Collier County Beach Water Quality

5 monitored beaches on the Gulf Coast

5 Good 5% avg risk

Collier County Beaches — Ranked by Water Quality

Barefoot Beach Preserve

Collier County · Gulf Coast

GOOD
Last tested: Mar 15, 2026 16 CFU/100mL

Vanderbilt Beach

Collier County · Gulf Coast

GOOD
Last tested: Mar 15, 2026 12 CFU/100mL

Delnor-Wiggins Pass State Park

Collier County · Gulf Coast

GOOD
Last tested: Mar 15, 2026 13 CFU/100mL

Marco Island Beach

Collier County · Gulf Coast

GOOD
Last tested: Mar 15, 2026 16 CFU/100mL

Naples Beach

Collier County · Gulf Coast

GOOD
Last tested: Mar 15, 2026 13 CFU/100mL

Find Beaches Near

Naples Marco Island Sanibel Island Cape Coral

About Collier County Beach Water Quality

Collier County has 5 beaches monitored through the Florida DOH Healthy Beaches Program on the Gulf Coast. Based on the past 12 months of enterococcus bacteria testing, the county's average risk rating is 5% — meaning 5% of historical tests returned poor results (above 70.5 CFU/100mL).

Water quality can vary significantly between beaches depending on proximity to storm drains, inlets, and urban runoff sources. Always check individual beach conditions before swimming, especially after rainfall.

Beach Safety Guides

Is It Safe to Swim After Rain?

Understanding Advisories

Cleanest Beaches in Florida

How Bacteria Testing Works

Other Florida Counties

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