Is 100 gallon water tank profitable to sell on Amazon United States?

The niche generates $366K/yr across 36 tracked products. 2 of 9 products launched in the last 360 days are still selling. 90-day search growth is +19.0%. Flapen's verdict: Worth a look (55/100).

How competitive is the 100 gallon water tank niche?

24 brands and 60 sellers compete. The top 5 products take 44% of clicks and top 5 brands hold 69% of demand.

What do buyers complain about in 100 gallon water tank?

Top complaints mined from reviews: Leak-Proof, Size-Overall, Durability. The return rate is 1.7%.

When does demand for 100 gallon water tank peak?

Demand is steady year-round — the busiest month runs 1.8× the quietest.

What does it cost to enter the 100 gallon water tank niche?

Listings span $35.26–$694.35; the average listing price is $200.49 (sweet spot $15–$100). The average incumbent carries 287 reviews — the moat a new listing must climb.

100 gallon water tank

Worth a look

Shows a thin review moat (287 avg reviews), but weak search conversion (0.7%) keeps it on the watch list.

Review moat

Great287.03

avg incumbent reviews — the moat a new listing must climb

Returns

Great1.7%

return rate — above 5% kills the launch gate

Quality gap

Great4.3★

avg incumbent rating — lower means beatable quality

Competition

Good44%

top-5 click share — leaders hold, buyers still browse

Brand share

Good69%

top-5 brand share — brands hold most of the demand

Market size

Good$366K

$366K/yr · 264K searches

Growth

Okay+19.0%

90-day search growth — must beat 0% to launch

Avg price

Okay$200.49

avg listing price — sweet spot $15–$100

Price range

Bad$35.26–$694.35

cheapest to priciest tracked listing — scored on the share inside $15–$100

Conversion

Bad0.7%

search→purchase rate — share of searches ending in a sale

Signals Low Review Barrier High Price

According to Flapen's Amazon United States niche tracking, 100 gallon water tank is a $366K/yr Amazon United States market (264K searches/yr). The top 5 brands hold 69% of demand. Verdict: Worth a look — 55/100.

Data updated Jul 11, 2026 · scored weekly · How we score niches

100 gallon water tank market data

Units sold / yr: 1K–2K; avg 0–100/product
Revenue / yr: $251K–$301K; units × avg price
Conversion rate: 0.7%
Avg BSR: #854
Page quality: 0%
Prime: 58%
Sponsored: 75%
Out of stock: 14.0%
Avg brand age: 45 months
Avg seller age: 181 days

Competition & brand share

The top 5 products take 44% of clicks — established leaders, but buyers still shop beyond them.

Brands

24 flat

Sellers

Top-5 brand share

69%

Top 20: 97%

Top-5 click share

44%

Top 20: 84%

Open market

28%

classAcustoms22%
RomoTech21%
RecPro14%
Chapin International7%
GHOSOONE4%
Generic3%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — +19.0% search growth over the last 90 days.

No pronounced peak months · busiest ÷ quietest = 1.8×

Open Trend

Top 100 gallon water tank search terms

100 gallon water tank118K/yr +9.6%0.4% conv.
water tank 100 gallon43K/yr +56.8%0.3% conv.
200 gallon water tank33K/yr +51.0%0.2% conv.
100 gallon tank20K/yr -8.8%0.3% conv.
150 gallon water tank16K/yr +23.7%0.1% conv.
tanque de agua 100 galones9K/yr -23.3%0.2% conv.
100 gal water tank7K/yr +31.3%0.3% conv.
200 gallon water storage tank6K/yr -20.6%0.3% conv.
125 gallon water tank5K/yr +59.0%0.6% conv.
100 gallon water tank for car detailing4K/yr +21.9%0.0% conv.

All search terms

Top 100 gallon water tank 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.

Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 24 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

classAcustoms | T-10000 | One (1) RV Fresh Water 100 Gallon Tank Grey Water | Ribbed for Extra Support

classAcustoms$253.824.4★158 rev

RecPro RV Fresh Water Tank 100 Gallon for Drinking and Potable Water | Fresh or Gray Water Plastic Storage | Made in America

RecPro$287.823.9★80 rev

RomoTech 125 Gallon Polyethylene Storage Tank with LegsHeavy-Duty Horizontal Water Storage Tank for Farms Industrial or Chemical UseUV-Resistant Rustproof BPA-Free Plastic Liquid Tank 82123949

RomoTech$352.284.5★247 rev

RomoTech 82123929 Horizontal Square Reservoir Water Tank 100 Gallon Made in USA Natural Poly Tank For Non-Flammable Liquids UV-Resistant Ideal for Agricultural Use RV Water Storage White

RomoTech$351.324.5★885 rev

classAcustoms T4200-TO RV Fresh Water Tank Potable Water Storage Tank for Drinking Cooking Cleaning Showering for Campers Trailers Motorhomes RVs Concession (Tank Only 42 Gallon)

classAcustoms$163.694.5★24 rev

Newest

by launch date

Chapin 99162 Water Storage Tank 60-Gallon Utility Water Tank Water Supply for Farms Acreage Gardens Orchards Translucent White

Chapin International$138.22616 rev

3mo ago

classAcustoms T4200-TO RV Fresh Water Tank Potable Water Storage Tank for Drinking Cooking Cleaning Showering for Campers Trailers Motorhomes RVs Concession (Tank Only 42 Gallon)

classAcustoms$163.6924 rev

5mo ago

T5000-P RV Fresh Water Tank Potable Water Storage Tank for Drinking Cooking Cleaning Showering for Campers Trailers Motorhomes RVs Concession (Tank & 12 Volt Pump 50 Gallon)

classAcustoms$256.432 rev

5mo ago

100 Gallon Water Bladder 1000D PVC Foldable Portable Water Tank Blue Large Capacity Water Bag Container for Camping Garden Agricultural Irrigation Drought Resistance Emergency Supply

ZSLTLDU$49.3160 rev

9mo ago

VEVOR Collapsible Rain Barrel 100 Gallon Portable Rain Water Collection Barrel 1000D PVC Rainwater Collection System Garden Water Catcher Tank Storage Container with Spigot & Overflow Kit Black

VEVOR$47.06335 rev

10mo ago

What buyers say about 100 gallon water tank

What buyers praise and complain about, mined from review topics.

What buyers love

Quality-Overall16%

“Good quality”

Value For Money9%

“Worth every penny”

Size-Overall9%

“Great size”

Strength9%

“Seems solidly built”

Assembly/Installation8%

“Easy to setup”

Advertised Vs Actual Product7%

“As advertised”

Durability6%

“Very durable”

Ease Of Use4%

“Easy to use”

Material Quality4%

“the material seems durable enough for outdoor or farm use”

Water Resistance3%

“love it so much i bought another one, free water”

What buyers complain about

Leak-Proof27%

“Leaks Like A Sieve”

Size-Overall14%

“This thing is huge”

Durability9%

“broke quickly after minimal use”

Quality-Overall6%

“What I received was of very poor quality”

Assembly/Installation4%

“Takes a bit to build”

Instructions/User Manual/Troubleshooting3%

“the instructions can be a tad confusing at first”

Functionality-Overall3%

“It does not work”

Maintenance And Repair3%

“seller doesnt act to get it fix”

Design-Overall2%

“Bad design”

Ease Of Use2%

“It's nigh impossible, in fact, to get all of the water out if you are trying to empty it”

Top return reasons

Size-Overall44%

Leak-Proof15%

Defective Material/Parts7%

Advertised Vs Actual Product5%

Value For Money4%