Rainwater Harvesting Systems · Best Rainwater Harvesting Systems for DIY / convert my own container
10 Best Rainwater Harvesting Systems for DIY / convert my own container (2026)
We evaluated every model against our criteria. 10 earned a spot. Here's what each is best for — and when a different option wins.
✨ Searching for deals...
Top 3 at a glance
🏆
#1 PickBest Rainwater Harvesting Systems for DIY / convert my own container
100%DecisionScore
FCMP OutdoorTop 3 at a glance
1
Best OverallFCMP Outdoor
FCMP Outdoor Raincatcher 4000
Best for: garden / vegetable bed irrigation with 50–65 gallons
100% match
Check today’s price →Why this pick
Downspout diverter kits drill a small hole and install in minutes—no cutting required. The FCMP Outdoor Outdoor Raincatcher leads because it delivers garden / vegetable bed irrigation with 50–65 gallons — exactly what this ranking prioritizes. Gold-standard Raincatcher 4000 with flat-back design, aluminum mesh screen, linking kit, and overflow protection.
2
Runner-UpRTS Home Accents
RTS Home Accents 50-Gallon
Best for: garden / vegetable bed irrigation with 50–65 gallons
100% match
Check today’s price →Why this pick
The RTS Home Accents Home Accents offers garden / vegetable bed irrigation with 50–65 gallons. RTS 50-gallon barrel with stand included.
3
Also GreatRTS Home Accents
RTS Home Accents Polyethylene 50 Gallon Flat Back Dual Brass Spigot Rain Barrel, Woodgrain with Black Stripes Color
Best for: garden / vegetable bed irrigation with 50–65 gallons
100% match
Check today’s price →Why this pick
The RTS Home Accents Home Accents offers garden / vegetable bed irrigation with 50–65 gallons. 50-gallon flat-back rain barrel with premium brass spigot and wood-grain finish.
4
#4 PickAquabarrel - EarthMinded
Aquabarrel - EarthMinded Rain Water Diverter DIY Kit for Round Downspouts
Best for: garden / vegetable bed irrigation with under 50 gallons
75% match
Check today’s price →Why this pick
The Aquabarrel - EarthMinded - EarthMinded differentiates with under 50 gallons (a 1,000 sq ft roof collects ~620 gallons per inch of rain. a 50-gallon barrel suits small gardens). Aquabarrel DIY diverter kit for round downspouts.
5
#5 PickAquabarrel
EarthMinded for 2x3
Best for: garden / vegetable bed irrigation with 50–65 gallons
75% match
Check today’s price →Why this pick
The Aquabarrel - Aquabarrel differentiates with diverter kit (diverter kits avoid permanently modifying your downspout. top-fill barrels go directly under the downspout). FlexiFit universal diverter for 2x3 and 3x4 downspouts.
6
#6 PickAquabarrel
EarthMinded - Aquabarrel DIY, FlexiFit RainBarrel Diverter Kit for 3 and 4 inch Round Downspouts - Connects Your Rain Barrel to The Downspout
Best for: garden / vegetable bed irrigation with under 50 gallons
75% match
Check today’s price →Why this pick
The Aquabarrel - Aquabarrel differentiates with under 50 gallons (a 1,000 sq ft roof collects ~620 gallons per inch of rain. a 50-gallon barrel suits small gardens). EarthMinded diverter kit for 3x4 downspouts.
7
#7 PickFCMP Outdoor
FCMP Outdoor Raincatcher 4000
Best for: garden / vegetable bed irrigation with 50–65 gallons
75% match
Check today’s price →Why this pick
The FCMP Outdoor Outdoor Raincatcher differentiates with not important – utility and value first (some barrels mimic wood-grain or terracotta pottery; others are plain functional containers). FCMP Raincatcher 4000 in black, recycled polyethylene construction, linking kit included, child-safe spoke-wheel top, overflow protection..
8
#8 PickGood Ideas
Good Ideas
Best for: garden / vegetable bed irrigation with 50–65 gallons
75% match
Check today’s price →Why this pick
The Good Ideas Ideas Rain differentiates with very important – must look attractive in yard (some barrels mimic wood-grain or terracotta pottery; others are plain functional containers). Good Ideas Rain Wizard 50 – most popular 50-gallon barrel in the US.
9
#9 PickRTS Home Accents
RTS Premium 55-Gallon
Best for: garden / vegetable bed irrigation with 50–65 gallons
75% match
Check today’s price →Why this pick
The RTS Home Accents Home Accents differentiates with not important – utility and value first (some barrels mimic wood-grain or terracotta pottery; others are plain functional containers). 50-gallon ECO rain barrel made from 100% recycled plastic.
10
#10 PickAquabarrel
EarthMinded for 2x3
Best for: garden / vegetable bed irrigation with under 50 gallons
50% match
Check today’s price →Why this pick
The Aquabarrel DIY Rain differentiates with under 50 gallons (a 1,000 sq ft roof collects ~620 gallons per inch of rain. a 50-gallon barrel suits small gardens). EarthMinded diverter-only part for 2x3, 3x4, and round downspouts.
Not sure this is your top priority?
Take our 60-second quiz and we'll rank all rainwater harvesting systems based on YOUR specific needs.
Take the full quizMore rainwater harvesting systems roundups
Best Rainwater Harvesting Systems for 100+ gallonsBest Rainwater Harvesting Systems for 50–65 gallonsBest Rainwater Harvesting Systems for 65–100 gallonsBest Rainwater Harvesting Systems for BudgetBest Rainwater Harvesting Systems for Complete systemBest Rainwater Harvesting Systems for Diverter kit
As an Amazon Associate, Decision Widget earns from qualifying purchases. Product prices and availability are subject to change.