Under Sink Water Filter
brand-locked demand (top 5 brands take 95% of clicks) — Under Sink Water Filter doesn't clear our bar today.
Flapen Score
Is Under Sink Water Filter profitable on Amazon?
According to Flapen's Amazon United Kingdom niche tracking, Under Sink Water Filter is a £196K/yr Amazon United Kingdom market (143K searches/yr). The top 5 brands hold 95% of demand. Demand peaks in Jul–Nov. Verdict: Skip it — 38/100.
Under Sink Water Filter: the Amazon niche in one read
Everything a seller checks before entering, in three answers.
Is the demand real?
Not really. Search demand moved -2.1% over the last 90 days and 2.4% of searches end in a purchase.
£196K
revenue / yr
Who owns the niche?
The top 5 brands hold 95% of demand, so 5% of the market is open.
5%
open market share
Is there a way in?
Listing quality. The average product page scores 0/100 on content standards. Incumbents average 4.5★ — the gap to enter on.
0/100
page quality · 12 products
Top Under Sink Water Filter products & what they sell for
Every tracked product — its share of the shelf, its review moat, and what it sells for.
Top sellers
by 90-day click share
Waterdrop 10UA Under Sink Water Filter 11000 gallons High Capacity Water Filter System NSF/ANSI 42 Certified Reduce PFAS PFOA/PFOS Reduce Lead Chlorine Bad Taste Odor
- Price
- £49.13
- Rating
- 4.5/5
- Reviews
- 12,980
- Age
- 6y ago
Waterdrop TSA Under Sink Water Filter System 3-Stage High Capacity Water Filtration System NSF/ANSI 42 Certified Reduce PFAS PFOA/PFOS Reduce Lead Chlorine Bad Taste
- Price
- £90.48
- Rating
- 4.4/5
- Reviews
- 6,601
- Age
- 5y ago
Water2 Pod 2.0 Under Sink Filter - Reduces Contaminants for Filtered Better-Tasting Water. Quick & Easy to Install. Backed by Bear Grylls. Kit - Includes Capsule Flexis Smart Buzzer & Guide.
- Price
- £102.17
- Rating
- 4.5/5
- Reviews
- 301
- Age
- 1y ago
Waterdrop 10UA PRO Under Sink Water Filter No Drilling Required Time Reminder Easy Installation Reduces Lead Chlorine Bad Taste & Odor NSF/ANSI 42 Certified 11000 Gallons Does not Lower TDS
- Price
- £52.22
- Rating
- 4.5/5
- Reviews
- 155
- Age
- 1y ago
Waterdrop 10UA-UF 0.01 m Ultra Filtration Under Sink Water Filter for Baçtria Reduction 30 000 Liters Chlorine Reduction Capacity Direct Connect to Kitchen Faucet Reduce PFAS PFOA/PFOS
- Price
- £56.99
- Rating
- 4.4/5
- Reviews
- 2,807
- Age
- 5y ago
Trending
90-day click momentum
Ibergrif Undersink Water Filter System NSF/ANSI 42 Certified Reduces Chlorine Lead Fluoride Bad Taste and Odor Quick Installation Black-M91009
- Price
- £30.99
- Rating
- 4.3/5
- Reviews
- 306
- Age
- 2y ago
GOLDEN ICEPURE 2 Pieces Refrigerator Water Filter Compatible with Samsung DA29-10105J DA29-10105J HAFEX/EXP DA99-02131B WSF-100 EF9603 HAIER LG Inline Refrigerator
- Price
- £10.68
- Rating
- 4.6/5
- Reviews
- 15,535
- Age
- 8y ago
Waterdrop 10UA PRO Under Sink Water Filter No Drilling Required Time Reminder Easy Installation Reduces Lead Chlorine Bad Taste & Odor NSF/ANSI 42 Certified 11000 Gallons Does not Lower TDS
- Price
- £52.22
- Rating
- 4.5/5
- Reviews
- 155
- Age
- 1y ago
Waterdrop TSU 0.01m Ultra-Filtration Under Sink Water Filter System 3-Stage High Capacity USA Tech Smart Panel No Waste Water 2 Years Lifetime
- Price
- £130.58
- Rating
- 4.4/5
- Reviews
- 6,601
- Age
- 6y ago
Waterdrop 10UA Under Sink Water Filter 11000 gallons High Capacity Water Filter System NSF/ANSI 42 Certified Reduce PFAS PFOA/PFOS Reduce Lead Chlorine Bad Taste Odor
- Price
- £49.13
- Rating
- 4.5/5
- Reviews
- 12,980
- Age
- 6y ago
Newest
by launch dateWaterdrop 10UA PRO Under Sink Water Filter No Drilling Required Time Reminder Easy Installation Reduces Lead Chlorine Bad Taste & Odor NSF/ANSI 42 Certified 11000 Gallons Does not Lower TDS
- Price
- £52.22
- Rating
- 4.5/5
- Reviews
- 155
- Age
- 1y ago
Water2 Pod 2.0 Under Sink Filter - Reduces Contaminants for Filtered Better-Tasting Water. Quick & Easy to Install. Backed by Bear Grylls. Kit - Includes Capsule Flexis Smart Buzzer & Guide.
- Price
- £102.17
- Rating
- 4.5/5
- Reviews
- 301
- Age
- 1y ago
Ibergrif Undersink Water Filter System NSF/ANSI 42 Certified Reduces Chlorine Lead Fluoride Bad Taste and Odor Quick Installation Black-M91009
- Price
- £30.99
- Rating
- 4.3/5
- Reviews
- 306
- Age
- 2y ago
Under Sink Water Filter System High Capacity 80 000 Litres Undersink Drinking Water Filtration System Reduce Heavy Metals Chlorine Bad Taste Odours
- Price
- £49.24
- Rating
- 4.6/5
- Reviews
- 89
- Age
- 2y ago
Waterdrop TSA Under Sink Water Filter System 3-Stage High Capacity Water Filtration System NSF/ANSI 42 Certified Reduce PFAS PFOA/PFOS Reduce Lead Chlorine Bad Taste
- Price
- £90.48
- Rating
- 4.4/5
- Reviews
- 6,601
- Age
- 5y ago
Competition: brands, sellers & click share
The top 5 products capture 77% of clicks — a locked-up shelf that new listings rarely crack.
Brands
7 falling
Sellers
14
Top-5 brand share
95%
Top 20: 100%
Top-5 click share
77%
Top 20: 100%
Open market
2%
- Waterdrop73%
- Water210%
- AQUA CREST6%
- Finest-Filters4%
- Finerfilters3%
- GOLDEN ICEPURE3%
- Open — no brand owns it (1 brand, 2%)
Under Sink Water Filter demand & seasonality
Weekly search volume, with the niche's key stats alongside.
Peak months: Jul, Nov · busiest ÷ quietest = 2.0×
Top Under Sink Water Filter search terms shoppers use
The exact queries shoppers type, with yearly volume, growth and conversion.
- under sink water filter52K/yr
- inline water filter17K/yr
- under sink water filters12K/yr
- water filter under sink12K/yr
- undersink water filter system8K/yr
- under sink water filter system9K/yr
- in line water filter5K/yr
- under sink filter5K/yr
- under-sink filters5K/yr
- waterdrop under sink filter3K/yr
What reviews say buyers love and hate about Under Sink Water Filter
What buyers mention most, as a share of all reviews.
What buyers love
86% of reviews“Great water filter”
“Easy install”
“Excellent product”
“Easy fit”
“reasonable price”
What buyers complain about
61% of reviews“Was a little sceptical with these type of filters”
“can be expensive”
“Installation was abit of pain”
“It was a bit fiddly to fit”
“found it impossible to disconnect”
Under Sink Water Filter return rate & reasons
Why buyers send it back, as a share of all return requests.
1.8%
Return rate
37%
Fixable by listing
The "fixable" share counts expectation-mismatch reasons — size, look, advertised-vs-actual — that better copy and images address.
Common Under Sink Water Filter questions
The questions sellers ask about this niche, answered from the tracked metrics.
Related niches
Same-category niches scoring near this one — the next ones worth researching.
Best Flapen score
The highest-scoring niches we track right now, across every category.
