Pitcher filter · checked 16 Oct 2026
Waterdrop Elfin Pitcher Water Filter for Home PT-05 with 1 Filter
Model WD-PT-05 · replacement filter WD-PF-01A Plus
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 | “The filter is NSF 42 certified to reduce chlorine, taste and odor” brand source | NSF/ANSI 42 | IAPMOfile W-14269 | Certified — IAPMO listing, checked 16 Oct 2026 | IAPMO listingchecked 16 Oct 2026 |
| Taste and odor | Same statement as for Chlorine. brand source | NSF/ANSI 42 | IAPMOfile W-14269 | Certified — IAPMO listing, checked 16 Oct 2026 | IAPMO listingchecked 16 Oct 2026 |
| Scale | “effectively filter out harmful substances, such as chlorine, taste and odor, limescale, heavy metals, and to retain beneficial substances” brand source | – | – | Brand claim — no certification cited | brand pagechecked 16 Oct 2026 |
| Mercury | not claimed on the brand pages we read | NSF/ANSI 53 | IAPMOfile W-14270 | Certified — IAPMO listing, checked 16 Oct 2026 | IAPMO listingchecked 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 |
|---|---|---|---|
| Waterdrop pitcher filter (WD-PF-01A Plus) | 3 months or 200 gallons“Replacement filter model WD-PF-01A Plus Filter capacity 200 gallons (757 liters) / 3 months” | 4 | brand sourcechecked 16 Oct 2026 |
Certification listings found
IAPMO · NSF/ANSI 42 · file W-14269
Qingdao Ecopure Filter Co. Ltd lists WDP-PT-05BL-L, WDP-PT-05W-L, WDP-PT-05B-L and 3 more
Chlorine · Taste and Odor
Open the listing · checked 16 Oct 2026
IAPMO · NSF/ANSI 53 · file W-14270
Qingdao Ecopure Filter Co. Ltd lists WDP-PT-05BL-L, WDP-PT-05W-L, WDP-PT-05B-L and 3 more
Mercury
Open the listing · checked 16 Oct 2026
IAPMO · NSF/ANSI/CAN 372 · file W-13936
Qingdao Ecopure Filter Co. Ltd lists WDP-PT-05BL-L 1, 2, 3, WDP-PT-05W-L 1, 2, 3, WDP-PT-05B-L 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-PT-05
- NSF listing search: Waterdrop
- WQA listing search: WD-PT-05
- WQA listing search: Waterdrop
- IAPMO R&T listing directory
What the brand says about certification
- “NSF 42 & 372 Certified. (For detailed information, please refer to the performance data sheet in the instruction manual.)” source checked 16 Oct 2026
- “System is tested and certified by NSF International against NSF/ANSI Standard 42 for the reduction of chlorine, bad taste and odor, and against NSF/ANSI 372.” source checked 16 Oct 2026
- “The filter is NSF 372 certified for lead-free material” source checked 16 Oct 2026