Anne's Beach Water Quality

Monroe County, Florida

Advisory

Health advisory: the state advises against swimming here until a retest comes back clean.

Latest test
Oct 20, 2026 (16 days ago)
Enterococci
97 per 100 mL
Past 12 months
9 of 20 tests Good, 10 Poor

Results over time

101001000Nov 9, 2021: 10 per 100 mL (Good)Dec 8, 2021: 10 per 100 mL (Good)Jan 4, 2022: 10 per 100 mL (Good)Feb 1, 2022: 42 per 100 mL (Moderate)Mar 1, 2022: 111 per 100 mL (Poor)Apr 12, 2022: 10 per 100 mL (Good)May 10, 2022: 10 per 100 mL (Good)Jun 7, 2022: 10 per 100 mL (Good)Jul 5, 2022: 10 per 100 mL (Good)Sep 13, 2022: 10 per 100 mL (Good)Oct 11, 2022: 20 per 100 mL (Good)Nov 8, 2022: 10 per 100 mL (Good)Dec 6, 2022: 10 per 100 mL (Good)Jan 3, 2023: 10 per 100 mL (Good)Feb 14, 2023: 42 per 100 mL (Moderate)Mar 14, 2023: 178 per 100 mL (Poor)Apr 25, 2023: 10 per 100 mL (Good)Jan 27, 2026: <10 per 100 mL (Good)Feb 10, 2026: <10 per 100 mL (Good)Feb 24, 2026: <10 per 100 mL (Good)Mar 10, 2026: <10 per 100 mL (Good)Mar 24, 2026: <10 per 100 mL (Good)Apr 7, 2026: 10 per 100 mL (Good)Apr 21, 2026: <10 per 100 mL (Good)May 5, 2026: 10 per 100 mL (Good)May 19, 2026: 298 per 100 mL (Poor)Jun 2, 2026: 160 per 100 mL (Poor)Jun 16, 2026: 86 per 100 mL (Poor)Jun 30, 2026: 30 per 100 mL (Good)Jul 14, 2026: 233 per 100 mL (Poor)Jul 28, 2026: 624 per 100 mL (Poor)Aug 11, 2026: 246 per 100 mL (Poor)Aug 25, 2026: 121 per 100 mL (Poor)Sep 8, 2026: 84 per 100 mL (Poor)Sep 22, 2026: 122 per 100 mL (Poor)Oct 6, 2026: 52 per 100 mL (Moderate)Oct 20, 2026: 97 per 100 mL (Poor)20222023202420252026
Enterococci per 100 mL, log scale. Lines mark the Moderate (36) and Poor (71) levels.

Recent tests

DateEnterococci per 100 mLRating
Oct 20, 202697Poor Advisory
Oct 6, 202652Moderate
Sep 22, 2026122Poor Advisory
Sep 8, 202684Poor Advisory
Aug 25, 2026121Poor Advisory
Aug 11, 2026246Poor Advisory
Jul 28, 2026624Poor Advisory
Jul 14, 2026233Poor Advisory
Jun 30, 202630Good
Jun 16, 202686Poor Advisory
Jun 2, 2026160Poor Advisory
May 19, 2026298Poor Advisory
May 5, 202610Good
Apr 21, 2026<10Good
Apr 7, 202610Good
Mar 24, 2026<10Good

The long view

The state has 577 tests on record for Anne's Beach over 27 years, starting August 2000. In the last 10 years, 12 tests of 56 (21%) came back Poor, well above 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 ANNE'S BEACH (Monroe County, EPA beach ID FL931734), at 24.84639, -80.74444. 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.