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Assessment of Fecal Indicator Bacteria (Enterococci) within a Recreational Waterway
Location: 55
Mentor: Dr. Helena Solo-Gabriele
The Parkview Canal (PVC) is a waterway located in Miami Beach, Florida, that has been found to contain significantly high levels of fecal indicator bacteria, enterococci. The current study aims to identify the sources and establish effective remediation measures, as the waterway contamination may pose increased health risks to recreational users. Samples were collected from groundwater, stormwater, and PVC waters to determine these sources. Samples were analyzed for enterococci levels and microbial source tracking (MST) markers, such as dog, bird, and human fecal markers. Results showed varied enterococci levels in groundwater samples; the highest concentrations were found in stormwater and consistently elevated levels in the PVC waters, with stormwater also emerging as a major pathway for contamination. MST data identified bird waste as the most significant canal contaminant. Short-term mitigation strategies implemented by the City of Miami Beach have included increased street sweeping and waste management. Future plans include upgrades to infrastructure, such as stormwater treatment systems. Results show an overall decrease in enterococci levels due to short-term mitigation strategies. However, concentrations remain elevated, requiring additional future remediation to reduce enterococci to safe levels. This study highlights the need for mitigation and systemic interventions to prevent contamination and protect public health, restoring the PVC as a recreational site.
