universal water filter cartridge
Skip itA small market ($40K/yr) — this niche doesn't clear our bar today.
Returns
Great1.4%return rate — above 5% kills the launch gate
Conversion
Great8.6%search→purchase rate — share of searches ending in a sale
Avg price
Good£14.46avg listing price — sweet spot $15–$100
Price range
Good£7.92–£25.78cheapest to priciest tracked listing — scored on the share inside $15–$100
Brand share
Good72%top-5 brand share — brands hold most of the demand
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Competition
Okay66%top-5 click share — leaders hold, buyers still browse
Review moat
Bad5,680.26avg incumbent reviews — the moat a new listing must climb
Growth
Bad-5.8%90-day search growth — must beat 0% to launch
Market size
Bad£40K£40K/yr · 33K searches
According to Flapen's Amazon United Kingdom niche tracking, universal water filter cartridge is a £40K/yr Amazon United Kingdom market (33K searches/yr). The top 5 brands hold 72% of demand. Verdict: Skip it — 44/100.
Data updated Jul 27, 2026 · scored weekly · How we score niches
universal water filter cartridge market data
- Units sold / yr
- 3K–3K
- avg 100–250/product
- Revenue / yr
- £36K–£43K
- units × avg price
- Conversion rate
- 8.6%
- Avg BSR
- #77
- Page quality
- 0%
- Prime
- 79%
- Sponsored
- 79%
- Out of stock
- 5.7%
- Avg brand age
- 55 months
- Avg seller age
- 166 days
Competition & brand share
The top 5 products take 66% of clicks — established leaders, but buyers still shop beyond them.Brands
15 falling
Sellers
49
Top-5 brand share
72%
Top 20: 100%
Top-5 click share
66%
Top 20: 100%
Open market
22%
- GN3D22%
- AQUAPHOR17%
- BRITA14%
- ICEPURE11%
- VILLAPOOL8%
- FilterLogic6%
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -5.8% search growth over the last 90 days.No pronounced peak months · busiest ÷ quietest = 1.4×
Top universal water filter cartridge search terms
- universal water filter cartridge15K/yr
- brita classic water filter cartridges9K/yr
- water filter cartridges universal4K/yr
- wilko water filter cartridges4K/yr
- brita water filter classic filters1K/yr
Top universal water filter cartridge 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.
All 19 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
6 Universal Water Filter Cartridge Compatible with Brita Classic Water Filter Jug Brita Jugs Dispensers Classic OB03 Everyday UltraMax Metro+ XL Mavea 107007 35557
GN3D£11.804.5★240 rev
AQUAPHOR B15 3 Pack Water Filter Cartridges up to 170L Filtered Water
AQUAPHOR£8.024.6★2,261 rev
BRITA Classic Cartridges Pack of 6
BRITA£25.784.7★6,446 rev
ICEPURE Water Filter Cartridges Compatible with Brita Classic Filter Jugs Brita Jugs and Dispensers Classic OB03 Everyday UltraMax Metro+ XL Mavea 107007 35557 6 Pieces
ICEPURE£12.444.6★3,770 rev
VILLAPOOL 6 Water Filter Cartridge Replacement for Brita Filters Classic OB03 Dispensers Everyday UltraMax Metro+ XL Mavea 107007 35557 Reducing Impurities Chlorine PFAS Limescale & Odor
VILLAPOOL£12.554.6★25 rev
Newest
by launch date
6 x ProWater Classic Universal Filter Cartridges Replacements for Brita Laica Dafi Kenwood Jugs
Prowater£10.3611 rev
VILLAPOOL 6 Water Filter Cartridge Replacement for Brita Filters Classic OB03 Dispensers Everyday UltraMax Metro+ XL Mavea 107007 35557 Reducing Impurities Chlorine PFAS Limescale & Odor
VILLAPOOL£12.5525 rev
6-Pack Brita Universal Filter Cartridges Replacement for All Brita Filter Jugs Long-Lasting Performance & Safety: Reduces Limescale Chlorine Lead Copper for Appliance Care and Healthier Water
BTRSOLUS£12.37263 rev
Aqua Optima Water Universal Filter Cartridge 30 Days (12 Months Supply) Compatible with Brita Classic 5 Stage Filtration System Reduces Chlorine Limescale and Other Impurities BPA Free White
Aqua Optima£20.92331 rev
6 Universal Water Filter Cartridge Compatible with Brita Classic Water Filter Jug Brita Jugs Dispensers Classic OB03 Everyday UltraMax Metro+ XL Mavea 107007 35557
GN3D£11.80240 rev
Trending
90-day click momentum6-Pack Brita Universal Filter Cartridges Replacement for All Brita Filter Jugs Long-Lasting Performance & Safety: Reduces Limescale Chlorine Lead Copper for Appliance Care and Healthier Water
BTRSOLUS£12.374.5★
ICEPURE Water Filter Cartridges Compatible with Brita Classic Filter Jugs Brita Jugs and Dispensers Classic OB03 Everyday UltraMax Metro+ XL Mavea 107007 35557 3 Pieces
ICEPURE£7.924.6★
BRITA Classic Cartridges Pack of 6
BRITA£25.784.7★
VILLAPOOL 6 Water Filter Cartridge Replacement for Brita Filters Classic OB03 Dispensers Everyday UltraMax Metro+ XL Mavea 107007 35557 Reducing Impurities Chlorine PFAS Limescale & Odor
VILLAPOOL£12.554.6★
6 x ProWater Classic Universal Filter Cartridges Replacements for Brita Laica Dafi Kenwood Jugs
Prowater£10.364.9★
What buyers say about universal water filter cartridge
What buyers praise and complain about, mined from review topics.What buyers love
“much cheaper”
“Best filter”
“Good product exactly as described”
“Fit perfect”
“Just what I needed”
“It also had them as a buy together as well as in the product detail as compatible”
“Easy to use”
“They do the job”
“Filters the water effectively”
“Durable”
What buyers complain about
“Not filtering”
“Not really compatible- needs blue adapter”
“Dont buy cheap”
“Garbage”
“does not fit the jug”
“Doesn't work”
“the instructions for the plug dont seem to match the cartridge”
“Not a match as advertised”
“After only one use of the value it broken”
“They do not let water through”
Top return reasons
Common questions
- Is universal water filter cartridge profitable to sell on Amazon United Kingdom?
- The niche generates £40K/yr across 19 tracked products. 1 of 3 products launched in the last 360 days are still selling. 90-day search growth is -5.8%. Flapen's verdict: Skip it (44/100).
- How competitive is the universal water filter cartridge niche?
- 15 brands and 49 sellers compete. The top 5 products take 66% of clicks and top 5 brands hold 72% of demand.
- What do buyers complain about in universal water filter cartridge?
- Top complaints mined from reviews: Filtration, Compatibility-Overall, Value For Money. The return rate is 1.4%.
- When does demand for universal water filter cartridge peak?
- Demand is steady year-round — the busiest month runs 1.4× the quietest.
- What does it cost to enter the universal water filter cartridge niche?
- Listings span £7.92–£25.78; the average listing price is £14.46 (sweet spot $15–$100). The average incumbent carries 5,680 reviews — the moat a new listing must climb.