How the Five Compare on the Numbers
Six listings came back and one is not here. EveryDrop’s Filter 1 carries the same six bullets as its Filter 3, word for word, with one number changed: 70 potentially harmful contaminants instead of 74. It is a different cartridge for different fridges, 2.5 by 2.5 by 8.69 inches against 3.0 by 2.6 by 13.5, and it publishes no weight, so Filter 3 represents the range here.
What remains is two pairs and an outlier. The genuine Whirlpool filter sits beside a compatible cartridge for the same fridges, the genuine GE filter sits beside a compatible cartridge for its own, and Frigidaire’s own ULTRAWF stands alone. Reading each pair against itself is the most useful thing this pool allows.
What the table cannot tell you is how fast the water will come out. No listing publishes a flow rate, a pressure drop or a service life in gallons except GLACIER FRESH’s 300. Nor does any listing say which contaminants its named standards actually cover, which matters because NSF 42 concerns taste, odor and chlorine while NSF 53 and 401 are the standards that deal with health effects.
What Certified Means on Each of These Labels
Four Standards, Three Standards, and None by Number
Waterdrop names the most: NSF/ANSI 401, 53, 42 and 372, and states the certification was tested from each component through to the cartridge as a whole. EveryDrop names three, 42, 53 and 401, and makes the comparison explicit, noting that many generic brands stop at just one. Both sentences are checkable against a database, which is the point of naming a number.
GE does not. Its listing states the genuine MWF is certified to NSF/ANSI drinking water standards to meet requirements set by independent and accredited organizations, and never says which standards. That is the weakest certification language of the five in a listing that otherwise names more contaminants than anyone else, including PFOA and PFOS and select pharmaceuticals.
One Materials Claim and One Sustainability Certificate
GLACIER FRESH is careful in a way worth reading closely. It states that the materials and construction comply with the NSF42 standard, then tells you to look up the manufacturer, Ningbo Pureza Technology, and the model GF-MWF in NSF’s database. That is an invitation to verify, which no other listing offers, and it is also a narrower claim than a certified cartridge.
Frigidaire’s is narrower still, though it does not read that way. Its only named certification is WQA/ASPE/ANSI S 803 for sustainability, which concerns the product’s environmental profile rather than what it takes out of the water. The filtration claims in its other bullets, lead, nitrates, pesticides and mercury, carry no standard at all.
Counts, Percentages and Which to Believe
Seventy-Four Contaminants Against 95.3 Percent
Two kinds of number appear in this pool and no listing publishes both. EveryDrop and GE count contaminants, 74 and 70 plus respectively, which tells you breadth and nothing about depth. Waterdrop and GLACIER FRESH publish a percentage for one named contaminant, 95.3 for PFOA and PFOS and 97.9 for chlorine, which tells you depth and nothing about breadth.
EveryDrop bridges the two once, with 99 percent of microplastics, and adds the only descriptive detail of its kind on the page: particles 60 times smaller than a grain of sand. That is a claim about a specific contaminant behind a specific figure, which is the shape a filtration claim should take.
What Each One Says It Removes
GE names the widest set of contaminants: lead, chlorine, PFOA and PFOS, microplastics and select pharmaceuticals, with its own bracketed caution that these are not necessarily found in all users’ water. Frigidaire names lead, nitrates, pesticides and mercury, and leads with the odor and taste of chlorine. Those are the two lists a buyer worried about metals would look at first.
GLACIER FRESH names only chlorine, which sits consistently with an NSF42 materials claim, and adds that the filter retains beneficial minerals while removing impurities. Waterdrop names chlorine, dirt and sediment alongside its PFOA and PFOS figure. Every one of these lists is the maker’s own, and none of them is the same shape as another.
Fit, Life and the Practical Business of Changing It
Fit Comes Before Chemistry
None of these five is interchangeable with another. Waterdrop publishes the longest compatibility list in the pool, covering UKF8001 in its Whirlpool, Maytag and Amana forms plus EveryDrop Filter 4, Kenmore, Bosch and Viking codes. EveryDrop covers Whirlpool, Maytag, KitchenAid, Amana and JennAir as the official filter for those brands.
On the GE side, the genuine MWF states compatibility with select GE, GE Profile, Cafe and Monogram refrigerators, and GLACIER FRESH lists the MWF code alongside MWFP, MWFA, GWF, HWF and other variants. Frigidaire’s ULTRAWF fits the PureSource Ultra system and nothing else on this page overlaps with it.
Six Months, 300 Gallons, or a Sheet of Stickers
GLACIER FRESH gives the most complete answer on replacement, stating 6 months or 300 gallons. GE states six months and offers a subscription so the next one arrives on its own. Frigidaire is the most honest about the annoyance: its refrigerators have a 6 month reminder, the light does not turn off by itself, and most models reset by holding the water filter button.
The two remaining picks handle it differently. Waterdrop publishes no interval and instead supplies installation stickers with every filter so you can mark the date yourself, noting that performance suffers if a filter runs past its date. EveryDrop publishes no life figure at all, which for a filter certified against 74 contaminants is a strange omission.
Which One Fits Your Kitchen
A Whirlpool family fridge and a spec sheet reader. Waterdrop names NSF/ANSI 401, 53, 42 and 372, publishes 95.3 percent reduction of PFOA and PFOS from an independent laboratory, names its carbon source in Sri Lanka, and supplies 3 cartridges with date stickers.
A Whirlpool family fridge still under warranty. EveryDrop Filter 3 is the official cartridge for Whirlpool, Maytag, KitchenAid, Amana and JennAir, certified to 42, 53 and 401, claiming 74 contaminants and 99 percent of microplastics, at 3.0 by 2.6 by 13.5 inches and 0.75 pounds.
A GE fridge and no patience for plumbing. The genuine GE MWF claims 70 plus impurities including lead, PFOA and PFOS, microplastics and select pharmaceuticals, installs with no tools and no water shutoff, and states a six month life. It never names a standard by number.
A GE fridge and a sceptical buyer. GLACIER FRESH gives you its NSF database entry to check, publishes 97.9 percent chlorine reduction by independent laboratory, states 6 months or 300 gallons, and twists into place. Its NSF42 claim covers materials and construction, not the cartridge.
A Frigidaire with a PureSource Ultra system. The ULTRAWF is Frigidaire’s own carbon based cartridge, named against chlorine odor and taste, lead, nitrates, pesticides and mercury, fitted by pushing until it clicks and then flushed for 3 minutes. Its certification covers sustainability.
What We Could Not Verify
Every figure above comes from the makers’ own listings. These are the things we went looking for and could not source.
- GE cites NSF/ANSI drinking water standards without naming a single standard number.
- Frigidaire’s only named certification, WQA/ASPE/ANSI S 803, covers sustainability rather than contaminant reduction.
- Neither Waterdrop nor EveryDrop publishes a filter life in months or in gallons.
- No listing publishes a flow rate or a pressure drop, so dispenser speed cannot be compared.
- No listing states which contaminants each named standard actually covers.
- Only EveryDrop publishes cartridge dimensions; the other four publish package figures that are discarded here.
