PFAS, or “forever chemicals,” are synthetic substances that persist in the environment and accumulate in soil, water, plants, and animals. In 2025, the Dutch RIVM advised against eating eggs from home-kept chickens due to elevated PFAS levels found during a nationwide sampling study.
But the risk is not always the same. This post outlines four ways you can assess and reduce PFAS exposure, helping you make more informed choices about your backyard eggs.
1. Understand the RIVM’s Findings
According to the 2025 RIVM report[1], 31 out of 60 tested flocks had PFAS levels high enough that one egg per week could exceed the EFSA’s safety threshold. However, 9 flocks fell within safe limits when eggs were eaten infrequently. This shows that risk is variable, not universal.
2. Reduce Exposure Through Chicken Management
Earthworms are a major PFAS source for chickens. Chickens that forage directly on untreated soil—especially in areas near fire training zones, landfills, or industrial sites—are at higher risk. Keeping birds off bare earth by using raised runs, sand, or clean bedding can reduce their intake of contaminated material and may lower PFAS levels in eggs[3].
3. Test Your Eggs (If Needed)
Egg testing services in the Netherlands include:
- Testenoppfas.nl – sample-based testing (~€270)
- Normec Groen Agro Control
These services are intended for hobbyists, not commercial scale, and are cost-effective only for high-value breeding programs or peace of mind. They test for a limited group of PFAS compounds, so results should be interpreted accordingly.
4. Moderate Consumption and Use Risk-Informed Judgment
If you don’t live near known contamination sites and keep chickens on clean bedding, eating your own eggs occasionally—such as 1–2 eggs per week—may pose low risk. This is especially true if the rest of your diet contains minimal PFAS exposure (e.g., limited oily fish, offal, or imported produce).
Summary
- RIVM advises caution, but actual risk varies by location and chicken management.
- Raised, worm-free runs may reduce contamination.
- Testing can confirm safety, though it’s expensive.
- Occasional consumption may be reasonable in low-risk areas with good practices.