City of Key Colony Beach Official City Website

Florida Keys Beach Water Test Results as of 9/9/2026

Press Release: Wednesday, September 9th, 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 located in Key Largo, Founder’s Park Beach, Islamorada Library Beach & Ann’s Beach all three located in Islamorada; Higgs Beach, South Beach & Simonton Beach all three located in Key West.

Advisories have been issued for these locations.

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                84 POOR YES
BAHIA HONDA BAYSIDE BEACH BIG PINE KEY                  1 GOOD NO
BAHIA HONDA OCEANSIDE BEACH BIG PINE KEY                  1 GOOD NO
BAHIA HONDA SANDSPUR BEACH BIG PINE KEY                  1 GOOD NO
COCOPLUM BEACH MARATHON                  1 GOOD NO
CURRY HAMMOCK S.P BEACH MARATHON                  1 GOOD NO
FOUNDERS PARK BEACH ISLAMORADA                135 POOR YES
FT ZACHARY TAYLOR S.P.  BEACH KEY WEST                 20   GOOD NO
HARRY HARRIS PARK BEACH KEY LARGO                 41 GOOD NO
HIGGS BEACH KEY WEST 75   POOR YES
ISLAMORADA LIBRARY BEACH ISLAMORADA                120 POOR YES
JOHN PENNEKAMP S.P.  BEACH KEY LARGO               1354 POOR YES
SIMONTON BEACH KEY WEST                 87 POOR YES
SMATHERS BEACH KEY WEST                10 GOOD NO
SOMBRERO BEACH MARATHON                 52 MODERATE NO
SOUTH BEACH KEY WEST               344    POOR YES
SUNSET PARK BEACH KEY COLONY                 1   GOOD          NO
VETERAN’S BEACH BIG PINE KEY                 1   GOOD          NO

 Water quality classifications are based upon:

United States Environmental Protection Agency’s (EPA’s) recommended criteria for enterococci is:

Good 0-35 Enterococcus sp. per 100 ml of marine water

Moderate 36-70 Enterococcus sp. per 100 ml of marine water

Poor 71 or Greater Enterococcus sp. per 100 ml of marine water

An Advisory is issued for a beach that samples in the “Poor” range of the EPA standards.

This should be considered a potential health risk to the bathing public.

If you have questions, please visit the Department of Health’s Internet Beach Water Quality website at:  www.tinyurl.com/monroebeaches, scroll to the bottom of the page or visit http://www.floridahealth.gov/index.html click on “Environmental Heath”, select “Beach Water Quality”, the Florida Healthy Beaches Program opens, scroll down and select Monroe County for your Beach Water Sampling Results for this test period.

Thank you, Bureau of Environmental Health