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Amazon.com > Tools & Home Improvement > Kitchen & Bath Fixtures > Water Filtration & Softeners > Replacement Water Filters > Replacement Under-Sink Water Filters
Waterdrop Undersink Replacement Water Filter Compo Pack, 2PP+CT+CS
More product info
From Waterdrop
This report was last updated 1/4/2024.
Refresh the report to view the most up-to-date data available:
Refresh the report to view the most up-to-date data available:
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Report Info:
Note: We only analyze "reviews" and ignore one-tap "ratings".
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Top products in Replacement Under-Sink Water Filters with authentic reviews:
Report Card
Pass Overall Grade
WARN 
Suspicious Reviewers
Suspicious ReviewersWARN Phrase Repetition
Phrase RepetitionPASS Rating Trend
Rating TrendPASS Unverified Purchases
Unverified PurchasesPASS Word Count Comparison
Word Count ComparisonPASS Overlapping Review History
Overlapping Review HistoryPASS Reviewer Ease
Reviewer EasePASS Brand Repeats
Brand RepeatsPASS Incentivized Reviews
Incentivized ReviewsPASS Deleted Reviews
Deleted ReviewsN/A Reviewer Participation
Reviewer Participation
Most Trusted Reviews
Our Waterdrop under-sink water filter is fantastic. Removes chlorine taste ... [Go to full review]
Dec 23, 2022
100%
TRUST
TRUST
-
Verified Purchaser
-
Easy Grader (avg. rating: 4.6)
Take-Back Reviewer (1 deleted Review; avg. rating: 5.0)
Contains repetitive phrases 
One-Hit Wonder
Overlapping Review History: reviewed 1 of 9 top products
Critical Reviewer (avg. rating: 4.1)
Least Trusted Reviews
We couldn't find any low-quality reviews
Analysis Details
Warn Suspicious Reviewers
Suspicious Reviewers
Take-Back Reviewers
Approximately 45% of reviewers have had at least one of their past reviews for another product deleted. While this is more Take-Back Reviewers than we'd expect to see, the discrepancy in ratings between the Take-Back Reviewers and reviewers who don't have any deleted reviews in their history isn't significant enough to rule out the possibility of it being due to random chance.
Warn Phrase Repetition
Phrase Repetition
Reviews that contain one of these phrases are NOT necessarily devalued; read more about how this test works here.
Common Phrases in Titles:
~92% of reviews
(5.0/5)
(5.0/5)
~100% of reviews
(4.9/5)
(4.9/5)
Approximately 85% of reviews use substantial repetitive phrases between them. This is an excessively large percentage which may indicate unnatural reviews.
Pass Rating Trend
Rating Trend
-
- <10%
- Created on high-volume days
We didn't notice any signals that would indicate reviews were created unevenly over time.
Read more about our Rating Trend test.
Read more about our Rating Trend test.
Pass Unverified Purchases
Unverified Purchases
-
- 0%
- Unverified Purchases
0 of the 104 total reviews for this product are unverified purchases. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
Unverified purchases may be the result of Kindle Unlimited readers, buyers who didn't pay full price, or reviewers who did not purchase the product at Amazon. Read more about our Unverified Purchases test.
Unverified purchases may be the result of Kindle Unlimited readers, buyers who didn't pay full price, or reviewers who did not purchase the product at Amazon. Read more about our Unverified Purchases test.
Pass Word Count Comparison
Word Count Comparison
-
- <10%
- Have an overrepresented word count
We didn't find any review word count groups that had a statistically significant greater concentration than what we'd expect to see in this category.
Read more about our Word Count Comparison test.
Read more about our Word Count Comparison test.
Pass Overlapping Review History
Overlapping Review History
Reviewers of this product have ALSO reviewed the following products:
~30% also reviewed:
Possini Euro Design Skyridge Modern Outdoor Wall... by Possini Euro Design
~25% also reviewed:
Enerwave Z-Wave Plug-in Wireless ON/OFF Switch... by Enerwave
~15% also reviewed:
Coastal Pet Size Right Snag-Proof Adjustable Cat... by Coastal
~15% also reviewed:
Philips 259507 Friends of Hue Personal Wireless... by Philips
~15% also reviewed:
HATCHBOX 1.75mm Gold PLA 3D Printer Filament, 1... by HATCHBOX
~15% also reviewed:
Epson Expression XP-410 Wireless Color All-in-One... by Epson
~15% also reviewed:
Neetto Laptop Height Adjustable Bed Table,... by Avantree
~15% also reviewed:
Philips Hue 464479 Hue White and Color Ambiance... by Philips Hue
~15% also reviewed:
Prepac Elite 32" Storage Cabinet, Black... by Prepac
Approximately 25% of reviewers have substantial overlapping product review history. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
Pass Reviewer Ease
Reviewer Ease
The ease score is the average rating for all reviews that a given reviewer submits. The average ease score for reviewers of this product is 4.4, while the average ease score for reviewers in this category is 4.3. While this discrepancy is rather large, it is not quite large enough to rule out the possibility of it being due random chance.
4.4 Product's Average Ease Score
4.3 Category's Average Ease Score
Read more about our Reviewer Ease test.
Pass Brand Repeats
Brand Repeats
Brand Repeaters
We didn't detect a substantial amount of Brand Repeaters.
Pass Incentivized Reviews
Incentivized Reviews
On Oct 3, 2016, Amazon prohibited incentivized reviews, however we still test for them since there are still millions in our dataset.
-
- <10%
- Admitted to receiving an incentive
We didn't detect any reviews that used language indicating they were incentivized.
Read more about our Incentivized Reviews test. Check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.
Read more about our Incentivized Reviews test. Check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.
Pass Deleted Reviews
Deleted Reviews
- 0
- Reviews have been deleted
We have not discovered any deleted reviews for this product.
There are a few limitations to keep in mind regarding the Deleted Reviews test:
There are a few limitations to keep in mind regarding the Deleted Reviews test:
- We don't have a magic ability to collect every single deleted review; we can only identify reviews as deleted if we collect them on one date and then notice they are no longer visible on a subsequent date.
- We have no information on reviews that were never published in the first place.
- We also don't know why these reviews were removed. It could be action from the platform, personal decision by the review author, part of an entire account closure, even some data error on our part, etc.