Bob Graham Beach Water Quality

Martin 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
18 of 20 tests Good, 1 Poor

Results over time

101001000Feb 17, 2026: 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 11, 2026: 10 per 100 mL (Good)May 26, 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: 53 per 100 mL (Moderate)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: 10 per 100 mL (Good)Sep 28, 2026: 10 per 100 mL (Good)Oct 12, 2026: 10 per 100 mL (Good)Oct 26, 2026: 124 per 100 mL (Poor)Nov 2, 2026: 10 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 2, 202610Good
Oct 26, 2026124Poor Advisory
Oct 12, 202610Good
Sep 28, 202610Good
Sep 14, 202610Good
Aug 31, 202610Good
Aug 17, 202610Good
Aug 3, 202620Good
Jul 20, 202610Good
Jul 7, 202653Moderate
Jun 22, 202610Good
Jun 8, 202610Good
May 26, 202610Good
May 11, 202610Good
Apr 27, 202610Good
Apr 13, 202610Good

The long view

The state has 494 tests on record for Bob Graham Beach over 25 years, starting August 2002. In the last 10 years, 1 test of 20 (5%) came back Poor, close to 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 BOB GRAHAM BEACH (Martin County, EPA beach ID FL609301), at 27.24413, -80.19040. 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.