Lake · Monroe County · FL

Is Oyster Bay safe to swim?

Clear to swim

No advisory or algae bloom reported for this water today.

Updated July 18, 2026 · EPA CyAN satellite

Recent rain

0.2 in

Water type

Lake

Last updated

Jul 18

Bacteria

E. coli, fecal

Clear to swim

Tested

No advisory

Sampled Jul 18 · state beach program

Blue-green algae

cyanobacteria

Not monitored

Tested

Not monitored

Before you get in

Conditions change fast. Blooms and bacteria move with wind, rain, and runoff, and monitoring lags real time, so always look before you get in.

Skip water that is scummy or discolored, and keep children and dogs out of visible algae.

SwimZone for iPhone · launching soon

Know before you get in at Oyster Bay.

Get an alert the day a bacteria or algae advisory goes up.

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