Perfluorobutanesulfonic acid
Part of a class of synthetic compounds known as polyfluoroalkyl substances (PFAS) widely used to make products more resistant to stains, water, and grease. For example, PFAS have been used in nonstick cookware, textiles, food packaging, electronics, cleaners, and many other consumer products.
EPA MCLG Level
0.1 ppb
Maximum level that poses minimal health risk based on the latest science
Health Effects
As with many PFAS compounds, research into the health effects of PFBS is rapidly evolving. Animal studies have identified associations between PFBS and toxicity to the thyroid, liver, and kidneys as well as adverse effects to fetal development. Studies suggest that pregnant women and their developing fetuses are the most susceptible subpopulations for these adverse health effects due to hormone disruption.
Affected Organs & Systems:
Common Sources
- Not naturally occurring, so its widespread detection in surface and groundwater sources can be attributed to human release
- Includes waste water discharge and industrial waste from PFAS manufacturing and processing facilities
- Elevated levels of PFBS are often found near industrial sites employing PFAS or sites using aqueous fire-fighting foams (AFFFs), including air bases and fire training areas
How to Remove It
Water filters certified under the following NSF standards are effective at removing Perfluorobutanesulfonic acid:
EPA MCLG Level
The EPA MCLG represents the maximum level that poses minimal health risk based on the latest scientific research. It's often more protective than federal legal limits.
Contaminant Type
Perfluorobutanesulfonic acid is classified as a PFAS contaminant.
This contaminant primarily affects the thyroid, developmental, and other systems.
Check Your Water
Find out if Perfluorobutanesulfonic acid is in your tap water.
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