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Comment by kldavis4 | Hacker News Reader

Apparently there are now technologies available to remove PFAS from water: https://cen.acs.org/environment/persistent-pollutants/Foreve... but it is going to be expensive to deploy everywhere that it is needed.

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From the article it seems reverse osmosis is up to the task, but the problem is the waste water generated now has concentrated PFAS.

I think britAs and the like work somewhat at removing pfas. They’re large organic molecules and they excel at removing those.

Based on internet it seems zerowater filters are much more effective than brita, but they cost a bit more to run (because, well, they filter out more stuff).

Hmm I got to the conclusion that zero water was way better at filtering out smaller chemicals like lead. I’m still think both types of filters are good for pfas. Zero water could be a little better though.

I could still be wrong. It was hard to find any good studies or tests last time I looked into it.

do you have a source for this? i can't seem to find much on pfoa removal/reduction and brita filters

I believe the brita type filters are considered activated carbon? If so here’s a source:

https://www.epa.gov/sciencematters/reducing-pfas-drinking-wa...

"Both granular activated carbon (GAC) and reverse osmosis (RO) filters can reduce PFAS substances. Both systems provide less water flow than a standard water faucet."

https://www.michigan.gov/pfasresponse/0,9038,7-365-86510_871...

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