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Volunteer monitoring links rain events to bacteria spikes; DNA tests so far show no clear human source
Summary
Heal Our Harbor and partner volunteers reported 18 months of canal monitoring that found enterococci spikes after heavy rain. Preliminary DNA analyses did not indicate human sewage, but researchers said the study is ongoing and recommended expanded monitoring and coordination with FDEP to refine source tracking.
At a Jan. 6 workshop, volunteers and scientists with Heal Our Harbor presented 18 months of citizen-run water-quality monitoring across the Punta Gorda canal system and reported a consistent correlation: rainfall events often precede measurable increases in enterococci, an indicator bacteria used in Florida water-quality assessments.
Karen McKay, the volunteer coordinator and project manager for the Citizens Partnership for Clean Canals, described the program funded by three Rotary Club grants and a Charlotte County Marine Advisory Committee grant that began in April 2024 and expanded from four sampling sites to 10. She said trained…
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