Waterdrop EWF01 Water Filter Review
Our verdict
The Waterdrop EWF01 is a compact NSF-certified replacement filter sold in a 3-pack, making it a reasonable per-filter value at roughly $15.66 each. With a 4.7-star rating from 270 reviews, early buyer feedback is consistently positive, though the pool of reviewers is still moderate.
Check price on AmazonBest for
Owners of compatible Equator OR400 appliances who want an NSF-certified replacement without hunting for an OEM part
Skip if
Your refrigerator or appliance model is not the Equator OR400, or you need a filter with NSF 53 or NSF 401 certifications for contaminant reduction beyond aesthetic improvement
- Certification Nsf
- Fits Equator Or400
- Pack 3
- Dimensions 4.53 X 6.5 X 6.89 In
- Priced 68% above the category median ($27.99 across 140 tracked models)
Our scorecard
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Owner rating4.7/5
4.7 average across 270 owner ratings
-
Popularity1.1/5
270 owner reviews, fewer than most models here
The overall score is owner satisfaction weighted by how many reviews back it, so a high rating from few reviews counts for less. The bars below show where this model stands against the other water filtration: replacement filters, under-sink and reverse osmosis systems, filter pitchers, water dispensers, coolers, faucet filters and softeners we track in this category on price, popularity and size. Context, not marks against it, and our read of the data, not a lab test.
Overview
['The Waterdrop EWF01 comes in a 3-pack at $46.99, placing it in the mid-range tier for refrigerator replacement filters. At about $15.66 per cartridge, the per-filter cost is competitive compared with OEM alternatives for compatible machines.', 'Waterdrop lists NSF certification for this filter. Based on that designation, it is designed to reduce aesthetic impurities such as chlorine taste and odor. No NSF 53 or 401 certification data is available in the facts on file, so buyers who need certified reduction of lead, cysts, or pharmaceuticals should verify the specific certification scope directly with Waterdrop before purchasing.', 'At 4.53 x 6.5 x 6.89 inches, the EWF01 is on the larger side compared with slim inline designs, so confirm the housing dimensions before ordering. The filter is listed as compatible with the Equator OR400, and Waterdrop customer support (hello@aquagroove.com is not Waterdrop support) can clarify additional compatible models.']
Pros
- NSF certified, providing third-party verification of filter claims
- 3-pack format reduces per-cartridge cost to roughly $15.66
- 4.7-star rating reflects a high level of buyer satisfaction
- Designed to reduce chlorine taste and odor for better-tasting water
Cons
- Only 270 reviews on file, so the satisfaction signal is based on a relatively small sample
- No capacity or filter life data is published in available specs, making replacement scheduling uncertain
- Specific certification scope (NSF 42 vs. 53 vs. 401) is not detailed in available facts
Specifications
| Certification | Nsf |
|---|---|
| Fits | Equator Or400 |
| Pack | 3 |
| Dimensions | 4.53 X 6.5 X 6.89 In |
Performance notes
The EWF01 carries NSF certification. Without a published certification standard number in the available spec data, buyers should confirm whether coverage includes NSF 42 (aesthetic), NSF 53 (health effects), or NSF 401 (emerging compounds). Dimensions of 4.53 x 6.5 x 6.89 inches suggest a block-style or canister form factor. No flow-rate or gallon-capacity data is available to assess how long each cartridge lasts under typical household use.
What buyers say
With a 4.7-star average across 270 ratings, buyers are broadly satisfied. That score puts the EWF01 among the higher-rated filters in its class, though a sample of 270 is moderate compared with best-selling competitors that often carry thousands of reviews. No notable complaint patterns can be identified from the available data.
More from Waterdrop
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Frequently asked questions
Is the Waterdrop EWF01 a direct replacement for OEM filters?
The EWF01 is listed as compatible with the Equator OR400 appliance. It is a third-party aftermarket filter, not an OEM part. Most aftermarket filters use the same connection interface as the original, but it is worth confirming the twist-lock or push-in mechanism matches your specific model before installing.
How long does each EWF01 cartridge last?
No filter-life or gallon-capacity specification is listed in the available product data. Most refrigerator replacement filters are rated for approximately 6 months or 200 to 300 gallons under average household use, but you should check the Waterdrop product page or packaging for the confirmed life rating specific to this model.
Does the EWF01 reduce lead or cysts?
The available spec data lists NSF certification without specifying the standard number. NSF 42 covers aesthetic qualities like chlorine taste and odor, while NSF 53 covers health-effects contaminants including lead and cysts. Check the Waterdrop listing or contact them directly to confirm which NSF standard applies to the EWF01 before relying on it for health-related filtration.