Collier County · Naples / Marco Island · Gulf Coast

Marco Island Beach recent bacteria spikes

This page is for people who want to know whether Marco Island Beach has shown recent warning signs, not just what the most recent badge says.

GOOD Latest sample: May 11, 2026 10 CFU/100mL 8% poor-sample history

Main Beach Page History Alternatives After Rain Recent Spikes

Current picture

GOOD on the latest sample at 10 CFU/100mL.

Long-term context

1 poor samples and 1 non-good samples in the displayed history.

Rain still matters

Stormwater can make this page stale faster than the normal testing schedule, especially after heavy rain.

Non-good samples

1

moderate or poor samples in the displayed history.

Latest non-good sample

December 30, 2025

This helps you see whether the trouble signs are old or relatively recent.

Poor samples

1

poor samples in the displayed history at this beach.

Water Quality History — Last 12 Months

35.4

70.5

13

Oct

15

Oct

17

Oct

17

Nov

12

Nov

16

Dec

76

Dec

13

Jan

13

Jan

13

Feb

18

Feb

16

Mar

Values in CFU/100mL. Green = Good (≤35.4), Yellow = Moderate (35.5–70.4), Red = Poor (≥70.5)

Nearby Beaches With Fewer Warning Signs

History view →

These nearby beaches are sorted toward steadier after-rain options so you can compare Marco Island Beach against places with fewer warning signs.

Vanderbilt Beach

Collier County · Gulf Coast · 22 mi away

Tested May 11, 2026 10 CFU/100mL

No non-good samples in the displayed history

Bonita Beach

Lee County · Gulf Coast · 28 mi away

Tested May 11, 2026 10 CFU/100mL

No non-good samples in the displayed history

Fort Myers Beach

Lee County · Gulf Coast · 38 mi away

Tested Apr 6, 2026 10 CFU/100mL

No non-good samples in the displayed history

Sanibel Island Beach

Lee County · Gulf Coast · 40 mi away

Tested May 11, 2026 10 CFU/100mL

No non-good samples in the displayed history

Barefoot Beach Preserve

Collier County · Gulf Coast · 24 mi away

Tested May 11, 2026 20 CFU/100mL

No non-good samples in the displayed history

Delnor-Wiggins Pass State Park

Collier County · Gulf Coast · 25 mi away

Tested May 11, 2026 20 CFU/100mL

Latest non-good sample Oct 1

Recent Warning-Sign Samples

Full history →

December 30, 2025

76 CFU/100mL · POOR

POOR

Keep Exploring Nearby

Collier County Naples / Marco Island Beaches near Naples Beaches near Marco Island

How To Use This Page

This page is for people who want to know whether Marco Island Beach has shown recent warning signs, not just what the most recent badge says.

Use this view as a decision aid, not a guarantee. The latest sample, visible runoff, and recent weather still matter more than any single list or chart.

If you want the main same-day answer instead, go back to the Marco Island Beach beach page.

Data from FL DOH Healthy Beaches Program. This is an independent project — check with Florida DOH for official conditions.