Whole-house filter · checked 16 Oct 2026
Waterdrop WHF21-PG 5 Micron 2-Stage Whole House Water Filtration…
Model WD-WHF21-PG · replacement filter WD-WF10PG
Lead:not claimedPFAS:not claimed
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 |
|---|---|---|---|---|---|
| Chlorine | “NSF/ANSI 372 Certified | Reduces 95.6% chlorine, and it's lead-free.” brand source | NSF/ANSI 372 | – | Brand says certified — not found in IAPMO’s listing; check NSF | IAPMO searched · check NSF’s listingchecked 16 Oct 2026 |
| Taste and odor | “5-Stage Filtration - Reduces 95.6% of chlorine and odors.” brand source | – | – | Brand claim — no certification cited | brand pagechecked 16 Oct 2026 |
| Particulates | “Effectively reduces chlorine*, odor*, sediment*, dirt*, sand* and other large particles*.* Tested by a third-party laboratory.” brand source | – | – | Brand claim — no certification cited | brand pagechecked 16 Oct 2026 |
| Manganese | “reduce over 98.9% of manganese, 95.6% of chlorine, and contaminants including iron, rust, sediment, and odors ... * Tested by a third-party laboratory.” brand source | – | – | Brand claim — no certification cited | brand pagechecked 16 Oct 2026 |
| Iron | Same statement as for Manganese. brand source | – | – | Brand claim — no certification cited | brand pagechecked 16 Oct 2026 |
Filter changes, by the brand’s numbers
How often Waterdrop 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 |
|---|---|---|---|
| WD-WF10PG replacement filters (iron & manganese reducing filter and GAC filter)The brand gives more than one figure for this part. | 6 months“The iron & manganese reducing filter and GAC filter have a six-month lifespan.”3–6 months“Filter Lifespan WD-WF10FG 3-6 months WD-WF10PG 3-6 months” | 2 or 2–4 | brand sourcechecked 16 Oct 2026brand sourcechecked 16 Oct 2026 |
Certification listings found
IAPMO · NSF/ANSI/CAN 372 · file W-13936
Qingdao Ecopure Filter Co. Ltd lists WD-WHF21-PG, WD-WHF21-FG, WD-WHF21-BG and 3 more
Materials only (no reduction claim)
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: WD-WHF21-PG
- NSF listing search: Waterdrop
- WQA listing search: WD-WHF21-PG
- WQA listing search: Waterdrop
- IAPMO R&T listing directory
What the brand says about certification
- “NSF/ANSI 372 Certified - Ensures lead-free, safe water with certified materials.” source checked 16 Oct 2026
- “Whole house water filter system is certified by NSF/ANSI 372 for lead-free materials, ensuring water safety.” source checked 16 Oct 2026
- “It has also been tested by a third-party laboratory, effectively reducing iron, manganese” source checked 16 Oct 2026