Faucet-mount filter · checked 16 Oct 2026
PUR Faucet Filtration System, Vertical
Model FM-3333B · replacement filter RF-3375
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 | “the PUR Faucet Filtration System includes a PUR Filter, certified to reduce lead and 10x more contaminants than the leading Brita pitcher filter.” brand source | NSF/ANSI 53 | IAPMOfile W-29904 | Certified — IAPMO listing, checked 16 Oct 2026 | IAPMO listingchecked 16 Oct 2026 |
| PFAS (named list) | “Total PFAS 99.92%” brand source | NSF/ANSI 53 | IAPMOfile W-29904 | Certified — IAPMO listing, checked 16 Oct 2026 | IAPMO listingchecked 16 Oct 2026 |
| Microplastics | “Certified to reduce Lead, Microplastics, Chlorine, Mercury & More¹” brand source | NSF/ANSI 401 | IAPMOfile W-29905 | Certified — IAPMO listing, checked 16 Oct 2026 | IAPMO listingchecked 16 Oct 2026 |
| Chlorine | Same statement as for Microplastics. brand source | NSF/ANSI 42 | IAPMOfile W-29903 | Certified — IAPMO listing, checked 16 Oct 2026 | IAPMO listingchecked 16 Oct 2026 |
| Mercury | Same statement as for Microplastics. brand source | NSF/ANSI 53 | IAPMOfile W-29904 | Certified — IAPMO listing, checked 16 Oct 2026 | IAPMO listingchecked 16 Oct 2026 |
| VOCs (volatile organic chemicals) | “VOC (chloroform surrogate) 99.51%” brand source | NSF/ANSI 53 | IAPMOfile W-29904 | Certified — IAPMO listing, checked 16 Oct 2026 | IAPMO listingchecked 16 Oct 2026 |
| BPA, nonylphenol and similar | not claimed on the brand pages we read | NSF/ANSI 401 | IAPMOfile W-29905 | Certified — IAPMO listing, checked 16 Oct 2026 | IAPMO listingchecked 16 Oct 2026 |
| Particulates | not claimed on the brand pages we read | NSF/ANSI 42 | IAPMOfile W-29903 | Certified — IAPMO listing, checked 16 Oct 2026 | IAPMO listingchecked 16 Oct 2026 |
| Pesticides and herbicides | not claimed on the brand pages we read | NSF/ANSI 401 | IAPMOfile W-29905 | Certified — IAPMO listing, checked 16 Oct 2026 | IAPMO listingchecked 16 Oct 2026 |
| Pharmaceuticals | not claimed on the brand pages we read | NSF/ANSI 401 | IAPMOfile W-29905 | Certified — IAPMO listing, checked 16 Oct 2026 | IAPMO listingchecked 16 Oct 2026 |
| Taste and odor | not claimed on the brand pages we read | NSF/ANSI 42 | IAPMOfile W-29903 | Certified — IAPMO listing, checked 16 Oct 2026 | IAPMO listingchecked 16 Oct 2026 |
Filter changes, by the brand’s numbers
How often PUR 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 |
|---|---|---|---|
| PUR faucet filter (RF-3375) | 3 months or 100 gallons“Replace your filter every three months or 100 gallons to ensure contaminant reduction is at the certified levels.” | 4 | brand sourcechecked 16 Oct 2026 |
Certification listings found
IAPMO · NSF/ANSI 401 · file W-29905
Kaz USA, Inc. lists PFM150W, PFM200B, PFM310M and 21 more
Meprobamate · Atenolol · Carbamazepine · DEET · Metolachlor · Trimethoprim · Linuron · TCPP · Phenytoin · Ibuprofen · Naproxen · Estrone · Bisphenol A · Nonylphenol · Microplastics
Open the listing · checked 16 Oct 2026
IAPMO · NSF/ANSI 42 · file W-29903
Kaz USA, Inc. lists PFM150W, PFM200B, PFM310M and 21 more
Chlorine · Taste & Odor · Particulate Class I
Open the listing · checked 16 Oct 2026
IAPMO · NSF/ANSI 53 · file W-29904
Kaz USA, Inc. lists PFM150W, PFM200B, PFM310M and 21 more
Lead · Mercury · Total PFAS · VOC
Open the listing · checked 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: FM-3333B
- NSF listing search: RF-3375
- WQA listing search: FM-3333B
- WQA listing search: RF-3375
- IAPMO R&T listing directory
What the brand says about certification
- “Genuine PUR Faucet filters are certified by IAPMO R&T to reduce lead and other contaminants from your water.¹” source checked 16 Oct 2026
- “PUR faucet systems are certified by NSF to reduce 70 contaminants and substances, including sediment, chlorine (taste and odor) and its by-products.¹” source checked 16 Oct 2026
- “Certified by IAPMO R&T to NSF/ANSI 42, 53, 401 for the reduction of the claims specified in the performance data sheet.” source checked 16 Oct 2026
Performance data sheet (names IAPMO R&T)