We were three months into full-time RVing when we pulled into a rest area dump station outside Amarillo at sunset. We had watched a YouTube video the night before, bought a basic sewer hose kit at Walmart that morning, and figured we had this whole thing sorted out. We backed up to the concrete pad, unrolled the hose, shoved one end into the ground fitting, twisted the other end onto our black tank valve, and pulled the handle. The hose was not actually locked onto the valve fitting. A stream of black tank liquid gushed out of the connection all over the concrete and our bare feet in sandals. We stood there in shock for about three seconds before one of us screamed and lunged for the valve handle to shut it off. That was the moment we became very serious students of the RV dump station, and we’ve been teaching ourselves the right way to do this ever since.
Step 1: Get the Hose Connection Right Before You Touch That Valve
The twist-lock fittings on sewer hoses feel secure when they are not. We learned this in the worst possible way.
Before you even think about opening a tank valve, get down on your hands and knees and look at the connection between your sewer hose and your RV’s dump valve. The fitting should be twisted all the way onto the threads until it stops, then given one more firm twist to make sure it is seated. We now tug on the hose after connecting it. If it slides off with light pressure, it was never really attached. After our Amarillo disaster, we added a 90-degree sewer attachment between the RV valve and the hose. The clear section lets us see exactly what is waiting in the pipe before we open anything, which has saved us from at least two more spills when we forgot to close a valve after the last dump.
The other end of the hose goes into the dump station’s ground fitting. Most stations have a four-inch opening in the concrete with a metal grate or cap. Pull the cap off, set it aside where you will not trip over it, and push your hose end into the opening as far as it will go. The initial rush of waste water when you open your black tank valve is strong enough to blow a loosely placed hose right out of the ground fitting. We have seen this happen twice at busy RV dump station locations, and both times the RVer had to chase their hose across the concrete while black water sprayed everywhere. Find a rock or a brick and wedge it against the hose elbow to hold it in place. Most dump stations have a rock sitting nearby for exactly this purpose.
Step 2: Dump Black First, But Start With a Gray Water Trick
Everyone says dump your black tank first, then your gray tank. That is correct, but incomplete.
We dump a few seconds of gray water first to coat the inside of the sewer hose. Then we close the gray valve, open the black valve, and let the black tank drain completely. This takes anywhere from two to five minutes depending on how full the tank is. You will hear the flow slow down and eventually stop. When it does, close the black valve and open the gray valve all the way. The gray water rinses out the RV’s waste pipes and flushes the sewer hose clean, which matters a lot if the dump station’s rinse water is turned off or nonexistent.
We used to skip the initial gray water coat and dump black then gray. The problem is that waste solids stick to a dry hose, and even a full gray tank does not always rinse them loose. The brief gray water coat at the beginning makes everything flow smoother and leaves the hose cleaner at the end. We picked up this trick from an RVer at a Quartzsite RV dump station who had been full-timing for a decade, and it has made a noticeable difference.
One more thing: if you have a tank flush system, use it at home or at a full-hookup campsite, not at a public dump station. Flushing can take twenty minutes or more, and if there are people waiting behind you, that is twenty minutes of building resentment. We have been the people waiting, and we have also been the people flushing while others waited. Neither feels good.
Step 3: Lift the Hose to Rinse the Termination Assembly
This step is invisible to most beginners, and we had been RVing for over a year before someone showed it to us.
After your black tank is empty and your gray tank is draining, lift the middle of the sewer hose higher than your dump valves while the gray water is still flowing. This forces gray water backward against the closed black tank valve, flooding the interior of the termination assembly and rinsing out any solids that are stuck in there. Hold the hose up for ten or fifteen seconds, then lower it and let the gray water flush everything down into the ground. This trick has kept our termination assembly clean and odor-free for years. Without it, waste builds up inside the valve housing and starts to smell, and eventually you have to take the whole thing apart and scrub it out with a brush. We did that once. Never again.
Step 4: Know When to Pull Forward and Let the Next Person In
Dump stations are one of the few places in RVing where etiquette is not optional. If you mess this up, people will remember you, and not in a good way.
The entire dump process takes us about five minutes when we are dumping tanks and stowing the hose. If we are also filling our freshwater tank, it takes another ten to fifteen minutes depending on the water pressure. The problem is that most dump stations only have one or two dump lines, and if you are sitting there filling water while your rig blocks the dump inlet, everyone behind you is stuck waiting. We have been stuck behind someone who took an hour at a dump station in Moab, and we have also been the people who accidentally blocked the line while filling water. Both situations are avoidable.
As soon as your tanks are empty and your hose is disconnected, pull forward far enough that the next RVer can access the dump inlet. Then fill your freshwater tank from the potable water spigot, which is usually located a few feet ahead of the dump area. If the water spigot is too close to the dump inlet and pulling forward does not clear enough space, have one person handle the water fill while the other moves the rig completely out of the way. This is basic courtesy, and it keeps the line moving.
We also make it a point to never use the sewer rinse hose to fill our freshwater tank. Some dump stations have a hose attached to a spigot near the dump inlet for rinsing hoses and concrete. That hose is not potable water, and even if the spigot says it is, we do not trust it. We have seen people rinse their sewer hoses and then spray down their shoes with the same hose. That water is not going into our freshwater tank.
Finding RV Dump Station Options When You Need One
We use the Allstays Camp & RV app, and we have used it since 2019. It cost us ten dollars once, and it has paid for itself a hundred times over. The app shows dump stations on a map, lists whether they are free or paid, and includes user comments about hours, cleanliness, and whether the station is still operational. We have pulled into three different dump stations that Google Maps said existed but were actually closed or paved over. Allstays has never sent us to a ghost station.
The app also shows rest areas, and many rest areas in the western states have free dump stations. We have used rest area dumps in Utah, Nevada, and Arizona without paying a dime. The trade-off is that rest area dumps are often busy, sometimes poorly maintained, and occasionally sloped in the wrong direction, which makes it hard to get your tanks to drain completely. We have had to use leveling blocks at two different rest area dumps to tilt the rig enough to get the last few gallons out of the black tank.
State parks are another reliable option. Most state parks in Utah, including Dead Horse Point State Park near Moab, have dump stations with posted hours. The stations are usually cleaner than rest areas, and the cost is either included in your camping fee or available for a small dump-only fee if you are not staying overnight. We have never had a bad experience at a state park dump station. We’ve written more about finding great boondocking spots and amenities that can make your travels easier.
Free Dump Stations Are Not Always Free
We once drove fifteen miles out of our way to use a “free” dump station that an app said was open twenty-four hours. When we got there, the station was surrounded by a chain-link fence with a padlock, and a sign said it was only open Monday through Friday from eight in the morning to six in the evening. It was Saturday. We drove another twenty miles to a truck stop and paid fifteen dollars to dump. The twenty dollars we spent on fuel driving around looking for a free option would have paid for the truck stop dump twice over.
Free dump stations are great when they are actually free, actually open, and actually maintained. But a lot of free stations are none of those things. We have pulled into free dumps that were so filthy we turned around and left, and we have arrived at free dumps that had a line of eight rigs waiting because there was only one dump inlet and no time limit. At a paid RV dump station, you are almost always in and out in under fifteen minutes, the concrete is usually cleaner, and there is often an attendant nearby if something goes wrong.
We now budget ten to twenty dollars per dump when we are traveling, and we treat free dump stations as a bonus rather than a plan. If we find a clean, open, uncrowded free station, we use it. If not, we pay the fifteen dollars and move on with our day. Our time and our sanity are worth more than the cost of a dump.
The Gear That Keeps Us Out of Trouble
We carry two ten-foot sewer hoses, and we have used both of them at the same time exactly once. Most dump stations are close enough that one hose is plenty, but there was a poorly designed station in New Mexico where the dump inlet was a full fifteen feet from where we had to park. We connected both hoses, and it worked, barely. Since then we have kept both hoses in the rig.
The other piece of gear that has saved us more times than we can count is a pair of disposable nitrile gloves. We keep a box of them in the storage bay next to the sewer hose, and we put on a fresh pair every time we dump. Gloves do not protect your hands from touching something foul. They also give you the confidence to handle the hose and the fittings without hesitation, which makes the whole process faster and less stressful. When we are done, we peel the gloves off, drop them in a plastic bag, and throw the bag away at the next trash can. We do not leave used gloves at the dump station, and neither should you.
Everything else is optional. We do not carry a separate rinse hose, we do not use tank treatments, and we do not own a macerator pump. The basic hose, the clear elbow adapter, and the gloves are all we need to dump our tanks at any station in the country.
Your First RV Dump Station Visit Is Going to Happen Soon
Before you leave on your next trip, buy a sewer hose kit and a box of disposable gloves. You can find both at Walmart or any RV supply store. Practice connecting the hose to your RV’s dump valve in your driveway before you get to an RV dump station with people waiting behind you. Make sure the twist-lock fitting actually locks.
When you get to your first dump station, take your time. Read any posted instructions. Look at how the station is laid out. If someone else is dumping when you arrive, watch what they do. And wear closed-toe shoes. We will never make that mistake again, and neither should you.
