS PARK-21ST STREET, and a recent-rainfall overlay, all refreshed daily. It was last updated July 19, 2026.