What in your home is worth worrying about?
The home exposure record: 139 things in a house scored 0–100 for avoidable exposure, sourced row by row — so you fix what matters first and skip what doesn't.
Two questions people bring here: what in my house carries PFAS? · I found vermiculite in the attic — what now?
19of 189 scored exposures involve PFAS
Free Home CheckTwelve questions. Room by room. What to do first.Start the check →
Two front doors pick yours
The Index 189 entries · by room
Where it comes in
Biggest avoidable exposures in a home
How we score one transparent formula
Every entry, the same way
- 100StartEvery entry begins at 100.
- −4.6×HChemical hazardToxicity of the associated chemicals.
- −3.4×EEveryday exposureHow much the average person meets it.
- −2.6×PPersistenceHow long it lingers in body and environment.
- = ScoreThe bandMinimal, Low, Moderate, High or Severe.
Method, sources, version history and open data (CC BY 4.0) →
You can't see what's in your home.
Now you can score it.
Check your home →
The whole Exposure Index on your phone. Point it at a pan, a candle, a shampoo.
