RV Sewer Hose Setup: A No-Grossness Guide

Let me just say it: dealing with the RV sewer hose is the one part of camping that nobody puts on their Instagram story. But it is a fundamental skill, and once you have done it a few times, it becomes about as eventful as taking out the trash. The key is knowing the right steps, having the right gear, and understanding what order to do things in.

If you have been avoiding full hookup campgrounds because the sewer connection intimidates you, this guide will walk you through it with zero judgment and zero unnecessary grossness.

What You Need

Before your first dump, make sure you have this gear ready:

• Sewer hose (15 to 20 feet): A quality sewer hose makes all the difference. The cheap ones that come with many used RVs crack and leak. Invest in a good one with solid fittings.
• Sewer hose support: A plastic cradle that keeps the hose on a slight downhill angle from your RV to the sewer inlet. Gravity does the work.
• 90-degree elbow adapter: Connects your hose to the campground sewer inlet and seals it in place. Some campgrounds require a tight seal.
• Disposable gloves: Non-negotiable. Keep a box in your outside storage bay.
• Clear elbow connector (optional but recommended): A transparent fitting between your sewer outlet and the hose lets you see when the water runs clear during flushing. Yes, it sounds unpleasant, but it tells you when your tanks are truly empty.

Step-by-Step Setup

Step 1: Put On Gloves

Always. Even if you think nothing will spill. Gloves on before you touch anything sewer-related.

Step 2: Connect the Hose to Your RV

Attach one end of the sewer hose to the sewer outlet on your RV (usually on the driver's side, low on the frame). It twists on and should lock securely. Make sure both the black tank and gray tank valves are closed before you connect.

Step 3: Run the Hose to the Sewer Inlet

Extend the hose to the campground's sewer inlet in the ground. Place it on the sewer hose support so it slopes slightly downhill the entire way. No dips, no flat sections, no uphill stretches. Gravity needs a clear path.

Step 4: Connect to the Sewer Inlet

Attach the 90-degree elbow adapter to the campground sewer opening and connect your hose. Make sure the fit is snug. Some campgrounds want you to place a weight or seal over the connection.

Step 5: Dump the Black Tank First

Open the black tank valve (the larger of the two pull handles). Let it drain completely. This takes a few minutes depending on how full the tank is. Do not rush it.

Step 6: Close Black Tank, Open Gray Tank

Once the black tank is empty, close its valve. Then open the gray tank valve. The soapy gray water rinses the hose. If your RV has a built-in black tank flush, run it now while the gray water is flowing to rinse the black tank interior.

Step 7: Close Everything and Disconnect

Close the gray tank valve. Disconnect the hose from the sewer inlet first, then from your RV. Let any remaining water drain out. Rinse the hose with fresh water if a rinse connection is available. Collapse the hose, cap both ends, and store it.

Step 8: Clean Up

Remove gloves, wash hands thoroughly, and sanitize anything you touched. Store all sewer gear in a dedicated outside compartment, never inside the RV.

Common Mistakes to Avoid

• Leaving the black tank valve open permanently. This is the most common beginner mistake. When the valve stays open at a full hookup site, liquids drain continuously but solids build up and create a "pyramid plug" that is extremely difficult to clear. Keep the valve closed and only open it when the tank is at least two-thirds full.
• Dumping gray water first.
• Using a kinked or unsupported hose. A sagging hose does not drain properly and can leave waste sitting in the low point. Use a support.
• Forgetting to cap the hose ends. Uncapped hoses in storage drip residual liquid and attract insects. Cap both ends after every use.