Water & Waste
The Best RV Sewer Hose Support
The sag is what smells, not the hose. This is the cheapest fix for the most common complaint in this section.
By Mike M. ·
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Quick picks
Same sewer rubric, applied to supports. Storage is weighted heavily because the support you will actually carry is the one that works.
| # | Product | Best for | Score | Price |
|---|---|---|---|---|
| 1 |  Camco Sidewinder Telescoping RV Sewer Hose Support, 20 ft A rigid folding trough that holds the hose in a steady slope. Without one, the hose sags, the sag holds waste, and the smell you blame on the hose is actually the sag. Top pick | Giving the hose a continuous downhill run | 6.9/ 10 | |
| 2 |  Valterra Slunky RV Drainage Hose Support, 20 ft, S2000 A coiled spring support that compresses to a fraction of a rigid trough's length. It gives a less precise slope, and it fits in a cabinet, which for most people is the better trade. Stores smallest | Hose support that collapses to almost nothing | 7.2/ 10 | |
| 3 |  Camco RhinoFLEX 20 ft Complete RV Sewer Hose Kit The default sewer hose for a reason: a reinforced 23-mil wall that holds its shape, swivel fittings on both ends, and a complete kit so you are not ordering an adapter from the dump station. | A first sewer hose that will not need replacing in a season | 8.0/ 10 | $63.00View on Amazon
|
| 4 |  Camco RhinoFLEX Clear Sewer Hose Elbow with 4-in-1 Adapter A clear 90-degree elbow with a stepped 4-in-1 adapter, which is the part that makes a sewer hose fit a strange dump connection. Keep a spare. | The adapter that fits whatever the dump station has | 8.6/ 10 | $15.99View on Amazon
|
Tap any row to jump to the full write-up. Prices come from Amazon and are read automatically — see each product below for the date.
The short answer
Here is the problem a support solves. Your trailer’s waste outlet is maybe 18 in off the ground. The sewer connection is at ground level, ten or fifteen feet away. Lay a flexible hose between the two and it does not form a nice slope — it dips in the middle, sits on the ground, and the low point holds waste.
That trapped waste is where the smell comes from, and it is also why tank sensors read dirty and why hoses degrade from the inside. A support holds the hose in a continuous descending line so nothing stays in it.
Rigid folding troughs
A plastic trough, hinged in segments, that folds concertina-style and telescopes. You extend it to the length you need, set the slope with the height-adjustable legs or by propping the trailer end, and lay the hose in it.
Good at: slope consistency. You set it and it stays. Rigid means the hose cannot sag between supports, and the slope holds for the whole stay.
Bad at: storage. Even folded, a 20 ft trough is a long object, and on a smaller trailer it eats an entire pass-through compartment. The hinges are also the long-term failure point — they are the part that eventually cracks.
Coiled spring supports
A heavy helical plastic coil that stretches out to length and compresses down to a couple of feet.
Good at: storage, by a wide margin. It compresses small enough to live in a cabinet, and it is light. It also flexes round an awkward site layout where a rigid trough would need to go in a straight line.
Bad at: precision. The coil holds the hose off the ground but the slope is less controlled, and on uneven ground the coil can tip. It also collects dirt in the coils, which you then handle.
Buy a rigid trough if…
- You have a large pass-through and the storage does not hurt
- You stay at sites for several days at a time
- You want to set the slope once and forget it
- You camp on uneven ground where a coil would tip
Buy a coiled support if…
- Storage space is the binding constraint
- You move every night or two
- Your sites are usually reasonably flat
- You want something light enough to carry one-handed
How much slope you need
Not much, and it needs to be continuous. The usual guidance is a consistent downhill fall from the trailer to the connection with no level or rising sections. Think of it like household drainage: a steady gentle fall moves everything; a flat section with a dip in it collects solids.
In practice that means supporting the hose for essentially its whole deployed length, which is why the supports are sold at the same lengths as the hoses.
The common mistake
The improvised options, honestly assessed
A plank or a length of gutter. Works. A plastic rain gutter offcut is genuinely a reasonable support, it is cheap, and it stores flat-ish. The catch is that it does not fold and you have to cut it to a length you commit to.
A pool noodle. Also works, surprisingly well, and stores by compressing into any gap. It degrades in sun over a season or two and it is not rigid enough to hold a slope under a full hose, but it is better than nothing.
Stacking blocks and bricks under the hose. Point supports rather than continuous support, so the hose sags between them. Better than a hose on the ground, worse than a trough.
If you already have leveling blocks, using two or three of them to prop the trailer end of the hose higher is a free improvement to whatever support you have.
The verdict
Buy the rigid folding trough if you have somewhere to put it — it is the better support and the slope consistency is real. Buy the coil if storage is tight, which in a smaller trailer it usually is, and accept a slightly less tidy slope. Either is a large improvement on a hose lying on the ground.
The picks in full
Camco Sidewinder Telescoping RV Sewer Hose Support, 20 ft
Camco · Best for giving the hose a continuous downhill run
A rigid folding trough that holds the hose in a steady slope. Without one, the hose sags, the sag holds waste, and the smell you blame on the hose is actually the sag.
Key specifications
- Length
- 20 ft
- Type
- Telescoping, folding
- Material
- Rigid plastic
- Part
- 43052
Capacity figures read from Camco Sidewinder specifications, October 2026.
How it scored
- Crush resistance (30%)8
- Fittings (25%)6
- Storage (20%)5
- Build quality (15%)8
- Price for capability (10%)8
Weighted average of the figures above. We did not test this product — see how we pick.
What it does well
- Rigid, so the slope stays where you set it
- Folds and telescopes for storage
- Keeps the hose off gravel, which is what kills hoses
What it is bad at
- Bulky even folded
- The folding hinges are the failure point over time
- Takes up the whole length of a pass-through
Price as of October 5, 2026. #ad How this is funded
Valterra Slunky RV Drainage Hose Support, 20 ft, S2000
Valterra · Best for hose support that collapses to almost nothing
A coiled spring support that compresses to a fraction of a rigid trough's length. It gives a less precise slope, and it fits in a cabinet, which for most people is the better trade.
Key specifications
- Length
- 20 ft extended
- Type
- Coiled spring support
- Storage
- Compresses to about 2 ft
- Color
- Black
How it scored
- Crush resistance (30%)6
- Fittings (25%)6
- Storage (20%)10
- Build quality (15%)7
- Price for capability (10%)8
Weighted average of the figures above. We did not test this product — see how we pick.
What it does well
- Collapses small enough to store anywhere
- Light
- Flexes around an awkward site layout
What it is bad at
- Slope is less consistent than a rigid trough
- The coil can tip on uneven ground
- Picks up dirt in the coils
Price as of October 5, 2026. #ad How this is funded
Camco RhinoFLEX 20 ft Complete RV Sewer Hose Kit
Camco · Best for a first sewer hose that will not need replacing in a season
The default sewer hose for a reason: a reinforced 23-mil wall that holds its shape, swivel fittings on both ends, and a complete kit so you are not ordering an adapter from the dump station.
Key specifications
- Length
- 20 ft (two 10 ft hoses)
- Fittings
- Bayonet and 4-in-1 adapter included
- Caps
- Translucent elbow in the kit
- Origin
- Made in USA
Capacity figures read from Camco RhinoFLEX specifications, October 2026.
How it scored
- Crush resistance (30%)8
- Fittings (25%)9
- Storage (20%)6
- Build quality (15%)8
- Price for capability (10%)9
Weighted average of the figures above. We did not test this product — see how we pick.
What it does well
- Holds its shape instead of collapsing in a sag
- Complete kit — nothing else to buy on day one
- Fittings are the industry standard, so parts are everywhere
What it is bad at
- Twenty feet is bulkier to store than most bumper tubes allow
- The accordion wall traps residue and needs rinsing properly
- Not the thickest-walled hose Camco makes
Camco RhinoFLEX Clear Sewer Hose Elbow with 4-in-1 Adapter
Camco · Best for the adapter that fits whatever the dump station has
A clear 90-degree elbow with a stepped 4-in-1 adapter, which is the part that makes a sewer hose fit a strange dump connection. Keep a spare.
Key specifications
- Type
- 90-degree clear elbow
- Adapter
- 4-in-1 stepped, fits 3 in and 3-1/2 in to 4 in
- Connection
- Bayonet
- Origin
- Made in USA
Capacity figures read from Camco sewer fitting specifications, October 2026.
How it scored
- How often you use it (40%)9
- Build quality (25%)7
- Takes up little room (20%)9
- Price for capability (15%)10
Weighted average of the figures above. We did not test this product — see how we pick.
What it does well
- Fits essentially every sewer connection you will meet
- Clear body shows when a rinse is done
- Cheap enough to carry two
What it is bad at
- Clear plastic stains quickly
- The stepped adapter cracks if you force it into a tight connection
- Threads are coarse and strip if cross-threaded
Common questions
Yes. Without support the hose sags, waste collects in the low point and stays there. A support holds a continuous downhill line.
A consistent gentle fall from trailer to connection with no level or rising sections. Consistency matters more than the amount.
It works, and it beats a hose on the ground. It is not rigid enough to hold a slope under a full hose, and it degrades in sun over a season or two.
Sources
- Camco published water and waste product specifications — read October 2026
- RV Industry Association — standards and compliance program — read October 2026