water filter
Launch itA $3.4M/yr market growing +0.7% this quarter with returns at 1.0% — clears our launch bar.
Market size
Incredible£3.4M£3.4M/yr · 3.2M searches
Returns
Incredible1.0%return rate — above 5% kills the launch gate
Avg price
Great£21.89avg listing price — sweet spot $15–$100
Price range
Great£8.22–£102.17cheapest to priciest tracked listing — scored on the share inside $15–$100
Conversion
Good4.9%search→purchase rate — share of searches ending in a sale
Competition
Okay55%top-5 click share — leaders hold, buyers still browse
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Growth
Okay+0.7%90-day search growth — must beat 0% to launch
Review moat
Bad11,775.6avg incumbent reviews — the moat a new listing must climb
Brand share
Bad95%top-5 brand share — brand-locked demand
According to Flapen's Amazon United Kingdom niche tracking, water filter is a £3.4M/yr Amazon United Kingdom market (3.2M searches/yr). The top 5 brands hold 95% of demand. Verdict: Launch it — 56/100.
Data updated Jul 27, 2026 · scored weekly · How we score niches
water filter market data
- Units sold / yr
- 125K–150K
- avg 5,000–6,000/product
- Revenue / yr
- £2.7M–£3.3M
- units × avg price
- Conversion rate
- 4.9%
- Avg BSR
- #8
- Page quality
- 0%
- Prime
- 92%
- Sponsored
- 92%
- Out of stock
- 0.0%
- Avg brand age
- 52 months
- Avg seller age
- 174 days
Competition & brand share
The top 5 products take 55% of clicks — established leaders, but buyers still shop beyond them.Brands
7 falling
Sellers
85
Top-5 brand share
95%
Top 20: 100%
Top-5 click share
55%
Top 20: 94%
Open market
2%
- BRITA41%
- Waterdrop23%
- Aqua Optima20%
- PHILIPS6%
- AQUAPHOR5%
- Amazon Basics3%
- Open — no brand owns it (1 brand, 2%)
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — +0.7% search growth over the last 90 days.No pronounced peak months · busiest ÷ quietest = 1.5×
Top water filter search terms
- water filter1.7M/yr
- water filter jug703K/yr
- water purifier177K/yr
- filter jug131K/yr
- filter96K/yr
- water filter system97K/yr
- water filter jug and cartridges57K/yr
- water filter jugs83K/yr
- filters water jug31K/yr
- filter water jug25K/yr
Top 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.
All 24 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Aqua Optima Liscia Water Filter Jug & 3 Evolve+ Filter Cartridges 2.5L White - Fridge & Dishwasher Friendly Easy Fill - Reduces Limescale Chlorine & Other Impurities - By LAICA (Packaging May Vary)
Aqua Optima£10.214.6★9,936 rev
BRITA Marella Water Filter Jug Graphite (2.4L) Starter Pack incl. 3x MAXTRA PRO Pure Performance cartridge - fridge-fitting jug with digital LTI and Flip-Lid - now in sustainable Smart Box packaging
BRITA£17.974.7★11,462 rev
BRITA Flow XXL Water Filter Tank (8.2L) incl. 1x MAXTRA PRO Pure Performance cartridge - fridge-fitting dispenser for families and offices - now in sustainable Smart Box packaging
BRITA£30.064.5★5,976 rev
Philips Water Filter Jug +4 Taste+ Replacement Filter Cartridges Fast flow White 2.6 litres Electronic timer Packaging May Vary
PHILIPS£16.574.4★7,273 rev
Waterdrop Instant Electric Water Filter Jug with a 3-Months Filter 3.5L Countertop Water Filter System Reduces Chlorine Lead Mercury Reduce PFAS PFOA/PFOS 757 Litres Blue (NOT Reduce TDS)
Waterdrop£32.224.6★1,854 rev
Newest
by launch date
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.
Water2£102.17301 rev
Waterdrop Instant Electric Water Filter Jug with a 3-Months Filter WD-ED61B 3.5L Countertop Water Filter System Reduce 98% Chlorine and 20+ Contaminants Blue (NOT Reduce TDS)
Waterdrop£32.88673 rev
Waterdrop Instant Electric Water Filter Jug with a 3-Months Filter 3.5L Countertop Water Filter System Reduces Chlorine Lead Mercury Reduce PFAS PFOA/PFOS 757 Litres Blue (NOT Reduce TDS)
Waterdrop£32.221,854 rev
Waterdrop PT-05BL-L Water Filter Jug 1×90 Days Filter 2.5L NSF Certified Reduces Lead Fluoride Chlorine and More BPA Free Black
Waterdrop£8.6315,437 rev
Philips Water Filter Jug +4 Taste+ Replacement Filter Cartridges Fast flow White 2.6 litres Electronic timer Packaging May Vary
PHILIPS£16.577,273 rev
Trending
90-day click momentumWaterdrop Instant Electric Water Filter Jug with a 3-Months Filter WD-ED61B 3.5L Countertop Water Filter System Reduce 98% Chlorine and 20+ Contaminants Blue (NOT Reduce TDS)
Waterdrop£32.884.6★
BRITA Marella Water Filter Jug White (2.4L) Starter Pack incl. 3x MAXTRA PRO Pure Performance cartridge - fridge-fitting jug with digital LTI and Flip-Lid - now in sustainable Smart Box packaging
BRITA£18.104.7★
Aqua Optima Liscia Water Filter Jug & 3 Evolve+ Filter Cartridges 2.5L White - Fridge & Dishwasher Friendly Easy Fill - Reduces Limescale Chlorine & Other Impurities - By LAICA (Packaging May Vary)
Aqua Optima£10.214.6★
BRITA Marella Water Filter Jug Blue (2.4L) Starter Pack incl. 3x MAXTRA PRO Pure Performance cartridge - fridge-fitting jug with digital LTI and Flip-Lid - now in sustainable Smart Box packaging
BRITA£18.774.7★
Philips Water Filter Jug +4 Taste+ Replacement Filter Cartridges Fast flow White 2.6 litres Electronic timer Packaging May Vary
PHILIPS£16.574.4★
What buyers say about water filter
What buyers praise and complain about, mined from review topics.What buyers love
“Best filter”
“EXCELLENT PRODUCT”
“much cheaper”
“Easy fit”
“As advertised”
“Easy to use”
“Easy to install”
“Perfect water filter”
“They do the job”
“Really nice sleek design”
What buyers complain about
“Does not filter”
“Big”
“Not really compatible- needs blue adapter”
“Bad quality”
“better priced”
“They leak”
“Broke within two weeks”
“the function is not working”
“Instructions useless”
“The tank smell badly”
Top return reasons
Common questions
- Is water filter profitable to sell on Amazon United Kingdom?
- The niche generates £3.4M/yr across 25 tracked products. 90-day search growth is +0.7%. Flapen's verdict: Launch it (56/100).
- How competitive is the water filter niche?
- 7 brands and 85 sellers compete. The top 5 products take 55% of clicks and top 5 brands hold 95% of demand.
- What do buyers complain about in water filter?
- Top complaints mined from reviews: Filtration, Size-Overall, Compatibility-Overall. The return rate is 1.0%.
- When does demand for water filter peak?
- Demand is steady year-round — the busiest month runs 1.5× the quietest.
- What does it cost to enter the water filter niche?
- Listings span £8.22–£102.17; the average listing price is £21.89 (sweet spot $15–$100). The average incumbent carries 11,776 reviews — the moat a new listing must climb.