The document discusses fecal pollution in Puerto Rico's beaches. It notes that beaches are an important natural and economic resource but many suffer from pollution that can harm human health. The main cause of pollution is fecal waste from humans and animals. The study aims to determine the levels of E. coli bacteria at four beaches - in Fajardo, Ocean Park, La Guancha, and Boquerón - through monthly water sampling and analysis. This will identify which beaches have less fecal pollution and allow authorities to inform the public about beach safety. The results could lead to closing polluted beaches to protect public health.