4 ms·

> Miami has been identified as the US city with the 3rd highest levels of PFAS pollution in groundwater among 44 locations assessed Do we know why? I don't th

> Miami has been identified as the US city with the 3rd highest levels of PFAS pollution in groundwater among 44 locations assessed Do we know why? I don't think a lot of manufacturing happens near Miami.

ggm 2y ago
In '78 I worked as a general dogsbody doing water quality analysis around the river forth estuary. Suspended solids, phosphate & nitrates from fertiliser factories and manufacturing alongside sewage outfalls were measured right upstream, to tidal limits and from the top north shore to the south. 100km or more. My constant tl;dr is that stuff moves, and whilst nothing like the tidal zone, groundwater is anything but static. My case? Estuarine. The Biscayne aquifer is limestone. Highly porous. Water will travel as water does. If anything even close has contamination its getting in, if there's transport from surface water into the aquifer. The stuff here says urban canals and groundwater flows definitely feed in. Any firestation testing foam? Its in. PFAS contamination from airport fire testing is a thing. https://www.evergladesfoundation.org/post/water-on-earth-explaining-the-wonders-of-the-biscayne-aquifer https://www.evergladesfoundation.org/post/water-on-earth-exp...
pengaru 2y ago
This article goes into some of alleged sources: https://news.fiu.edu/2023/how-pfas-forever-chemicals-are-getting-into-miamis-biscayne-bay-where-dolphins-fish-and-manatees-dine https://news.fiu.edu/2023/how-pfas-forever-chemicals-are-get...
greenavocado 2y ago
Firefighting foam used in airports is a major source that dwarfs the rest
alejohausner 2y ago
The article just below mentions two major sources: - failing septic systems, and spilled wastewater. Lots of household products like food packaging and carpets are coated with oil- and water-repellent PFAs. When you wash these products, the PFAs end in the waste water. - airports and military bases use a fire-fighting foam that is made from a PFA. Also, Kennedy space center uses fire-fighting foams (although it's far from Miami, but then again Florida is one big aquifer).

ggm 2y ago

In '78 I worked as a general dogsbody doing water quality analysis around the river forth estuary. Suspended solids, phosphate & nitrates from fertiliser factories and manufacturing alongside sewage outfalls were measured right upstream, to tidal limits and from the top north shore to the south. 100km or more. My constant tl;dr is that stuff moves, and whilst nothing like the tidal zone, groundwater is anything but static. My case? Estuarine. The Biscayne aquifer is limestone. Highly porous. Water will travel as water does. If anything even close has contamination its getting in, if there's transport from surface water into the aquifer. The stuff here says urban canals and groundwater flows definitely feed in. Any firestation testing foam? Its in. PFAS contamination from airport fire testing is a thing. https://www.evergladesfoundation.org/post/water-on-earth-explaining-the-wonders-of-the-biscayne-aquifer https://www.evergladesfoundation.org/post/water-on-earth-exp...

pengaru 2y ago

This article goes into some of alleged sources: https://news.fiu.edu/2023/how-pfas-forever-chemicals-are-getting-into-miamis-biscayne-bay-where-dolphins-fish-and-manatees-dine https://news.fiu.edu/2023/how-pfas-forever-chemicals-are-get...

greenavocado 2y ago

Firefighting foam used in airports is a major source that dwarfs the rest

alejohausner 2y ago

The article just below mentions two major sources: - failing septic systems, and spilled wastewater. Lots of household products like food packaging and carpets are coated with oil- and water-repellent PFAs. When you wash these products, the PFAs end in the waste water. - airports and military bases use a fire-fighting foam that is made from a PFA. Also, Kennedy space center uses fire-fighting foams (although it's far from Miami, but then again Florida is one big aquifer).