Are off-brand fridge filters as good as the originals?

A copy is a filter another company makes to fit your refrigerator, sold under its own brand. Waterdrop, Mist, Glacier Fresh, ICEPURE, Instapure, Swift Green and Filters Fast are the makers TapBuff tracks. Whether a copy fits is its maker's claim. What it removes is whatever its certifier's listing says, and a listing covers that model number only, not the original it copies. TapBuff has not tested these filters: everything here comes from certifier listings and the makers' own pages.

What the listings show

Originals. Of the 44 original filters TapBuff tracks, 33 have a listing from NSF, IAPMO or WQA, and 31 carry a lead claim under NSF/ANSI 53. 7 of those also carry a PFOA and PFOS claim. GE's Auto Fill Pitcher filter and LG's LT500P are listed under NSF/ANSI 42 only.

Copies. TapBuff includes a copy only if a certifier lists it for at least one reduction claim, and 58 do. 41 of them are certified only to reduce chlorine, taste and odor, under NSF/ANSI 42. 17 carry a lead claim.

NSF/ANSI 42 is the taste standard. A filter certified to it has passed its certifier's checks for what it claims, but chlorine taste and odor is not a health claim. Lead, cysts and PFOA and PFOS are claims under NSF/ANSI 53, and the guide to the standards explains the rest.

The copies that claim taste and odor only

Most of the cheapest copies are in this group. Five years of GE's MWF, replaced on GE's six-month interval at its list price, costs $500. Mist's copy of it, the CWMF031, costs $160, and its listing covers chlorine, taste and odor. GE's listings add lead, PFOA and PFOS, mercury, asbestos and cysts under NSF/ANSI 53.

If better-tasting water is what you want, a taste-and-odor copy does what its listing says. It just isn't certified to remove lead or anything else that affects health.

GE MWF SmartWater Refrigerator Water Filter (MWFP) and its certified copies

Filter	Health claims on its listings	Five years
GE MWF SmartWater Refrigerator Water Filter (MWFP)The original	Lead, PFOA, PFOS, Total trihalomethanes (TTHM)	$500
Swift Green SGF-G9Copy	Lead, Copper, Arsenic, Chromium (total), Total trihalomethanes (TTHM)	$293
Instapure REF-IPG-1Copy	Lead, Total trihalomethanes (TTHM)	$420
Mist CWMF031Copy	NoneListing covers chlorine	$160
Glacier Fresh GF-MWFCopy, sold in 3-packs	NoneListing covers chlorine	$168
Filters Fast PH21100Copy	NoneListing covers chlorine	$300
ICEPURE RWF0600ACopy, sold in 3-packs	NoneListing covers chlorine	No interval
Health claims are the contaminants TapBuff has pages for, beyond chlorine, taste and odor, that a certifier’s listing covers; each filter’s page lists every claim. Five years of filters, replaced on each maker’s interval at its list price. “No interval” means the maker publishes no replacement interval. Listings checked Oct. 9, 2026.

Copies with lead claims

Instapure's ten copies, Swift Green's five and two of Waterdrop's carry a lead claim under NSF/ANSI 53. Each costs less over five years than the original it copies, at the makers' list prices.

Some cover things their originals don't. Swift Green's listing for its SGF-M9, a copy of EveryDrop Filter 4, includes arsenic, chromium and copper claims under NSF/ANSI 53, which EveryDrop's own listing doesn't carry. EveryDrop's names more pesticides and solvents one by one. Each has claims the other lacks, so compare the two pages for the contaminants you care about.

One claim none of these copies carries is the Class I particulate claim under NSF/ANSI 42, which EPA's lead-filter guide pairs with the lead claim. Every original with a lead claim carries it. Does your refrigerator filter remove lead? explains why that pairing matters.

Instapure's copies also carry PFOA and PFOS claims, on an IAPMO certificate under NSF P473. NSF has retired that protocol and moved its claims into NSF/ANSI 53, so TapBuff doesn't count them.

EveryDrop Refrigerator Ice & Water Filter 4 (EDR4RXD1) and its certified copies

Filter	Health claims on its listings	Five years
EveryDrop Refrigerator Ice & Water Filter 4 (EDR4RXD1)The original	Lead	$600
Swift Green SGF-M9Copy	Lead, Copper, Arsenic, Chromium (total), Total trihalomethanes (TTHM)	$293
Instapure REF-IPM-2Copy	Lead, Total trihalomethanes (TTHM)	$420
Waterdrop WDP-F07 (WDP-UKF8001)Copy	Lead	$240
Glacier Fresh GF-8001Copy, sold in 3-packs	NoneListing covers chlorine	$160
Mist CWMF004Copy	NoneListing covers chlorine	$200
Filters Fast PH21500Copy	NoneListing covers chlorine	$300
ICEPURE RWF0900ACopy, sold in 3-packs	NoneListing covers chlorine	No interval
Health claims are the contaminants TapBuff has pages for, beyond chlorine, taste and odor, that a certifier’s listing covers; each filter’s page lists every claim. Five years of filters, replaced on each maker’s interval at its list price. “No interval” means the maker publishes no replacement interval. Listings checked Oct. 9, 2026.

When the copy is listed and the original isn't

LG says its LT1000P is certified to NSF/ANSI 42, 53 and 401, and its LT700P to 42 and 53. Samsung says its water filters meet 42, 53 and 401. On October 9, 2026, TapBuff found no NSF, IAPMO or WQA listing for LG's LT1000P or LT700P, or for Samsung's HAFCU1, under any of their part numbers.

Instapure's copies of all three, and Swift Green's copy of the HAFCU1, carry lead claims on IAPMO's listings. That doesn't show LG's and Samsung's filters do less. It means no certifier lists what they do, so their claims can't be checked.

LG LT1000P Refrigerator Water Filter and its certified copies

Filter	Health claims on its listings	Five years
LG LT1000P Refrigerator Water FilterThe original	No listing found	$550
Instapure REF-IPL-5Copy	Lead, Total trihalomethanes (TTHM)	$440
Waterdrop WD-LT1000PCopy, sold in 3-packs	NoneListing covers chlorine	$132
Glacier Fresh GF-1000PCopy, sold in 3-packs	NoneListing covers chlorine	$168
ICEPURE RWF4700ACCopy, sold in 4-packs	NoneListing covers chlorine	No interval
Health claims are the contaminants TapBuff has pages for, beyond chlorine, taste and odor, that a certifier’s listing covers; each filter’s page lists every claim. Five years of filters, replaced on each maker’s interval at its list price. “No interval” means the maker publishes no replacement interval. Listings checked Oct. 9, 2026.

Same brand, different filter

One copy maker can sell filters with very different listings. Waterdrop's WD-F38, its copy of EveryDrop Filter 1, is listed under NSF/ANSI 42 only. Its WDP-F07, a "Plus" copy of Filter 4, carries a lead claim under NSF/ANSI 53. On a store page the names can differ by one word, so check the model number against the listing, not the title.

Fit claims need the same care. Glacier Fresh lists ADQ72910901 among the parts its GF-800P replaces, but LG gives that number to its LT500P, a different filter from the LT800P the GF-800P copies. Match the number on the filter in your fridge, and check the shape.

Counterfeits are a different problem

A certified copy is sold under its own name. A counterfeit carries an original's brand and packaging. AHAM, the trade group for appliance makers, had counterfeit refrigerator filters tested: it reports that only 2 of 18 removed lead for the filter's full six months, and that 7 of 8 failed to remove 90 percent of cysts.

AHAM advises buying filters sold by the refrigerator's maker. TapBuff links an original on Amazon only when Amazon itself or the maker is the seller, and a copy only when its own brand is.

How to check any filter

1. Find the model number on the filter itself, not the refrigerator's. A copy's number is its own: Mist's copy of GE's MWF is the CWMF031.
2. Look it up on the certifier's listing: NSF's listings search, IAPMO's or WQA's. Or search TapBuff, whose filter pages link each listing.
3. Read the claims. Lead, cysts and PFOA and PFOS are under NSF/ANSI 53. Chlorine taste and odor is under NSF/ANSI 42. A standard number printed on a box isn't a listing.

Every refrigerator filter TapBuff tracks is ranked by its health claims, then by five years of filters, and you can find yours there by your fridge's model number.

To see what EPA's records show for your water: