[Havoc]

You're likely thinking of microplastics not nanoplastics. RO is actually suspected of ADDING nanoplastics

>In what the researchers called an ironic finding, they also found plastic compounds in the water that matched the primary material in reverse-osmosis filters — suggesting that the plastics had leached into the water by the very process of filtration

https://thehill.com/policy/equilibrium-sustainability/439572...

[killingtime74]

Thanks for the link. That's interesting to me. I was not confused about nano vs micro plastic. In my research before installing, I see the membrane size is about 1/10th that of nanoplastic size, hence thought it would remove them. For microplastic most non-RO filters can already remove them.

[zo1]

So what does that leave us with to filter water absolutely safely? Distillation? Are there any commercial or consumer systems that can do that in an easy and convenient package?

[killingtime74]

The only alternative to RO/Distillation in purity I can think of is collecting rainwater. Im still going to use RO. For the volumes of water I use and without a rainwater collection system that doesn't use plastic pipes it's the best I can do.

While it may introduce nanoplastic it also removes it from the source water so depending on the numbers it may still be better

[Havoc]

>So what does that leave us with to filter water absolutely safely? Distillation?

No idea. Wouldn't be surprised if even distillation doesn't do the trick...i.e. carries the particles with it

I think best plan is just to minimize plastic use as much as possible.