PFAS and Children
Why children face greater risk and what parents can do
Children are not small adults when it comes to toxic chemical exposure. Their developing bodies absorb more, process less, and carry the effects longer. PFAS exposure during pregnancy, infancy, and childhood carries risks that adult exposure at the same levels does not. This page explains why, what the science shows, and what parents can do to reduce their children’s exposure.
Why Children Are More Vulnerable
Several biological and behavioral factors make children more susceptible to PFAS than adults at the same exposure levels.
Developing systems are more sensitive
The immune system, endocrine system, brain, and reproductive organs are all under active development during pregnancy, infancy, and childhood. Disruption during these windows has lasting consequences. PFAS are endocrine disruptors, meaning they interfere with hormone signaling. Hormones regulate development. Interference during critical developmental windows can alter how systems form — changes that persist into adulthood and may not be reversible.
Higher relative intake
Children drink more water, eat more food, and breathe more air per pound of body weight than adults. If a child’s drinking water contains PFAS at the same concentration as an adult’s, the child receives a higher dose relative to body mass. This is a fundamental principle of pediatric toxicology and it applies directly to PFAS.
Hand-to-mouth behavior
Young children touch surfaces and put their hands in their mouths repeatedly throughout the day. PFAS shed from treated fabrics, carpeting, and upholstery into household dust. Children who play on PFAS-treated carpets and then put their hands in their mouths receive dust-based PFAS exposure that adults in the same home do not.
Longer time horizon for effects
A child exposed to PFAS at age two has decades ahead for those effects to manifest. A 30-year-old exposed at the same level has a shorter window. This is why the EPA and other regulatory agencies treat children and pregnant women as priority protected populations when setting PFAS standards.
Prenatal Exposure: Before Birth
PFAS cross the placental barrier. Studies consistently show that cord blood PFAS levels — measuring what a baby receives before birth — reflect the mother’s PFAS body burden. A 2021 study published in Environmental Health Perspectives found PFAS in cord blood samples from newborns across multiple U.S. regions, with levels correlating closely to maternal serum concentrations.
Prenatal PFAS exposure has been associated with the following outcomes in research studies:
Reduced birth weight
Multiple studies show an association between higher maternal PFAS levels and lower birth weight. Low birth weight is a risk factor for several long-term health outcomes.
Preterm birth
Some studies link higher prenatal PFAS exposure to increased risk of preterm delivery, though findings across studies are not entirely consistent.
Altered hormone levels
Prenatal PFAS exposure associates with changes in thyroid hormone levels in newborns, with potential implications for brain and metabolic development.
Immune effects
Children with higher prenatal PFAS exposure show reduced antibody responses to vaccines in childhood — a sign of impaired immune system development measurable years after birth.
Neurodevelopmental effects
Emerging research suggests associations between prenatal PFAS exposure and attention, behavior, and learning outcomes, though this research area is still developing.
Altered puberty timing
Some studies associate childhood PFAS exposure with earlier onset of puberty in girls, consistent with PFAS acting as endocrine disruptors during development.
PFAS in Breast Milk
PFAS transfer through breast milk. Studies have detected PFAS in breast milk samples globally, including in the United States. This is a genuine finding and it raises real questions for parents. The scientific and medical consensus, however, is clear: the benefits of breastfeeding for infant health substantially outweigh the risks of PFAS exposure through breast milk for most women living in areas without extreme contamination.
The American Academy of Pediatrics and the World Health Organization both recommend breastfeeding as the first choice for infant nutrition, with awareness of environmental contaminant exposure as a factor to discuss with a healthcare provider — particularly for mothers who live near known contamination sites, use contaminated well water, or have occupational PFAS exposure.
PFAS in Infant Formula and Baby Food
Powdered infant formula prepared with PFAS-contaminated tap water delivers PFAS to infants at high concentrations because infants consume large volumes of water relative to their body weight. If your tap water contains PFAS, this is the most important reason to use a certified filter for formula preparation.
Ready-to-feed liquid formula reduces water-based exposure but is not guaranteed to be PFAS-free. Some testing has detected PFAS in both powdered and ready-to-feed formulas, though levels vary by brand and production lot. The FDA is monitoring PFAS in infant formula but has not set limits specific to formula as of early 2026.
Commercially prepared baby food has also been found to contain low levels of PFAS in some studies, primarily from contaminated water used in processing and from packaging. Levels found in studies to date have generally been below regulatory thresholds, but the cumulative exposure picture for infants consuming formula plus baby food plus PFAS-containing tap water is not trivial.
How Children Are Exposed
Maternal PFAS body burden transfers to the developing fetus. No intervention exists after conception. Reducing maternal exposure before and during pregnancy is the only preventive action.
PFAS present in maternal serum transfer to breast milk. Levels decline over the course of lactation as the mother’s body burden decreases. Breastfeeding benefits generally outweigh this risk for most mothers.
The highest-volume daily exposure route after weaning. Children drink more water per pound of body weight than adults. Formula prepared with contaminated tap water concentrates PFAS exposure in infants.
Fast food, microwave popcorn, and other foods served in PFAS-coated packaging contribute to dietary exposure. Baby food in pouches or jars with PFAS-containing materials adds to infant exposure.
PFAS-treated carpets, upholstery, and furniture shed compounds into dust. Children who play on the floor and engage in hand-to-mouth behavior receive higher dust-based exposure than adults in the same home.
Some children’s products including stain-resistant clothing, waterproof outerwear, and certain personal care products for children have contained PFAS. Skin contact and mouthing of treated items contribute to exposure.
What Parents Can Do
1
Filter your drinking water. Install an NSF/ANSI Standard 58 certified reverse osmosis filter at your kitchen tap. Use filtered water for drinking, cooking, and formula preparation. This addresses the single highest-volume daily exposure source.
Verify filter certification at nsf.org before purchasing.
2
Check your water supply first. If your tap water tests below the EPA MCLs, your situation is less urgent than if it does not. Search ewg.org/tapwater with your zip code, or request your utility’s Consumer Confidence Report.
Private well? Arrange your own PFAS test. See Testing Your Water.
3
Replace worn non-stick cookware. Scratched or flaking non-stick surfaces release PFAS into food during cooking. Cast iron, stainless steel, and ceramic-coated alternatives are PFAS-free.
4
Reduce dust exposure for young children. Vacuum frequently with a HEPA-filter vacuum. Wash children’s hands regularly, especially before eating. If you have PFAS-treated carpeting, consider replacement with hard flooring or untreated rugs.
5
Avoid reheating food in its packaging. Fast food wrappers, microwave popcorn bags, and pizza boxes contain or have historically contained PFAS coatings. Transfer food to a glass or ceramic dish before microwaving.
6
Consult an attorney if you have been harmed. Look for PFAS-free, PFOA-free, or PFC-free labels on waterproof outerwear, rain gear, and bedding. Check the OEKO-TEX certification for textiles.
See our Safe Products Guide for specific product category guidance.
7
If you are pregnant, start now. Prenatal exposure is the earliest and in some ways most consequential window. Filtering your drinking water and reducing food packaging exposure during pregnancy reduces what transfers to your child before birth.
Quick Reference: Priority Actions by Life Stage
Life Stage
Highest-Priority Actions
Before pregnancy
Filter drinking water. Replace worn non-stick cookware. Reduce PFAS-treated product use. Body burden at conception affects fetal exposure.
During pregnancy
Filter drinking water for all cooking and drinking. Avoid fast food packaging and microwaved food in packaging. Discuss PFAS exposure with your OB or midwife, especially if you live near a contamination site.
Infants (0–12 months)
Use filtered water for formula preparation. Continue breastfeeding unless physician advises otherwise — discuss with your provider if you have known high exposure. Reduce household dust with frequent HEPA vacuuming.
Toddlers (1–4 years)
Filter drinking water. Wash hands frequently, especially before eating. Vacuum floors regularly. Avoid fast food. Replace heavily worn non-stick cookware.
School-age children
Filter home drinking water. Monitor lunch and snack food packaging. Choose PFAS-free outdoor gear and rain jackets where available.
Adolescents
Filter home drinking water. Limit fast food. Check personal care products for PFAS — some makeup and cosmetics contain them. Relevant especially for girls given PFAS associations with puberty timing.
ForeverChemicals.info provides educational information for general consumers. Nothing on this site constitutes medical advice. Consult your physician or pediatrician for guidance specific to your child’s health situation. Data sourced from EPA, ATSDR, American Academy of Pediatrics, EWG, and peer-reviewed research. Last updated February 2026.