Blue Mountain Beach Water Quality

Walton County, Florida

Good

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

Latest test
Nov 2, 2026 (3 days ago)
Enterococci
<10 per 100 mL
Past 12 months
20 of 20 tests Good

Results over time

101001000Mar 1, 2022: 10 per 100 mL (Good)Mar 15, 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)May 9, 2022: 10 per 100 mL (Good)May 31, 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 26, 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: 20 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: 10 per 100 mL (Good)Jul 10, 2023: 30 per 100 mL (Good)Jul 24, 2023: 10 per 100 mL (Good)Aug 7, 2023: 52 per 100 mL (Moderate)Aug 21, 2023: 10 per 100 mL (Good)Sep 5, 2023: 20 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: 10 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: 10 per 100 mL (Good)Aug 19, 2024: 10 per 100 mL (Good)Sep 3, 2024: 10 per 100 mL (Good)Sep 16, 2024: 31 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: 30 per 100 mL (Good)May 12, 2025: 20 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: 41 per 100 mL (Moderate)Jul 21, 2025: 10 per 100 mL (Good)Aug 4, 2025: 85 per 100 mL (Poor)Aug 6, 2025: 10 per 100 mL (Good)Aug 18, 2025: 51 per 100 mL (Moderate)Sep 2, 2025: 30 per 100 mL (Good)Sep 15, 2025: 10 per 100 mL (Good)Sep 29, 2025: 10 per 100 mL (Good)Oct 13, 2025: 10 per 100 mL (Good)Oct 30, 2025: 10 per 100 mL (Good)Jun 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: 20 per 100 mL (Good)Aug 3, 2026: <10 per 100 mL (Good)Aug 10, 2026: <10 per 100 mL (Good)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: 20 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 2, 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
Nov 2, 2026<10Good
Oct 26, 2026<10Good
Oct 19, 202610Good
Oct 12, 2026<10Good
Oct 5, 202620Good
Sep 28, 2026<10Good
Sep 21, 2026<10Good
Sep 14, 2026<10Good
Sep 8, 202610Good
Aug 31, 2026<10Good
Aug 24, 202610Good
Aug 17, 2026<10Good
Aug 10, 2026<10Good
Aug 3, 2026<10Good
Jul 27, 202620Good
Jul 20, 2026<10Good

The long view

The state has 970 tests on record for Blue Mountain Beach over 27 years, starting August 2000. In the last 10 years, 24 tests of 249 (10%) 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 BLUE MOUNTAIN BEACH (Walton County, EPA beach ID FL500531), at 30.33753, -86.20103. 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.