State of the River report raises red flags

The 12th Annual State of the River report for the lower St. Johns River basin shows a striking jump in phosphorus as well as elevated levels of metals, continued loss of wetlands, and increasing impacts from saltwater intrusion and sea-level rise.

The report not only indicates an increase in phosphorous levels that are fueling frequent blue-green algae outbreaks, but also shows that sea-level rise from climate change and a legacy of dredging are causing salinity to rise and saltwater to move further upriver. This saltwater intrusion has “potential negative impacts on submerged aquatic vegetation,” undermining the river’s ability to filter out excess pollution and provide habitat for numerous aquatic organisms.

At the same time, South Florida is transporting its sewage sludge, a byproduct of wastewater treatment, to the head waters region of the St. Johns for disposal on farm and ranch lands. Sewage sludge contains high levels of phosphorus as well as a host of metals not removed in the treatment process. Since the St. Johns River flows north, excess pollution in its headwaters will eventually reach north Florida. Without immediate action to stop sewage sludge, which is also known as Biosolids, from being dumped in our watershed, north Florida faces a future of algal blooms and impact to human and ecosystem health, according to the report.

“There are early indicators that phosphorus is rising,” said Gerry Pinto, chief scientist for the 2019 State of the River Report. “While the report card focuses on five-year trends, we do see an uptick in phosphorus and that is concerning for the lower St. Johns.”

The 2019 River report showed several interesting findings:

  • Total nitrogen and phosphorus levels remain unsatisfactory, exceeding state water quality standards. An abrupt uptick in phosphorous occurred in 2018.
  • Metals, including arsenic, cadmium, lead, silver, and mercury show elevated levels and a unique pattern from the 2016-2018 previously downward trend.
  • Sea-level rise is increasing groundwater levels. This reduces the capacity of the ground to hold and store nutrients and rainfall, resulting in more runoff, leaching and pollution.
  • Saltwater intrusion is damaging wetlands and submerged vegetation that are critical to the river’s health.
  • Wetland losses continue, due to increased land development.
  • Submerged vegetation destabilized by drought and back-to-back hurricanes has seen limited recovery.

Stephanie Freeman, chair of the St. Johns Riverkeeper Water Policy Group is also concerned. “As a mom, I am most concerned about the increase in metals being detected in our waterways,” she said. “This newly released report makes me not only fear for the health of our river, but also the exposure to our children. As a family that fishes, boats, and kayaks with my kids, I want my children to be able to enjoy our waterways without worrying about the harmful effects of metals, especially lead, in our waters.”

Florida must prioritize a comprehensive statewide solution to deal with human waste,” said Lisa Rinaman, the St. Johns Riverkeeper. “While the state is growing by 900 people a day, Florida must have a sustainable plan to dispose of human waste without polluting our waterways or threatening human health.

“This report underscores the fact that for Florida to be truly resilient to the growing threat of sea-level rise, we have to make better decisions to offset impacts,” Rinaman continued. “We must protect wetlands, deny permits that accelerate impacts, and fortify our river for future generations.”

The St. Johns Riverkeeper is circulating a petition asking for the same protections as South Florida to protect water quality in the St. Johns River from sewage sludge. To date, more than 13,000 have signed the petition. To read and sign the petition, go to www.stjohnsriverkeeper.org.

1 Star2 Stars3 Stars4 Stars5 Stars (No Ratings Yet)
Loading...

You must be logged in to post a comment Login