Pinellas County · Tampa Bay Area · Gulf Coast

Caladesi Island State Park Water Quality

GOOD

Water quality is GOOD — Safe for swimming

The most recent test at Caladesi Island State Park showed enterococcus bacteria levels of 12 CFU/100mL, which is well within the safe range (35.4 or below CFU/100mL). Conditions are considered safe for swimming and water activities.

Tested: Sunday, March 15, 2026
Reading: 12 CFU/100mL
Risk Rating: 0% poor results

Historical Risk Rating

0%

Caladesi Island State Park has an excellent track record. Only 0% of tests in the last 12 months returned poor results.

Water Quality History — Last 12 Months

35.4
70.5
17
Oct
15
Oct
17
Oct
16
Nov
18
Nov
14
Dec
12
Dec
18
Jan
18
Jan
15
Feb
17
Feb
12
Mar

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

Swimming After Rain

Rainfall can wash bacteria, fertilizers, and other pollutants into the ocean through stormwater runoff. The Florida DOH recommends waiting at least 72 hours after heavy rain before swimming, especially near inlets, canals, and river mouths. If it has rained recently in the Pinellas County area, use extra caution.

About Caladesi Island State Park

Accessible only by ferry or kayak, Caladesi Island has been voted America's best beach, offering unspoiled white sand and clear Gulf waters.

Pinellas County Tampa Bay Area Gulf Coast

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Learn More

Is It Safe to Swim After Rain?

Wait times, risk areas, and tips

Understanding Advisories

What the numbers and badges mean

Cleanest Beaches in Florida

Water quality rankings

How Bacteria Testing Works

CFU, sampling, and lab methods

Disclaimer: Water quality data is sourced from the Florida Department of Health Healthy Beaches Program. Conditions can change rapidly. This website provides informational estimates only — always check with Florida DOH for official, real-time beach conditions. Safe to Swim Florida is an independent project and is not affiliated with any government agency.