Longboat Key - Bayfront Park Water Quality

Sarasota County, Florida

Good

The latest test found low bacteria levels (35 or fewer per 100 mL).

Latest test
Nov 3, 2026 (2 days ago)
Enterococci
20 per 100 mL
Past 12 months
18 of 20 tests Good

Results over time

101001000Jun 22, 2026: 10 per 100 mL (Good)Jun 29, 2026: 10 per 100 mL (Good)Jul 7, 2026: 10 per 100 mL (Good)Jul 13, 2026: 10 per 100 mL (Good)Jul 20, 2026: 10 per 100 mL (Good)Jul 27, 2026: 52 per 100 mL (Moderate)Aug 3, 2026: 10 per 100 mL (Good)Aug 10, 2026: 52 per 100 mL (Moderate)Aug 17, 2026: 10 per 100 mL (Good)Aug 24, 2026: 10 per 100 mL (Good)Aug 31, 2026: 10 per 100 mL (Good)Sep 8, 2026: 10 per 100 mL (Good)Sep 14, 2026: 10 per 100 mL (Good)Sep 21, 2026: 10 per 100 mL (Good)Sep 28, 2026: 10 per 100 mL (Good)Oct 5, 2026: 10 per 100 mL (Good)Oct 12, 2026: 10 per 100 mL (Good)Oct 19, 2026: 10 per 100 mL (Good)Oct 26, 2026: 10 per 100 mL (Good)Nov 3, 2026: 20 per 100 mL (Good)
Enterococci per 100 mL, log scale. Lines mark the Moderate (36) and Poor (71) levels.

Recent tests

DateEnterococci per 100 mLRating
Nov 3, 202620Good
Oct 26, 202610Good
Oct 19, 202610Good
Oct 12, 202610Good
Oct 5, 202610Good
Sep 28, 202610Good
Sep 21, 202610Good
Sep 14, 202610Good
Sep 8, 202610Good
Aug 31, 202610Good
Aug 24, 202610Good
Aug 17, 202610Good
Aug 10, 202652Moderate
Aug 3, 202610Good
Jul 27, 202652Moderate
Jul 20, 202610Good

The long view

The state has 20 tests on record for Longboat Key - Bayfront Park over 1 year, starting June 2026. In the last 10 years, 0 tests of 20 (0%) came back Poor, below the rate for all Florida sampled beaches (6.1%). Bacteria levels usually jump after heavy rain, when stormwater washes to the shore, and drop again within a day or two.

Nearby sampled beaches

About this site

Sampling site LONGBOAT KEY - BAYFRONT PARK (Sarasota County, EPA beach ID ), at 27.38671, -82.64040. Results are from the Florida Department of Health's Healthy Beaches Program; years before 2026 come from the state's submissions to EPA's Water Quality Portal.