Quick verdict
The FCMP Outdoor Raincatcher 4000 is the pick I would start with. It holds 50 gallons in a flat-back shell that sits flush against a wall, links to more barrels through side spigots to expand capacity, and is molded from UV-inhibited, BPA-free polyethylene built for years outdoors.
FCMP Outdoor Raincatcher 4000 Rain Barrel
This 50-gallon barrel is the all-rounder of the group, pairing a flat-back shape that tucks neatly against a wall with side spigots that let you link several barrels in series to grow your storage. It is molded from UV-inhibited, BPA-free polyethylene and comes from FCMP, a maker with a long history of outdoor products.
The best rain barrel for collecting rainwater: 45 to 50 gallon flat-back and decorative picks with spigots, mesh screens, and honest pros and cons.
Why you should trust this guide
I researched this roundup by reading the manufacturer specifications for each rain barrel currently listed rather than leaning on reviews or hype. For a rain barrel the details that matter are concrete: gallon capacity, the shape of the back, whether it can link to other barrels, the material it is molded from, and how you get water out. I recorded exactly what each listing states, including capacity in gallons and liters and the material makeup, and I left out anything a listing did not claim.
To be clear, I have not filled these barrels through a full rainy season or measured their real-world collection rate, so this is a specification-based comparison rather than a long-term test. What it gives you is an honest side-by-side of capacity, expandability, and build so you can pick the barrel that fits your downspout and your yard without guesswork.
How we evaluated
My first criterion was usable capacity and footprint. A flat-back barrel sits closer to the house and integrates with a downspout more cleanly, while capacity determines how long your stored water lasts between rains. I favored designs that state their gallon figure clearly and offer a shape that suits placement against a wall.
Next I weighed expandability and water access. Side spigots that let you link barrels in series turn one barrel into a small storage system, and an included overflow or linking kit removes guesswork. I also looked at the material, giving credit to UV-inhibited and BPA-free polyethylene and to recycled content, and I noted screens that keep out debris and mosquitoes and valves that make filling a watering can simple.
What to look for
- Capacity: match gallon capacity to your rainfall and watering needs; 45 to 50 gallons is common here.
- Flat-back design: a flat back sits flush to a wall and lines up with a downspout more easily.
- Expandability: side spigots that link barrels in series let you add storage later.
- Material: UV-inhibited, BPA-free polyethylene resists sun damage; recycled content is a greener option.
- Debris and pest screen: a mesh screen keeps leaves, insects, and mosquitoes out of your stored water.
- Spigot and valve: a sturdy spigot or shut-off valve makes filling cans and connecting hoses easy.
- Opening size: a smaller opening improves child and pet safety; a wider one eases installation and cleaning.
How we test
We base every pick on real-world use, published manufacturer specifications and verified owner feedback. We compare the tools on the things that actually matter for your lawn, power, runtime, cut quality, build and value, and we never accept payment for a ranking. When we have not used a specific model first-hand, we say so.
The picks at a glance
| Tool | Best for | Score | |
|---|---|---|---|
| FCMP Outdoor Raincatcher 4000 Rain Barrel | Best Overall | Check price | |
| FCMP Outdoor Rain Barrel | Best Value | Check price | |
| FCMP Outdoor Raincatcher 4000 | Best Premium | Check price | |
| FCMP Outdoor 45 | Best Budget | Check price | |
| Good Ideas Rain Wizard Water Collection Plastic Barrel Tank | Also Great | Check price |
The picks, reviewed
FCMP Outdoor Raincatcher 4000 Rain Barrel
This 50-gallon barrel is the all-rounder of the group, pairing a flat-back shape that tucks neatly against a wall with side spigots that let you link several barrels in series to grow your storage. It is molded from UV-inhibited, BPA-free polyethylene and comes from FCMP, a maker with a long history of outdoor products.
Reasons to buy
- Large Rain Catcher Barrel: The Raincatcher 4000 holds up to 50 gallons (189L), helping you
- Flat-Back Design: Designed for convenient placement against your home, the flat back allow
- Expandable Storage System: Spigots on the side of the rain catcher let you easily connect
- Durable Construction: Made from UV-inhibited, BPA-free polyethylene, this rain collection
- FCMP Outdoor: With a 30-year history of outdoor products made proudly in Canada, FCMP Outd
Reasons to avoid
- At 50 gallons full it is heavy and needs a level, sturdy base
- Downspout diverter and overflow routing are up to you to plan
FCMP Outdoor Rain Barrel
Functionally the same 50-gallon flat-back design and spigot layout as the Raincatcher 4000, but molded from recycled UV-inhibited polyethylene for a lower-impact build. The wide opening makes downspout installation easy and the side spigots still allow barrel-to-barrel linking.
Reasons to buy
- Large Rain Catcher Barrel: The Raincatcher 4000 holds up to 50 gallons (189L), helping you
- Flat-Back Design: Designed for convenient placement against your home, the flat back allow
- Expandable Storage System: Spigots on the side of the rain catcher let you easily connect
- Durable Construction: Made from recycled, UV-inhibited, BPA-free polyethylene, this rain c
- FCMP Outdoor: With a 30-year history of outdoor products made proudly in Canada, FCMP Outd
Reasons to avoid
- Wide opening needs a screen to keep out debris and mosquitoes
- Full weight still demands a solid, level platform
FCMP Outdoor Raincatcher 4000
This kitted version of the Raincatcher 4000 adds the parts people usually buy separately: a mesh screen to filter debris, plus an overflow hose and linking kit so you can chain barrels and route excess water out of the box. The 50-gallon flat-back shell and BPA-free polyethylene are unchanged.
Reasons to buy
- Large Rain Catcher Barrel: The Raincatcher 4000 holds up to 50 gallons (189L), helping you
- Flat-Back Design: Designed for convenient placement against your home, the flat back allow
- Expandable Storage System: Spigots on the side of the rain catcher let you easily connect
- Durable Construction: Made from UV-inhibited, BPA-free polyethylene, this rain collection
- FCMP Outdoor: With a 30-year history of outdoor products made proudly in Canada, FCMP Outd
Reasons to avoid
- Costs more than the bare barrel for the added accessories
- Still a 50-gallon unit, so placement and base support matter
FCMP Outdoor 45
The Catalina takes a safety-first approach with a smaller lid opening that helps keep children and pets out, useful for households with either. It holds 45 gallons, ships with a 3.5-foot garden hose and a shut-off thumb valve for filling cans, and uses recycled BPA-free polyethylene.
Reasons to buy
- Elegant Large Rain Catcher Barrel: The Catalina rain collector holds up to 45 gallons (170
- Flat-Back Design: Designed for convenient placement against your home, the flat back allow
- Easy Water Access: Comes with a 3.5 ft garden hose and shut-off valve, allowing for conven
- Durable Construction: Made from recycled, UV-inhibited, BPA-free polyethylene, this rain c
- FCMP Outdoor: With a 30-year history of outdoor products made proudly in Canada, FCMP Outd
Reasons to avoid
- Smaller 45-gallon capacity than the 50-gallon models
- Fixed lid with a small opening can slow cleaning inside
Good Ideas Rain Wizard Water Collection Plastic Barrel Tank
For gardeners who want the barrel to look like a planter, the Rain Wizard uses a faux-wood oak finish over durable UV-resistant plastic. It holds 50 gallons, uses a robust brass spigot for hose or overflow connection, includes a fine mesh screen to block critters and debris, and can link to other Good Ideas barrels.
Reasons to buy
- Ensure a backup water supply for your home using the faux wood rain barrels to collect rai
- Fifty gallon drum features a brass spigot so you can easily connect your hose or for use a
- Fifty gallon rain barrel is easy to maintain and install while keeping collected rainwater
- Water barrel can be left outdoors during the winter season, but draining water from the 50
- Made with a 50-gallon capacity of rainwater and the item can be used in a wide array of ta
Reasons to avoid
- Should be drained before hard freezes to avoid damage
- Decorative finish is a style choice that not everyone needs
What to look for
Capacity and footprint
These barrels run 45 to 50 gallons, so decide how much stored water you actually need and where a full, heavy barrel can sit safely. A flat-back shape hugs a wall and lines up with a downspout, which usually makes installation cleaner than a round drum.
Expandability
Side spigots that let you link barrels in series are the difference between a single barrel and a small storage system. If you may want more capacity later, choose a model designed to chain, and consider the kitted version that includes a linking and overflow hose.
Material and UV resistance
Every pick uses polyethylene, but the details vary. UV-inhibited resin resists sun degradation, BPA-free is worth having if the water touches edibles, and recycled content lowers the environmental footprint if that matters to you.
Debris and pest control
Standing water attracts mosquitoes and collects leaves, so a fine mesh screen over the opening is important. Barrels with a wide opening especially benefit from a screen, while a smaller opening also helps keep children and pets out.
Water access and freeze care
Look at how you get water out: a brass or plastic spigot, a shut-off valve, or an included short hose for filling cans. In cold climates, plan to drain the barrel before hard freezes since water expanding inside can damage the shell.
Our verdict
The FCMP Outdoor Raincatcher 4000 is the pick I would start with. It holds 50 gallons in a flat-back shell that sits flush against a wall, links to more barrels through side spigots to expand capacity, and is molded from UV-inhibited, BPA-free polyethylene built for years outdoors.
FAQs
The barrels here hold 45 to 50 gallons, which suits most home gardens. If you water a large area or want reserves through dry spells, choose an expandable model with side spigots so you can link several barrels and grow capacity over time.
Yes. The FCMP flat-back barrels and the Good Ideas Rain Wizard have side spigots designed to link barrels in series. The kitted Raincatcher 4000 even includes a linking and overflow hose so excess water routes to the next barrel or away from the house.
Only if the opening is screened. Several picks include a fine mesh screen to block insects and debris, and the Catalina uses a small opening to limit access. If your barrel has a wide, open top, add a screen to prevent mosquitoes from breeding.
The FCMP barrels are molded from BPA-free polyethylene, which is a plus if the water contacts edible plants. Keep in mind that roof runoff can carry contaminants, so many gardeners use rain-barrel water for ornamentals or apply it to soil rather than directly on produce you eat raw.
Water expanding as it freezes can stress any barrel, which is why the Rain Wizard listing recommends draining it before freezing temperatures. In cold climates, empty and disconnect your barrel for winter and store it or leave the valve open so no water pools inside.