deionised water
Skip itBrand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.
Returns
Incredible0.1%return rate — above 5% kills the launch gate
Conversion
Incredible16.0%search→purchase rate — share of searches ending in a sale
Review moat
Good593.43avg incumbent reviews — the moat a new listing must climb
Market size
Good£480K£480K/yr · 286K searches
Growth
Good+21.1%90-day search growth — must beat 0% to launch
Avg price
Okay£10.51avg listing price — sweet spot $15–$100
Quality gap
Bad4.6★avg incumbent rating — lower means beatable quality
Competition
Bad93%top-5 click share — a locked-up shelf
Price range
Bad£5.75–£15.55cheapest to priciest tracked listing — scored on the share inside $15–$100
Brand share
Bad100%top-5 brand share — brand-locked demand
According to Flapen's Amazon United Kingdom niche tracking, deionised water is a £480K/yr Amazon United Kingdom market (286K searches/yr). The top 5 brands hold 100% of demand. Demand peaks in Jan–Feb–Mar–Oct. Verdict: Skip it — 45/100.
Data updated Jul 18, 2026 · scored weekly · How we score niches
deionised water market data
- Units sold / yr
- 60K–80K
- avg 12,500–15,000/product
- Revenue / yr
- £631K–£841K
- units × avg price
- Conversion rate
- 16.0%
- Avg BSR
- #27
- Page quality
- 0%
- Prime
- 14%
- Sponsored
- 100%
- Out of stock
- 0.0%
- Avg brand age
- 58 months
- Avg seller age
- 178 days
Competition & brand share
The top 5 products capture 93% of clicks — a locked-up shelf that new listings rarely crack.Brands
3 falling
Sellers
7
Top-5 brand share
100%
Top 20: 100%
Top-5 click share
93%
Top 20: 100%
Open market
0%
- Hexeal76%
- Pure Safe17%
- Filo7%
- Open — no brand owns it (0%)
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — +21.1% search growth over the last 90 days.Peak months: Jan, Feb, Mar, Oct · busiest ÷ quietest = 2.8×
Top deionised water search terms
- deionised water113K/yr
- deionised water 5l42K/yr
- de ionised water25K/yr
- deionised water for steam iron14K/yr
- de ionised water 5l13K/yr
- ionised water16K/yr
- de-ionised water10K/yr
- distilled water for steam irons11K/yr
- deionised water 2.5l5K/yr
- carplan de-ionised water7K/yr
Top deionised water 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 7 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Hexeal Deionised Water 10L 10L of Deionised Water for Steam Irons Car Batteries Windscreen Fluid & Antifreeze Demineralised Water Reduces Limescale Deposits & Water Stains For Lab Use
Hexeal£8.184.6★1,412 rev
Pure Safe Deionised Water 5 Litre Mineral-Free Water for Car Batteries Steam Irons Cleaning & Laboratory Use No Impurities Multi-Purpose Distilled Water Alternative
Pure Safe£6.054.7★414 rev
Hexeal Deionised Water 5L for Steam Irons Car Batteries Windscreen Fluid & Antifreeze - Demineralised Reduces Limescale Deposits & Stains - For Lab Use
Hexeal£5.754.6★665 rev
Hexeal Deionised Water 20L 4 x 5L of Deionised Water for Steam Irons Car Batteries Windscreen Fluid & Antifreeze Demineralised Water Reduces Limescale Deposits & Water Stains For Lab Use
Hexeal£15.554.7★459 rev
Hexeal Deionised Water 25L 25L of Deionised Water for Steam Irons Car Batteries Windscreen Fluid & Antifreeze Demineralised Water Reduces Limescale Deposits & Water Stains For Lab Use
Hexeal£15.254.7★982 rev
Newest
by launch datePure Safe Deionised Water 5 Litre Mineral-Free Water for Car Batteries Steam Irons Cleaning & Laboratory Use No Impurities Multi-Purpose Distilled Water Alternative
Pure Safe£6.05414 rev
Filo Deionised Water 20l (4x5L) Purified De Ionised Water for Car Batteries Screen Wash Radiators Cooling Systems and Iron Water for Steam Iron
Filo£14.43111 rev
Filo Deionised Water 10l (2x 5L) Purified De Ionised Water for Car Batteries Screen Wash Radiators Cooling Systems and Iron Water for Steam Iron
Filo£8.34111 rev
Hexeal Deionised Water 20L 4 x 5L of Deionised Water for Steam Irons Car Batteries Windscreen Fluid & Antifreeze Demineralised Water Reduces Limescale Deposits & Water Stains For Lab Use
Hexeal£15.55459 rev
Hexeal Deionised Water 5L for Steam Irons Car Batteries Windscreen Fluid & Antifreeze - Demineralised Reduces Limescale Deposits & Stains - For Lab Use
Hexeal£5.75665 rev
Trending
90-day click momentumFilo Deionised Water 10l (2x 5L) Purified De Ionised Water for Car Batteries Screen Wash Radiators Cooling Systems and Iron Water for Steam Iron
Filo£8.344.6★
Filo Deionised Water 20l (4x5L) Purified De Ionised Water for Car Batteries Screen Wash Radiators Cooling Systems and Iron Water for Steam Iron
Filo£14.434.6★
Hexeal Deionised Water 10L 10L of Deionised Water for Steam Irons Car Batteries Windscreen Fluid & Antifreeze Demineralised Water Reduces Limescale Deposits & Water Stains For Lab Use
Hexeal£8.184.6★
Hexeal Deionised Water 20L 4 x 5L of Deionised Water for Steam Irons Car Batteries Windscreen Fluid & Antifreeze Demineralised Water Reduces Limescale Deposits & Water Stains For Lab Use
Hexeal£15.554.7★
Hexeal Deionised Water 25L 25L of Deionised Water for Steam Irons Car Batteries Windscreen Fluid & Antifreeze Demineralised Water Reduces Limescale Deposits & Water Stains For Lab Use
Hexeal£15.254.7★
What buyers say about deionised water
What buyers praise and complain about, mined from review topics.What buyers love
“Good value for money”
“As described”
“Great product”
“Great to use in the iron”
“Water that works”
“Is non-fragranced and is reasonable compared to others available in grocery stores for steam irons”
“perfect size”
“Keep it clean”
“The deionised water prevents limescale contamination”
“useful for electrical appliances”
What buyers complain about
“Unsealed lids, leaked before arriving”
“Really hard to open”
“Not worth the money imho”
“it certainly have less minerals then my tap water”
“try a brand with better quality containers”
“cannot guarantee to be bacteria free”
“Like fake strawberry chemical smell”
Top return reasons
Common questions
- Is deionised water profitable to sell on Amazon United Kingdom?
- The niche generates £480K/yr across 7 tracked products. 90-day search growth is +21.1%. Flapen's verdict: Skip it (45/100).
- How competitive is the deionised water niche?
- 3 brands and 7 sellers compete. The top 5 products take 93% of clicks and top 5 brands hold 100% of demand.
- What do buyers complain about in deionised water?
- Top complaints mined from reviews: Leak-Proof, Ease Of Use, Value For Money. The return rate is 0.1%.
- When does demand for deionised water peak?
- Demand peaks in Jan–Feb–Mar–Oct; the busiest month runs 2.8× the quietest.
- What does it cost to enter the deionised water niche?
- Listings span £5.75–£15.55; the average listing price is £10.51 (sweet spot $15–$100). The average incumbent carries 593 reviews — the moat a new listing must climb.