PFAS in backyard chicken eggs: the map
Peer-reviewed publication
Citizen-science data reveal drivers of PFAS variability in backyard chicken eggs
13/10/2026: Our citizen science study, based on 801 laboratory measurements from across the Netherlands, has been published in Peer Community Journal after peer review. See the summary, key figures and FAQ. Read more →
On this map you can find all PFAS test results for backyard chicken eggs in the Netherlands that have been reported here (07/11/2026: 924 reports of which 62% above the EU limits). A test result is only a snapshot, PFAS levels can vary substantially at the same location.
For privacy reasons, locations have been shifted by up to 4 km in a random direction; some points therefore lie in the water. When zoomed in, each report is shown as a circle with a radius of 4 km.
Maximum limit
The European Union sets the maximum PFAS limits for eggs, in micrograms per kilogram, in a regulation:
- PFOS: 1.0 µg/kg
- PFOA: 0.3 µg/kg
- PFNA: 0.7 µg/kg
- PFHxS: 0.3 µg/kg
- Or the sum of all four: 1.7 µg/kg
Please note, if an individual PFAS value exceeds its limit, but the sum does not, the eggs are still considered above the limit. That is also how the NVWA applies the limits.
Calculator
The European Food Safety Authority (EFSA) has set the tolerable weekly intake (TWI) for PFAS at 4.4 nanograms per kilogram (ng/kg) body weight.
Use the calculator to estimate how much your lab result contributes to the limit, using the EFSA calculator method or the RIVM calculator method. Please note that a test result is only a snapshot, and that RIVM advises against eating eggs from backyard chickens.
Testing
Private individuals can have backyard chicken eggs tested at the laboratories of Normec, Antea Group, Triskelion, and Cotecna, at prices ranging from € 125 to € 585. Read more here about the different providers.
This is an initiative by Dreas, a backyard chicken keeper with 5 hens, to create more transparency around PFAS in chicken eggs.
For contact, send an email.