PFAS GUIDE
How Do PFAS Get Into the Body?
Last updated: June 2, 2026
Most people take in PFAS primarily through contaminated drinking water. Other routes include certain foods, grease-resistant food packaging, some consumer products, household dust, and workplace exposure. Because PFAS resist breaking down, repeated low-level intake from these sources can build up in the body over time.
For the full overview, start with What Are PFAS (Forever Chemicals)?
This page provides general educational information only and does not constitute medical or legal advice.
- Contaminated drinking water is the most commonly cited route.
- Diet and food packaging are meaningful secondary sources.
- Household dust matters, especially for young children.
- Certain jobs carry higher occupational exposure.
Drinking Water
The route discussed most often is drinking water, particularly in communities near military bases, airports, landfills, or industrial facilities where PFAS were used or released. The U.S. Geological Survey has estimated that a significant share of U.S. tap water contains at least one type of PFAS. To sort which exposure path may apply to you, the free PFAS exposure checker on Lawsuit Center walks through it in four questions.
Food and Food Packaging
PFAS can reach the diet through fish from contaminated water, produce grown in contaminated soil, and some animal products. Grease-resistant packaging — certain wrappers, microwave popcorn bags, and takeout containers — can also transfer small amounts of PFAS into food.
Consumer Products and Dust
Stain- and water-resistant treatments on carpets, upholstery, and clothing, along with some cosmetics, can shed PFAS into household dust. Because young children spend time on the floor and put hands in their mouths, dust is considered a more notable route for them. See PFAS Cosmetics Lawsuits and PFAS Consumer Product Lawsuits.
Occupational Exposure
People who work in chemical manufacturing, and firefighters who have used aqueous film-forming foam (AFFF), can face higher exposure. Firefighting foam is covered in AFFF Firefighting Foam Lawsuits.
What Happens After Exposure
Once absorbed, many PFAS bind to proteins in the blood and distribute to organs such as the liver and kidneys. They tend to leave the body slowly — see How Long Do PFAS Stay in the Body?
Not sure which exposure path applies to your situation? The free PFAS exposure checker on Lawsuit Center sorts drinking water, firefighting foam, occupational, and farm/biosolids paths in four short questions. No contact info required to see your result.
Try the Free PFAS Exposure CheckerCommon Questions
Is drinking water the main source of PFAS exposure?
For many people it is the largest single source, especially near contamination sites. Diet and consumer products also contribute.
Can you absorb PFAS through the skin?
Ingestion and inhalation of dust are generally considered the more significant routes; skin absorption is usually viewed as a smaller contributor for most people.
