# Aquasana Claryum 3-Stage Max Flow Under-Sink Filter

> WQA-certified under-sink filter certified to NSF/ANSI 42, 53, 401, and P473. Removes 99.7% PFOA/PFOS and 78+ contaminants including chloramines, lead, and emerging contaminants. DIY install. ~$156-184/yr.

- Brand: [Aquasana](https://nontoxicnook.com/brands/aquasana)
- Category: Kitchen › Small Appliances › [Water Filters](https://nontoxicnook.com/products/category/kitchen-water-filters)
- Price tier: $$
- Canonical: https://nontoxicnook.com/products/aquasana-claryum-3-stage-max-flow

## Why we chose it

The Claryum 3-Stage Max Flow holds the strongest non-RO certification stack for an under-sink system: NSF/ANSI 42 (taste/odor), 53 (health contaminants), 401 (emerging contaminants), and P473 (PFAS). WQA Gold Seal covers the full system, not just components. At $156-184/yr it costs more than budget options, but the P473 certification for PFOA/PFOS at 99.7% removal is independently verified, not a marketing claim. Removes chloramines, unlike most non-RO systems.

## Certifications

- NSF/ANSI 42
- NSF/ANSI 53
- NSF/ANSI 401
- NSF/ANSI P473

## Specs

- filter-type: Under-sink, 3-stage non-RO
- certifications: NSF/ANSI 42, 53, 401, P473 (WQA Gold Seal)
- pfas-removal: 99.7% PFOA/PFOS (NSF/ANSI P473 certified)
- chloramine-removal: Yes
- contaminants-reduced: 78+
- annual-filter-cost: $156-184/yr
- installation: DIY under-sink
- source:nsf-ansi-53: https://info.nsf.org/Certified/DWTU/Listings.asp?TradeName=Aquasana
- image:source-url: https://www.amazon.com/dp/B0FN9Y9JSP
- image:credit: Aquasana, via Amazon product listing

## Where to buy

- [Amazon](https://www.amazon.com/dp/B0FN9Y9JSP)

Prices are deliberately omitted from this mirror — they go stale. Current prices and stock: https://nontoxicnook.com/products/aquasana-claryum-3-stage-max-flow

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