rainwater

^[1]^[2]

Introduction

perfluoroalkyl & polyfluoroalkyl substances (PFAS)

no natural breakdown, thus forever
in drinking water & manufactured products
drinking rainwater is unsafe^[2]
- levels of PFAS in rainwater often exceed US Environmental Protection Agency Lifetime Drinking Water Health Advisory levels^[2]

↑ Dennis B, Fears D Biden administration moves to curtail toxic 'forever chemicals'. Washington Post. October 18, 2021 https://www.washingtonpost.com/climate-environment/2021/10/18/epa-regulate-forever-chemicals-pfas/
↑ ^2.0 ^2.1 ^2.2 Crist C Rainwater Unsafe to Drink Amid 'Forever Chemicals': Study. Medscape. August 16, 2022 https://www.medscape.com/viewarticle/979263
Cousins IT et al Outside the Safe Operating Space of a New Planetary Boundary for Per- and Polyfluoroalkyl Substances (PFAS). Environ. Sci. Technol. 2022, 56, 16, 11172-79 PMID: https://www.ncbi.nlm.nih.gov/pubmed/35916421 https://pubs.acs.org/doi/10.1021/acs.est.2c02765