Under-sink filter · checked 16 Oct 2026
Aquasana Claryum 3-Stage Under Sink Water Filter
Model AQ-6300 · replacement filter AQ-C3-R
Lead:Brand says certifiedPFAS:Brand says certified
Each claim, checked
What the brand says, what a certification listing shows for this model, and where each fact comes from. We read listings; we do not test products.
- Certified (listing checked)The certifier’s public listing shows this claim for this model.
- Brand says certifiedThe brand says certified; IAPMO’s listing does not show it. NSF can be checked by hand.
- Brand claim onlyThe brand claims it without citing a certification.
| Contaminant | Brand claim | Standard | Certifier | Confirmed? | Source, date checked |
|---|---|---|---|---|---|
| Lead | “tested and certified to NSF/ANSI Standards 42, 53 (includes P473), and 401, for the reduction of 99.995% of Cysts, 99.6% of microplastics and lead” brand source | NSF/ANSI 42, 53 (includes P473), 401 | NSF, WQA (named by brand) | Brand says certified — not found in IAPMO’s listing; check NSF | IAPMO searched · check NSF’s listingchecked 16 Oct 2026 |
| PFOA | “99.7% of PFAS Forever Chemicals (specifically PFOA/PFOS), 97.3% of chlorine, and 91% of chloramines” brand source | NSF/ANSI 42, 53 (includes P473), 401 | NSF, WQA (named by brand) | Brand says certified — not found in IAPMO’s listing; check NSF | IAPMO searched · check NSF’s listingchecked 16 Oct 2026 |
| PFOS | Same statement as for PFOA. brand source | NSF/ANSI 42, 53 (includes P473), 401 | NSF, WQA (named by brand) | Brand says certified — not found in IAPMO’s listing; check NSF | IAPMO searched · check NSF’s listingchecked 16 Oct 2026 |
| PFAS (no compounds named) | “Get clean, healthy water by reducing 78 contaminants including chlorine, lead, PFAS, microplastics, pesticides, and more.” brand source | – | – | Brand claim — no certification cited | brand pagechecked 16 Oct 2026 |
| Cysts (Giardia, Cryptosporidium) | Same statement as for Lead. brand source | NSF/ANSI 42, 53 (includes P473), 401 | NSF, WQA (named by brand) | Brand says certified — not found in IAPMO’s listing; check NSF | IAPMO searched · check NSF’s listingchecked 16 Oct 2026 |
| Microplastics | Same statement as for Lead. brand source | NSF/ANSI 42, 53 (includes P473), 401 | NSF, WQA (named by brand) | Brand says certified — not found in IAPMO’s listing; check NSF | IAPMO searched · check NSF’s listingchecked 16 Oct 2026 |
| Chlorine | Same statement as for PFOA. brand source | NSF/ANSI 42, 53 (includes P473), 401 | NSF, WQA (named by brand) | Brand says certified — not found in IAPMO’s listing; check NSF | IAPMO searched · check NSF’s listingchecked 16 Oct 2026 |
| Chloramine | Same statement as for PFOA. brand source | NSF/ANSI 42, 53 (includes P473), 401 | NSF, WQA (named by brand) | Brand says certified — not found in IAPMO’s listing; check NSF | IAPMO searched · check NSF’s listingchecked 16 Oct 2026 |
| Mercury | “The Claryum® 3-Stage is also certified to reduce mercury, herbicides, pesticides, pharmaceuticals, and more.” brand source | – | NSF, WQA (named by brand) | Brand says certified — not found in IAPMO’s listing; check NSF | IAPMO searched · check NSF’s listingchecked 16 Oct 2026 |
| Pesticides and herbicides | Same statement as for Mercury. brand source | – | NSF, WQA (named by brand) | Brand says certified — not found in IAPMO’s listing; check NSF | IAPMO searched · check NSF’s listingchecked 16 Oct 2026 |
| Pharmaceuticals | Same statement as for Mercury. brand source | – | NSF, WQA (named by brand) | Brand says certified — not found in IAPMO’s listing; check NSF | IAPMO searched · check NSF’s listingchecked 16 Oct 2026 |
| VOCs (volatile organic chemicals) | “This filter removes up to: 99.99% Cysts 99.6% Microplastics, PFAS (PFOA & PFOS), & Lead 99% VOCs and Asbestos” brand source | – | – | Brand claim — no certification cited | brand pagechecked 16 Oct 2026 |
| Asbestos | Same statement as for VOCs (volatile organic chemicals). brand source | – | – | Brand claim — no certification cited | brand pagechecked 16 Oct 2026 |
Filter changes, by the brand’s numbers
How often Aquasana says to replace each part. Real filter life depends on how much water you use and what is in it.
| Part | Brand says replace every | Changes a year | Source, date checked |
|---|---|---|---|
| Claryum 3-Stage replacement filter set (AQ-C3-R: pre-filter + two Claryum filters) | 6 months or 600 gallons“Claryum® 3-Stage Filter Replacement Replace every 6 months. Filters 600 gallons of water or up to 6 months for clean, great-tasting water.” | 2 | brand sourcechecked 16 Oct 2026 |
Certification listings found
No IAPMO R&T listing matched this model when we searched on 16 Oct 2026.
Check it yourself
NSF’s and WQA’s terms don’t allow automated lookups, so these links open their public listings for this model:
- NSF listing search: AQ-6300
- NSF listing search: AQ-C3-R
- NSF listing search: AQ-6300-BN
- WQA listing search: AQ-6300
- WQA listing search: AQ-C3-R
- WQA listing search: AQ-6300-BN
- IAPMO R&T listing directory
What the brand says about certification
- “WQA tested and certified to NSF/ANSI Standards 42, 53 (includes P473), and 401.” source checked 16 Oct 2026
- “WQA tested and certified to NSF/ANSI Standards 42, 53, and 401 for the claims specified on the Performance Data Sheet” source checked 16 Oct 2026
- “The Claryum® 3-Stage meets the new, stricter NSF Standard 53 requirement for PFAS reduction, with PFOA/PFOS results tested down to 20 parts per trillion (PPT).” source checked 16 Oct 2026
- “System tested and certified by WQA to NSF/ANSI Standard 42, 53, and 401 for the reduction of the claims specified on the Performance Data Sheet and at www.WQA.org.” source checked 16 Oct 2026
Performance data sheet (names WQA)