Fridge filter finder · checked October 22, 2026
everydrop Filter 1 (EDR1RXD1) for Whirlpool and KitchenAid Fridges: Which Cheaper Copies Are Certified for Lead
Buy the MARRIOTTO Z001. IAPMO R&T lists it for lead, mercury and cysts (NSF/ANSI 53), for 200 gallons like Whirlpool's own filter. The Waterdrop Plus WDP-F38 is certified for lead too. Most other cheap copies, including the best-selling HMASAV, are certified for taste and odor only or not at all. At today's Amazon prices it costs about $18.12 a year, vs $108.00 for the Whirlpool filter.
IAPMO R&T lists this exact model code, Z001, for lead, mercury and cysts (NSF/ANSI 53). Pack: 3 filters.
Check price on AmazonOr the Whirlpool filter ($54.00) →Amazon prices as of November 12, 2026 at 12:18 PM ET. Prices can change; the price on Amazon is the one that counts.
Every everydrop Filter 1 (EDR1RXD1) filter we checked, side by side
"Certified for" comes from the certifier's own listing for that exact model code, not from the box or the Amazon page. Per year = 2 filters, because Whirlpool says to change it every 6 months. Prices as of November 12, 2026 at 12:18 PM ET. Certification listings checked October 22, 2026.
| Filter | Certified for | Who certified it | Per filter | Per year | |
|---|---|---|---|---|---|
| MARRIOTTO Z001 Model Z001 · 3 filters | Lead and cysts IAPMO R&T lists Z001 for lead. Rated for 200 gallons. | IAPMO R&T 42, 53 | $9.06 | $18.12 | Amazon → |
| Waterdrop WDP-F38 Model WDP-F38 · 2 filters | Lead and cysts, traces of medicines IAPMO R&T lists WDP-F38 for lead. Rated for 200 gallons. | IAPMO R&T 42, 53, 401 | $14.99 | $29.99 | Amazon → |
| Whirlpool EDR1RXD1 (Whirlpool's own filter) Model EDR1RXD1 · 1 filter | Lead and cysts, traces of medicines | NSF 42, 53, 401 | $54.00 | $108.00 | Amazon → |
| AQUA CREST AQF-FF38 Model AQF-FF38 · 3 filters | Taste and odor only | NSF 42 | $7.20 | $14.39 | Amazon → |
| Waterdrop WD-F38 Model WD-F38 · 4 filters | Taste and odor only IAPMO R&T W-11590 lists WD-F38 for chlorine, taste and odor only. | NSF and IAPMO 42 | $8.05 | $16.09 | Amazon → |
| NUTTUTO NT001S Model NT001S · 4 filters | Taste and odor only | NSF 42 | $9.25 | $18.50 | Amazon → |
Taste-and-odor-only filters (NSF/ANSI 42) are fine if your water is safe and you only want it to taste better. They are not tested for lead or cysts. If you are not sure what is in your water, look up your water system.
Look at the model code, not the brand
Waterdrop sells two Filter 1 copies that look alike. IAPMO R&T lists the plain WD-F38 for chlorine, taste and odor only. It lists the Waterdrop Plus WDP-F38 for lead, cysts, mercury and other chemicals (NSF/ANSI 53) and traces of medicines (NSF/ANSI 401) too. Neither is listed for PFOA or PFOS.
The code is in the Amazon listing's details (model or part number) and on the filter's label. Check it before you buy.
On October 22, 2026, the best-selling Filter 1 copies on Amazon were HMASAV W001 (2-pack and 3-pack) and Stahomily ST1. We found no NSF, IAPMO or WQA listing for either. MARRIOTTO Z001 and Waterdrop Plus WDP-F38 are the copies we could confirm for lead.
About the Whirlpool filter
NSF lists Whirlpool's Filter 1 (as EDR1RXD1B and EDR1RXD1R) for NSF/ANSI 42 (chlorine, taste and odor), 53 (lead, cysts, asbestos, atrazine, benzene and other chemicals) and 401 (traces of medicines and microplastics), for 200 gallons. NSF does not list it for PFOA or PFOS. Checked on listings.nsf.org on October 22, 2026.
EDR1RXD1, W10295370A, W10295370, WHR1RXD1 and KAD1RXD1 are the same Whirlpool filter (WHR1RXD1 is the Whirlpool label, KAD1RXD1 the KitchenAid label). Match the number on your old filter.
Popular copies not certified to filter anything
- HMASAV W001 (2-pack and 3-pack): No NSF, IAPMO or WQA listing found for W001 (checked October 22, 2026). The Amazon listing says NSF 42.
- ramco EDR1RXD1 W10295370A: No NSF, IAPMO or WQA listing found for this model (checked October 13, 2026).
- Stahomily ST1: No NSF, IAPMO or WQA listing found for ST1 (checked October 22, 2026). The Amazon listing says NSF 42.
A seller's "NSF certified" or "tested to NSF standards" line is not a listing. We count a filter as certified only when the certifier lists that exact model code.
Questions people ask
Is there a cheaper everydrop Filter 1 that is certified for lead?
Yes, two. IAPMO R&T lists the MARRIOTTO Z001 for lead, mercury and cysts (NSF/ANSI 53). It lists the Waterdrop Plus WDP-F38 for lead, cysts and mercury (NSF/ANSI 53) and for traces of medicines (NSF/ANSI 401). Both are rated for 200 gallons, the same as Whirlpool's own filter. Check that the code on the listing is Z001 or WDP-F38. The plain Waterdrop WD-F38 is certified for taste and odor only.
Is EDR1RXD1 the same as W10295370A?
Yes. Whirlpool sells the same Filter 1 as EDR1RXD1, W10295370A, W10295370, WHR1RXD1 and KAD1RXD1. Any of these numbers on your old filter means you need Filter 1.
Does the everydrop Filter 1 remove PFAS?
Not as far as the listings show. NSF lists Filter 1 for lead, cysts, some pesticides and solvents, and traces of medicines, but not for PFOA or PFOS. None of the Filter 1 copies we checked is listed for PFAS either.
Are the HMASAV and Stahomily Filter 1 copies certified?
We found no NSF, IAPMO or WQA listing for HMASAV W001 or Stahomily ST1 on October 22, 2026, even though both sell well on Amazon. A seller saying "NSF certified" is not a listing.
How often should I change Filter 1?
Whirlpool says every 6 months, or after 200 gallons. That is 2 filters a year.
Sources, and what we did and did not check
- NSF certified product listings for NSF/ANSI 42, 53 and 401: listings.nsf.org, read October 22, 2026. Search "EDR1RXD1" to see every filter in this family.
- IAPMO R&T product listings: pld.iapmo.org, read October 22, 2026.
- WQA Gold Seal listings: find.wqa.org, searched October 13, 2026.
- Amazon listings and prices: read through Amazon's product API. We match each listing to the certified model code using Amazon's model and part fields. We show a price only if we read it in the last 24 hours.
- We did not: test any filter, test whether chipped copies work in a fridge, or check every copy sold. Certification covers the model code the certifier lists, for its rated gallons.
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