grey water tank
Skip itWeak search conversion (0.8%) — this niche doesn't clear our bar today.
Competition
Great20%top-5 click share — an open shelf
Returns
Good2.0%return rate — above 6% kills the launch gate
Growth
Good+29.2%90-day search growth — must beat 0% to launch
Review moat
Okay1,508.83avg incumbent reviews — the moat a new listing must climb
Avg price
Okay$178.51avg listing price — sweet spot $15–$100
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Market size
Okay$132K$132K/yr · 94K searches
Brand share
Okay90%top-5 brand share — brands hold most of the demand
Price range
Bad$10.30–$578.41cheapest to priciest tracked listing — scored on the share inside $15–$100
Conversion
Bad0.8%search→purchase rate — share of searches ending in a sale
Competition
Clicks spread well past the top 5 (20% combined) — an open shelf where new products get seen.Brands
20 rising
Sellers
76
Top-5 brand share
90%
Open market
9%
- Ameri-Kart30%
- classAcustoms26%
- RecPro19%
- Camco11%
- A.A4%
- VINGLI1%
- Open — no brand owns it (14 brands, 9%)
Product shelf
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
All 90 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Camco Rhino 15-Gallon Portable RV Tote Tank - Features Large Heavy-Duty No-Flat Wheels & Low Drain Hole - Includes Removable Steel Tow Adapter 3 Sewer Hose & More RV Accessories (39000)
Camco$127.434.7★27,214 rev
Ameri-Kart 19 Gallon RV Fresh Water Tank Potable Water Storage Tank for Drinking Cooking Cleaning Showering for Campers Trailers Motorhomes RVs Cube Shape 30 x 16 x 10 (WT-5450)
Ameri-Kart$120.344.6★191 rev
Ameri-Kart 36 Gallon RV Fresh Water Tank Potable Water Storage Tank for Drinking Cooking Cleaning Showering for Campers Trailers Motorhomes RVs Cube Shape 37 x 16 x 15 (WT-5549)
Ameri-Kart$162.564.6★191 rev
Ameri-Kart 57 Gallon RV Fresh Water Tank Potable Water Storage Tank for Drinking Cooking Cleaning Showering for Campers Trailers Motorhomes RVs Cube Shape 43 x 25 x 13 (WT-5553)
Ameri-Kart$254.204.4★157 rev
Camco Rhino 21-Gallon RV Portable Waste Tank - Features Large Heavy-Duty No-Flat Wheels & Low Drain Hole - Includes Removable Steel Tow Adapter 3 Sewer Hose & More RV Accessories (39002)
Camco$162.174.7★27,214 rev
Newest
by launch date
classAcustoms T2100BPK RV Fresh Water Tank Potable Water Storage Tank for Drinking Cooking Cleaning Showering for Campers Trailers Motorhomes RVs Concession (Tank & Plumbing Kit 21 Gallon)
classAcustoms$137.925 rev
classAcustoms T2100-TO RV Fresh Water Tank Potable Water Storage Tank for Drinking Cooking Cleaning Showering for Campers Trailers Motorhomes RVs Concession (Tank Only 21 Gallon)
classAcustoms$112.7924 rev
classAcustoms T0500-P RV Fresh Water Tank Potable Water Storage Tank for Drinking Cooking Cleaning Showering for Campers Trailers Motorhomes RVs Concession (Tank & 12 Volt Pump 5 Gallon)
classAcustoms$135.672 rev
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
T2300BPK-P RV Fresh Water Tank Potable Water Storage Tank for Drinking Cooking Cleaning Showering for Campers Trailers Motorhomes RVs Concession (Tank 12v Pump & Plumbing Kit 23 Gallon)
classAcustoms$208.631 rev
Trending
90-day click momentumclassAcustoms T0500-P RV Fresh Water Tank Potable Water Storage Tank for Drinking Cooking Cleaning Showering for Campers Trailers Motorhomes RVs Concession (Tank & 12 Volt Pump 5 Gallon)
classAcustoms$135.675.0★
T2300BPK-P RV Fresh Water Tank Potable Water Storage Tank for Drinking Cooking Cleaning Showering for Campers Trailers Motorhomes RVs Concession (Tank 12v Pump & Plumbing Kit 23 Gallon)
classAcustoms$208.635.0★
Ameri-Kart 48 Gallon RV Black Water Tank Leak-Proof RV Water Storage Tank for Toilets in Campers Trailers Motorhomes and RVs End Discharge 70 x 28 x 8 (HT-1103)
Ameri-Kart$401.284.3★
T3500BPK-P RV Fresh Water Tank Potable Water Storage Tank for Drinking Cooking Cleaning Showering for Campers Trailers Motorhomes RVs Concession (Tank 12v Pump & Plumbing Kit 35 Gallon)
classAcustoms$233.645.0★
Tough Grade RV Holding Tanks | Made in USA (30 Gallons)
Tough Grade$162.814.8★
Demand & seasonality
Weekly Amazon search volume, last 64 weeks — +29.2% search growth over the last 90 days.Peak months: Jul, Aug, Sep, Oct · busiest ÷ quietest = 3.0×
Reviews
What buyers praise and complain about, mined from review topics.What buyers love
“Solid quality”
“As advertised”
“Good price”
“good tank sturdy”
“not too small either”
“Easy to use”
“Tank works great”
“Smell smells wonderful”
“Durable, easy to use”
“Heavy duty well-made”
What buyers complain about
“It leaks”
“Doesn't last”
“Very bad quality can't handle any amount of pressure with”
“small bottle”
“don't buy the cheap”
“the smell is unpleasant as is the clean up”
“Not clean, Messy, nasty”
“Bad design”
“you can't fully empty it”
“Poor construction material”