This page shows water quality results for beaches in Puerto Rico and the US Virgin Islands. The tests are performed by Surfrider Foundation-Rincon, the Puerto Rico Environmental Quality Board, Blue Flag Puerto Rico, and the CARICOOS team following EPA-approved Enterolert® protocols.
Click on the markers over the map for complete water quality information at the selected site. After clicking a marker, you can return the map to its default view by clicking on “Reset View” on the top left.
Types of water quality information available:
SAMPLES
Results of the latest sample collected by CARICOOS and/or partners. Values show the Most Probable Number (MPN) of Colony-Forming Units (CFU) of Enterococcus in 100 ml of seawater.
NOWCAST
Our best estimate of real-time beach water quality conditions. Data is presented as a percent chance of Enterococcus concentrations below the EPA-approved level, better known as the Beach Action Value (BAV, 70 MPN CFU/100 ml).
RATINGS
Our beach rating is based on the previous three months of test results at each site. Data is presented as a percentage of samples that were below the BAV during the three-month period.
HISTORIC DATA GRAPH
An interactive graph showing the the entire history of water quality results at each site.
