The class action lawsuit did independent testing and is completely unrelated to NYT…

Valid point. Most people aren't conscientious about filter replacement, as I'm learning. I've looked at the water quality report for my town. The reason I'm looking for a solution is in part because of the lead in that report and because my state is known for having lead-heavy water in a town not too far away, that rhymes with glint.

Not sure how to go about that, and guessing the cost-benefit ratio may not make it worthwhile. I appreciate the option though, should I ever find myself traveling!

Yes, this would qualify. I don't see US resellers though for replacement filters.

Yeah, they claim independent testing, but also a filter that lasts 2600 gallons. Unlikely.

They actually look pretty impressive. Any idea if their cartridge can fit other similar-looking filter housings like the first 3 links in my main post? I'd love to use a transparent housing.

Thanks for sharing this. It makes a lot of sense to use certified filters instead. Excellent solution. Doulton filters appear to be NSF 42 and 53 certified, too!

Is RO typically exempt from NSF/ANSI performance standards and testing like distillation because they remove everything, or do they still need to be rated? My understanding was that NSF58 was the standard RO need to meet to qualify as legitimately RO when independently tested.

Which do you use (link welcomed)? Did you bother with NSF ratings or is that less of a concern compared to TDS?

Guessing you didn't read the main post, but thanks. 😅 I’d be interested if you’ve had your filters efficacy tested after a few hundred gallons, given that the independent testing I cited showed massively reduced efficacy after 200-300 gallons.