City of Key Colony Beach Official City Website

Press Release: Thursday, November 5th, 2026 Issued by: The Florida Department of Health in Monroe County To: Residents and Visitors of the Florida Keys

Beach water quality testing performed by the Florida Department of Health in Monroe County has indicated elevated levels of enteric bacteria (enterococci) in the near shore waters at the following beaches: Jonh Pennekamp State Park Beach, Harry Harris Park Beach, both located in Key Largo; Founder’s Park Beach, Islamorada Library Beach both located in Islamorada; Cocoplum Beach located in Marathon; and Bahia Honda Oceanside Beach located in Big Pine Key. Advisories have been issued for these locations.
The previous health advisory issue for Ann’s Beach has been lifted and discontinued.

The presence of enteric bacteria is an indication of fecal pollution, which may come from storm water runoff, pets, wildlife and human sewage.  These bacteria may cause human disease, infections, or rashes.  The Department of Health advises the public not to swim or practice other water-related activities in the near shore waters at these locations.  This notice will remain in effect until bacteriological results show that the water is safe for such purposes.

The purpose of the Healthy Beaches Monitoring Program is to determine Florida’s beach water quality.

NAME         CITY ENTEROCOCCUS WATER QUALITY ADVISORY?
ANNE’S BEACH ISLAMORADA                51 MODERATE NO
BAHIA HONDA BAYSIDE BEACH BIG PINE KEY                10 GOOD NO
BAHIA HONDA OCEANSIDE BEACH BIG PINE KEY                98 POOR YES
BAHIA HONDA SANDSPUR BEACH BIG PINE KEY                 1 GOOD NO
COCOPLUM BEACH MARATHON                74 POOR YES
CURRY HAMMOCK S.P BEACH MARATHON                41 MODERATE NO
FOUNDERS PARK BEACH ISLAMORADA               122 POOR YES
FT ZACHARY TAYLOR S.P.  BEACH KEY WEST                10   GOOD NO
HARRY HARRIS PARK BEACH KEY LARGO               285 POOR YES
HIGGS BEACH KEY WEST                10 GOOD NO
ISLAMORADA LIBRARY BEACH ISLAMORADA               187 POOR YES
JOHN PENNEKAMP S.P.  BEACH KEY LARGO               189 POOR YES
SIMONTON BEACH KEY WEST                10 GOOD NO
SMATHERS BEACH KEY WEST               10 GOOD NO
SOMBRERO BEACH MARATHON                41 MODERATE NO
SOUTH BEACH KEY WEST                53 MODERATE NO
SUNSET PARK BEACH KEY COLONY                20   GOOD          NO
VETERAN’S BEACH BIG PINE KEY                 1   GOOD          NO