South Florida’s drinking water—largely sourced from groundwater and aquifers—has come under increasing scrutiny due to the presence of so-called “forever chemicals.” These substances, known scientifically as PFAS, are drawing concern from scientists, regulators, and public health officials alike.
What Are “Forever Chemicals”?
“Forever chemicals” refer to a large group of man-made compounds called per- and polyfluoroalkyl substances (PFAS). These chemicals have been used since the 1940s in a wide range of industrial processes and consumer products, including:
- Nonstick cookware (like Teflon)
- Water- and stain-resistant fabrics
- Food packaging (e.g., fast-food wrappers)
- Firefighting foams
- Cosmetics and cleaning products
What makes PFAS unique—and problematic—is their chemical structure. They contain extremely strong carbon-fluorine bonds, which makes them highly resistant to breaking down in the environment. As a result, they can persist for decades in water, soil, and even the human body.
Scientists estimate there are thousands of different PFAS compounds (over 4,700 identified), many of which are still being studied.
Forever Chemicals in South Florida Water
Widespread Detection
Recent research and monitoring efforts have confirmed that PFAS are present in water systems across Florida—including South Florida.
- A University of Florida study found PFAS in 63% of spring water samples tested statewide, indicating widespread environmental contamination.
- In South Florida specifically, multiple municipalities—including areas in Miami-Dade and Broward counties—have been identified as PFAS “hotspots.”
- An estimated 8.9 million Floridians may be exposed to PFAS through drinking water.
Because South Florida relies heavily on groundwater and connected aquifer systems, contamination in one area can potentially spread or persist across regions.
Common PFAS Found in Florida
Among the many PFAS compounds, several have been most commonly detected in Florida water systems:
- PFOA (Perfluorooctanoic acid)
- PFOS (Perfluorooctane sulfonate)
- Other emerging or replacement PFAS (such as GenX and related compounds)
PFOA and PFOS are the most studied and historically widespread. They have been found in groundwater near:
- Military bases
- Airports
- Firefighter training sites
These locations are significant because firefighting foams—widely used for decades—are a major source of PFAS contamination.
How Do PFAS Get Into Drinking Water?
PFAS enter water systems through multiple pathways:
- Industrial discharge and manufacturing runoff
- Firefighting foam use at airports and military facilities
- Landfills and wastewater treatment plants
- Leaching from consumer products into soil and groundwater
Once in the environment, PFAS can migrate into rivers, lakes, and aquifers—and ultimately into municipal drinking water supplies.
Potential Health Effects
One of the biggest concerns surrounding PFAS is their ability to bioaccumulate—meaning they build up in the human body over time rather than being flushed out.
Research has linked PFAS exposure to a range of potential health risks, including:
Cancer Risks
- Kidney cancer
- Testicular cancer
Organ and Metabolic Effects
- Liver damage
- Increased cholesterol levels
Immune System Impacts
- Reduced immune response
- Decreased vaccine effectiveness
Developmental and Reproductive Effects
- Low birth weight
- Developmental delays in children
Hormonal Disruption
- Interference with endocrine (hormone) systems
Because PFAS can remain in the body for years—sometimes decades—the risk increases with prolonged exposure.
Regulation and Ongoing Concerns
The U.S. Environmental Protection Agency (EPA) has begun setting limits on certain PFAS in drinking water, particularly PFOA and PFOS. However:
- Regulations currently cover only a small number of PFAS compounds
- Thousands of other PFAS remain unregulated
- Testing and enforcement are still evolving
In Florida, monitoring is expanding, but full compliance with stricter federal standards is still in progress.
The Bottom Line
Forever chemicals are not a hypothetical risk—they are already present in South Florida’s water systems. While most municipal water still meets current regulatory standards, those standards are rapidly changing as scientists learn more about PFAS toxicity.
The key facts:
- PFAS are persistent, bioaccumulative, and widespread
- South Florida has documented contamination in multiple areas
- Long-term exposure is linked to serious health concerns
For residents and policymakers alike, the issue is shifting from discovery to mitigation—how to remove these chemicals from water supplies and reduce future contamination.