Grayton Beach Water Quality

Walton County, Florida

Good

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

Latest test
Oct 26, 2026 (10 days ago)
Enterococci
<10 per 100 mL
Past 12 months
18 of 18 tests Good

Results over time

101001000Mar 1, 2022: 10 per 100 mL (Good)Mar 29, 2022: 10 per 100 mL (Good)Apr 12, 2022: 10 per 100 mL (Good)Apr 25, 2022: 10 per 100 mL (Good)Jun 14, 2022: 20 per 100 mL (Good)Jun 28, 2022: 10 per 100 mL (Good)Jul 11, 2022: 10 per 100 mL (Good)Jul 25, 2022: 10 per 100 mL (Good)Aug 8, 2022: 10 per 100 mL (Good)Aug 23, 2022: 20 per 100 mL (Good)Sep 6, 2022: 10 per 100 mL (Good)Sep 20, 2022: 10 per 100 mL (Good)Mar 7, 2023: 10 per 100 mL (Good)Mar 21, 2023: 10 per 100 mL (Good)Apr 3, 2023: 10 per 100 mL (Good)Apr 18, 2023: 10 per 100 mL (Good)May 1, 2023: 10 per 100 mL (Good)May 15, 2023: 10 per 100 mL (Good)May 30, 2023: 10 per 100 mL (Good)Jun 12, 2023: 10 per 100 mL (Good)Jun 26, 2023: 96 per 100 mL (Poor)Jun 27, 2023: 10 per 100 mL (Good)Jul 10, 2023: 41 per 100 mL (Moderate)Jul 24, 2023: 414 per 100 mL (Poor)Jul 26, 2023: 74 per 100 mL (Poor)Jul 28, 2023: 74 per 100 mL (Poor)Aug 7, 2023: 10 per 100 mL (Good)Aug 21, 2023: 10 per 100 mL (Good)Sep 5, 2023: 10 per 100 mL (Good)Sep 18, 2023: 41 per 100 mL (Moderate)Oct 2, 2023: 10 per 100 mL (Good)Oct 16, 2023: 10 per 100 mL (Good)Oct 30, 2023: 10 per 100 mL (Good)Mar 4, 2024: 10 per 100 mL (Good)Mar 18, 2024: 20 per 100 mL (Good)Apr 1, 2024: 10 per 100 mL (Good)Apr 15, 2024: 10 per 100 mL (Good)Apr 29, 2024: 10 per 100 mL (Good)May 13, 2024: 10 per 100 mL (Good)May 28, 2024: 10 per 100 mL (Good)Jun 10, 2024: 10 per 100 mL (Good)Jun 24, 2024: 10 per 100 mL (Good)Jul 8, 2024: 10 per 100 mL (Good)Jul 22, 2024: 10 per 100 mL (Good)Aug 5, 2024: 41 per 100 mL (Moderate)Aug 19, 2024: 20 per 100 mL (Good)Sep 3, 2024: 10 per 100 mL (Good)Sep 16, 2024: 10 per 100 mL (Good)Sep 30, 2024: 10 per 100 mL (Good)Oct 14, 2024: 10 per 100 mL (Good)Oct 28, 2024: 10 per 100 mL (Good)Mar 3, 2025: 10 per 100 mL (Good)Mar 17, 2025: 10 per 100 mL (Good)Apr 14, 2025: 10 per 100 mL (Good)Apr 28, 2025: 10 per 100 mL (Good)May 12, 2025: 134 per 100 mL (Poor)May 14, 2025: 10 per 100 mL (Good)May 27, 2025: 10 per 100 mL (Good)Jun 9, 2025: 10 per 100 mL (Good)Jun 23, 2025: 10 per 100 mL (Good)Jul 7, 2025: 20 per 100 mL (Good)Jul 21, 2025: 10 per 100 mL (Good)Aug 4, 2025: 10 per 100 mL (Good)Aug 18, 2025: 10 per 100 mL (Good)Sep 15, 2025: 20 per 100 mL (Good)Sep 29, 2025: 10 per 100 mL (Good)Oct 13, 2025: 10 per 100 mL (Good)Oct 27, 2025: <10 per 100 mL (Good)Mar 2, 2026: <10 per 100 mL (Good)Mar 16, 2026: <10 per 100 mL (Good)Mar 30, 2026: <10 per 100 mL (Good)Apr 13, 2026: <10 per 100 mL (Good)Apr 27, 2026: 10 per 100 mL (Good)May 26, 2026: <10 per 100 mL (Good)Jun 1, 2026: <10 per 100 mL (Good)Jun 8, 2026: <10 per 100 mL (Good)Jun 22, 2026: <10 per 100 mL (Good)Jul 7, 2026: 30 per 100 mL (Good)Jul 20, 2026: <10 per 100 mL (Good)Aug 3, 2026: 20 per 100 mL (Good)Aug 17, 2026: 10 per 100 mL (Good)Aug 31, 2026: <10 per 100 mL (Good)Sep 14, 2026: 30 per 100 mL (Good)Sep 28, 2026: <10 per 100 mL (Good)Oct 12, 2026: 31 per 100 mL (Good)Oct 26, 2026: <10 per 100 mL (Good)2023202420252026
Enterococci per 100 mL, log scale. Lines mark the Moderate (36) and Poor (71) levels.

Recent tests

DateEnterococci per 100 mLRating
Oct 26, 2026<10Good
Oct 12, 202631Good
Sep 28, 2026<10Good
Sep 14, 202630Good
Aug 31, 2026<10Good
Aug 17, 202610Good
Aug 3, 202620Good
Jul 20, 2026<10Good
Jul 7, 202630Good
Jun 22, 2026<10Good
Jun 8, 2026<10Good
Jun 1, 2026<10Good
May 26, 2026<10Good
Apr 27, 202610Good
Apr 13, 2026<10Good
Mar 30, 2026<10Good

The long view

The state has 970 tests on record for Grayton Beach over 27 years, starting August 2000. In the last 10 years, 21 tests of 241 (9%) came back Poor, 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 GRAYTON BEACH (Walton County, EPA beach ID FL435018), at 30.32693, -86.16461. 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.