---
title: "Gravity Water Filter — £123K/yr Amazon UK Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/uk/diy-tools/gravity-water-filter"
last_updated: "2026-07-31T12:35:48.721Z"
locale: en
meta:
description: "Niche score 32/100 · £123K/yr market · 59K searches/yr · £83.11 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 32/100 · £123K/yr market · 59K searches/yr · £83.11 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Gravity Water Filter — £123K/yr Amazon UK Niche (2026) - Flapen"
---
# **gravity water filter**
**Skip it**
Brand-locked demand (top 5 brands take 98% of clicks) — this niche doesn't clear our bar today.
Market size 28Growth 12Conversion 31Competition 21Returns 51Price range 52Avg price 81Brand share 5Review moat 63Quality gap 45
**Avg price**
**Great****£83.11**
avg listing price — sweet spot $15–$100
**Review moat**
**Good****965.57**
avg incumbent reviews — the moat a new listing must climb
**Price range**
**Good****£20.95–£172.26**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Returns**
**Good****2.9%**
return rate — above 5% kills the launch gate
**Quality gap**
**Okay****4.5★**
avg incumbent rating — lower means beatable quality
**Conversion**
**Okay****2.5%**
search→purchase rate — share of searches ending in a sale
**Market size**
**Okay****£123K**
£123K/yr · 59K searches
**Competition**
**Bad****75%**
top-5 click share — a locked-up shelf
**Growth**
**Bad****-25.8%**
90-day search growth — must beat 0% to launch
**Brand share**
**Bad****98%**
top-5 brand share — brand-locked demand
**Signals**[** High Price**](https://flapen.com/research/niches?market=uk&signal=high_price "Avg price > $50")
According to Flapen's Amazon United Kingdom niche tracking, gravity water filter is a £123K/yr Amazon United Kingdom market (59K searches/yr). The top 5 brands hold 98% of demand. Verdict: Skip it — 32/100.
Data updated Jul 22, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **gravity water filter market data**
- **Units sold / yr**
- **1K–2K**
- avg 0–100/product
- **Revenue / yr**
- **£104K–£125K**
- units × avg price
- **Conversion rate**
- **2.5%**
- **Avg BSR**
- **#92**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **93%**
- **Out of stock**
- **7.1%**
- **Avg brand age**
- **53 months**
- **Avg seller age**
- **196 days**
## **Competition & brand share**
The top 5 products capture 75% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**6 **—flat
**Sellers**
**9**
**Top-5 brand share**
**98%**
Top 20: 100%
**Top-5 click share**
**75%**
Top 20: 100%
**Open market**
**0%**
- DOULTON74% - Waterdrop8% - INVIGORATED WATER8% - ULTGRT6% - Purewell2% - CO-Z2%
## **Top gravity water filter search terms**
- **british berkefeld water filter**15K/yr-21.5%4.2% conv. - **gravity water filter**17K/yr-27.3%0.9% conv. - **stainless steel water filter**7K/yr+18.8%0.4% conv. - **ceramic water filter**8K/yr-42.2%0.1% conv. - **berkefeld water filter**5K/yr-37.1%4.7% conv. - **gravity water filter system**5K/yr-32.5%0.6% conv. - **british berkefeld**3K/yr-32.1%1.9% conv. [**All search terms **](https://flapen.com/research/uk/diy-tools/gravity-water-filter/search-terms)
## **Top gravity water filter products on Amazon**
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
0%10%£12K20%£25K30%£37K40%£49K1101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)1 product missing review or click data not plotted
All 14 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**British Berkefeld 6L Ultra Sterasyl Gravity Water Filter System**DOULTON**£129.68**4.5★795 rev](https://www.amazon.co.uk/dp/B09P41JNNX) [2**British Berkefeld 8.5L Ultra Sterasyl Gravity Water Filter System**DOULTON**£142.19**4.5★795 rev](https://www.amazon.co.uk/dp/B0DJPDY1V3) [3**British Berkefeld 7 Ultra Sterasyl Ceramic Gravity Filter Cartridge | 2 Pack| Reduces Contaminants | Suitable for All Gravity Cans | Improves Taste & Odour | NSF Certified Candle Element**DOULTON**£36.83**4.7★1,058 rev](https://www.amazon.co.uk/dp/B00519CVJ8) [4**British Berkefeld 12L Ultra Sterasyl Gravity Water Filter System**DOULTON**£162.84**4.5★795 rev](https://www.amazon.co.uk/dp/B09NC1WX95) [5**pH Recharge Glass Alkaline Countertop Water Filter Dispenser - 2.25 Gallons Jug - Removes Fluoride Chlorine & Impurities - Improves Water pH - Clean Healthy Drinking Water - 8.5 Litres**INVIGORATED WATER**£51.62**4.1★2,229 rev](https://www.amazon.co.uk/dp/B07W2WN261)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**2.25G Gravity Water Filtration System Countertop Water Filter 304 Stainless Steel Gravity-Fed Water Purifier with 2 Composite Ceramic Filters & Stand SQ-GTK-CCB**ULTGRT**£73.28**1 rev10mo ago](https://www.amazon.co.uk/dp/B0FRMVM36J) [**2.25G Gravity Water Filtration System 2-Stage 0.01m Ultra-Filtration Countertop Water Filter 304 Stainless Steel Gravity-Fed Water Purifier with 2 Composite Carbon Filters & Stand SQ-GTK-CUM**ULTGRT**£74.30**0 rev10mo ago](https://www.amazon.co.uk/dp/B0FRMWLS5N) [**CO-Z Gravity-Fed Water Filter System 8.5L UV Countertop Water Filtration System Stainless Steel Water Purifier with 2 Carbon Filters Water Level Spigot Chamber Stand NSF/ANSI 42 Certification**CO-Z**£85.54**160 rev1y ago](https://www.amazon.co.uk/dp/B0DPWZ8W75) [**British Berkefeld 8.5L Ultra Sterasyl Gravity Water Filter System**DOULTON**£142.19**795 rev1y ago](https://www.amazon.co.uk/dp/B0DJPDY1V3) [**British Berkefeld 8.5L Ultra Fluoride Gravity Water Filter System**DOULTON**£172.26**29 rev1y ago](https://www.amazon.co.uk/dp/B0C2D9BW8V)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**2.25G Gravity Water Filtration System 2-Stage 0.01m Ultra-Filtration Countertop Water Filter 304 Stainless Steel Gravity-Fed Water Purifier with 2 Composite Carbon Filters & Stand SQ-GTK-CUM**ULTGRT**£74.30**0.0★**▲ 192%**](https://www.amazon.co.uk/dp/B0FRMWLS5N) [**Purewell 8 5L Gravity Water Filter System Stainless Steel Countertop with 2 Filters Stand & Water Level Window Removes 99% Chlorine for Home Camping & Survival**Purewell**£127.13**4.6★**▲ 135%**](https://www.amazon.co.uk/dp/B0CGZZ8YXF) [**2.25G Gravity Water Filtration System Countertop Water Filter 304 Stainless Steel Gravity-Fed Water Purifier with 2 Composite Ceramic Filters & Stand SQ-GTK-CCB**ULTGRT**£73.28**5.0★**▲ 124%**](https://www.amazon.co.uk/dp/B0FRMVM36J) [**CO-Z Gravity-Fed Water Filter System 8.5L UV Countertop Water Filtration System Stainless Steel Water Purifier with 2 Carbon Filters Water Level Spigot Chamber Stand NSF/ANSI 42 Certification**CO-Z**£85.54**4.3★**▲ 75%**](https://www.amazon.co.uk/dp/B0DPWZ8W75) [**British Berkefeld 8.5L Ultra Sterasyl Gravity Water Filter System**DOULTON**£142.19**4.5★**▲ 29%**](https://www.amazon.co.uk/dp/B0DJPDY1V3)
**~~View all trending →~~**
## **What buyers say about gravity water filter**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Filtration**22%
*“The filter works well”*
**Quality-Overall**19%
*“Excellent Quality”*
**Value For Money**11%
*“Reasonably priced”*
**Size-Overall**9%
*“Great fit”*
**Ease Of Use**3%
*“Easy to use”*
**Design-Overall**3%
*“Great water filter looks stylish”*
**Advertised Vs Actual Product**3%
*“Does the job”*
**Water Resistance**3%
*“I love that the water comes steadily through the waterproof filter”*
**Assembly/Installation**3%
*“It was easy to assemble”*
**Efficiency**2%
*“It works so well”*
### **What buyers complain about **
**Leak-Proof**22%
*“it started leaking”*
**Filtration**16%
*“Not as good as the Phox jug water filter”*
**Size-Overall**12%
*“the adapter doesn't fit”*
**Quality-Overall**5%
*“I was shocked that it was worse quality then my tap as I have a water meter its was green from the tap”*
**Value For Money**5%
*“The filters are also rather expensive”*
**Compatibility-Overall**3%
*“Doesn't fit all taps”*
**Water Resistance**2%
*“why on earth it can not be used on anything other than clean tap water if it does really filter all the bad out”*
**Functionality-Overall**2%
*“then it stopped working so Im trying to send this back”*
**Storage Capacity**2%
*“Large unit needs space”*
**Advertised Vs Actual Product**2%
*“Misleading”*
### **Top return reasons **
**Size-Overall**43%
**Compatibility-Overall**20%
**Leak-Proof**9%
**Filtration**9%
**Functionality-Overall**4%
**Connectivity-Overall**2%
**Add-Ons/Attachments**2%
**Defective Material/Parts**2%
**Advertised Vs Actual Product**1%
**Assembly/Installation**1%
## **Common questions**
- **Is gravity water filter profitable to sell on Amazon United Kingdom?**
- The niche generates £123K/yr across 14 tracked products. 0 of 2 products launched in the last 360 days are still selling. 90-day search growth is -25.8%. Flapen's verdict: Skip it (32/100).
- **How competitive is the gravity water filter niche?**
- 6 brands and 9 sellers compete. The top 5 products take 75% of clicks and top 5 brands hold 98% of demand.
- **What do buyers complain about in gravity water filter?**
- Top complaints mined from reviews: Leak-Proof, Filtration, Size-Overall. The return rate is 2.9%.
- **What does it cost to enter the gravity water filter niche?**
- Listings span £20.95–£172.26; the average listing price is £83.11 (sweet spot $15–$100). The average incumbent carries 966 reviews — the moat a new listing must climb.
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