美国自来水还是过滤后喝好，

https://www.cnn.com/2023/07/05/health/pfas-nearly-half-us-tap-water-wellness/index.html#:~:text=for%20reclassifying%20marijuana.-,Nearly%20half%20of%20the%20tap%20water%20in%20the%20US%20is,forever%20chemicals%2C'%20government%20study%20finds&text=Almost%20half%20of%20the%20tap,from%20the%20US%20Geological%20Survey.

 

 

https://www.theguardian.com/us-news/2021/mar/31/americas-tap-water-samples-forever-chemicals