Dumping waste tanks

The friendliest place on the web for anyone with an RV or an interest in RVing!
If you have answers, please help by responding to the unanswered posts.

Tiercel

Well-known member
Joined
Jul 20, 2021
Posts
442
Location
Pennsylvania
I need to winterize this week. I have never dumped waste tanks and it’s is the thing where you don’t want an oops! My tanks mostly have Borax and Dawn water in them that has been there for months. I intend to top them almost full. I know to dump the black tank first. And to be sure to close valves. I have disposable rubber gloves.

This is my question. I have a state park 12 miles away that charges $10 BUT their water is off to prevent freezing of their exposed section of water line. Can I just take a 5 gal jug of disinfectant water and bucket to rinse the hose or should I drive almost twice that far and pay double to a dump station with water?
 
As RRR said... The grey water is typically mostly soapy water and no additional disinfecting is needed. For storage, if you don't have caps for the hose ends, just hook the two ends together unless you're stowing it in a rear pumper or tube.
 
You're going to be so disappointed once you're done, after all this anxiety buildup. You can certainly dump some rinse water down the poop noodle if you like, or not. My standard protocol after dumping is to disconnect the RV end, hold it vertical to dribble for a number of seconds then retrieve the sewer end and couple the hose ends together. Easier to seal it that way than to use caps, though I keep a few on hand. Then the hose is stowed in it's tote and stays that way until the next time I use it.

Mark B.
Albuquerque, NM
 
The only thing I would do differently is I would winterize first then dump the tanks. The reason is that while you’re winterizing, water from the system will get into your tanks and you’ll want to get rid of that. If you use the pink stuff, when you get back from dumping, you could put a little pink stuff in each tank and traps.
 
So, no human waste in your tank, just borax and soap? Your plants will love the soap, not sure about borax.
Be sure to hold tightly to the sewage hose, it gets away from first-timers and they end up wrestling the snake and covered with brown slush. Open the valve slowly.
5 gal should rinse the hose enough to get home and hose off in the yard with no contamination to worry about, or the 5 gal might be plenty to finish it and store it.
 
Thanks for the responses. I felt the same about the grey tank largely rinsing the drain hose. I just wanted to make sure I was not missing something. My drain hose stores in the bumper with magnetic caps on each end. If I drain tanks before I winterize I will put a container under faucets to catch any water I blow out.
 
Last edited:
Part of the process is to dump some RV antifreeze down the drains so water in the traps doesn't freeze. So this water and a bit of antifreeze ends up in the tanks, but I wouldn't consider this to be a freeze hazard. The only other thing I do is put a couple glugs of olive oil in the toilet and leave it sit. Serves as both a gasket and seal protectant.

Mark B.
Albuquerque, NM
 
Actually the olive oil is primarily intended to keep water in the toilet and traps from evaporating but it likely serves the other purposes as well.

Ernie
 
Waiting in line at a dump station is not among the things I consider to be quality time but during one such interlude the folks ahead of me provided a better than average entertainment value. Not sure if this was their first or 500th dump but the couple both had on those yellow kitchen latex gloves on that go halfway up to your elbows. Every movement the guy made the lady was folowing around with a spray bottle with what can be assumed disinfectant, sprItzing the hose, the drain, and anything that was brought out or put away. I wish I had the presence of mind to video them, I've seen my share of folks that putz around at the dump station but these folks went the extra mile. The only thing missing was hazmat suits.

Mark B.
Albuquerque, NM
 
Yeh! That wasn’t very reassuring right before my first dump. Do you think it will mark me as a newbie if I wear a yellow raincoat with a hood? Maybe some goggles for good measure?
On a serious note, when you twist click the hose to the tank, simply make sure it snaps into place. All this is done before you pull the lever. Then make sure the hose is about a 1 foot down the hole the waste goes in, after that, 99% guarantee you it will be easy breezy. That said, I personally like to give my tanks a pretty good rinsing on the last trip. Personally I'd drive the extra 15 minutes for water to rinse the tank. I'm assuming here that you have a rinse out connection? Also, take a spare hose, Don't use your white drinking hose, and take a couple pair of channel lock plyers, Sometimes they screw on wonky fittings that do not play nicely with hose connections that you might need to temporarily remove to connect to the flush out on your trailer. (you didn't hear that from me ;))
 
I learned the hard way many years ago that after hooking up the waste hose, it's worth popping the grey valve open momentarily to make sure everything is solid with no leaks before opening the black valve. If there is a problem, any spillage is an easy rinse down since it's mostly soapy water anyway. The rest of the grey is saved for the rinse after the black dump of course.
 
I also learned the hard way that if your waste hose twists on like mine does, that you feel to make sure all four of the little latches (or whatever they are) are fully connected to the coupling. If only two or three are attached, the poop will come out of the side and for people like me who have a sewage compartment that surrounds the connections, it will really make a mess there.

In fact, it was only a couple of months ago that I took advantage of a full hookup site to thoroughly spray disinfectant in my compartment, use a scrub brush, and rinse it out with lots of water.
 
Well, I have officially earned my green belt in RVing. Maybe a better designation for this accomplishment would be the "Brown Belt." I traveled 185 miles from home, went two nights without hookups, and made one official dump (not to mention four months of repairs and renovations). I found a dump station 10 miles from me with RVParky. It was only $10. I was looking for some sort of impressive station as I approached the RV park but I missed it. I paid at the camp office, and they asked if I saw the dump station when I came in. When I said no, they pointed it out. As everyone but me would have known, it was a faucet with a sign that said don't drink from the hose. I didn't! There was a metal cap flush with the ground on a small concrete pad. That was it. There was no one ahead of me and fortunately no one behind me. I had my gloves, paper towels, and a 2 gal jug of hot disinfectant water right inside the rear cargo bay next to the dump valves. That way, I could grab stuff fast and look like I knew what I was doing.

I jumped from the cab. With a confident stride, I went straight to the cargo door, decisively threw it up, grabbed my gloves, and pulled the noodle out of the bumper. I pulled it out before but only a foot or two to put a clear section on it. I was expecting it to be about 8' long. Instead, it was more like 4 feet. I bent over and looked in the bumper to see if it broke in half. I knew I was beginning to look stupid so I decided to go with what I had. I was not going to try stretching it, only to have it pop off of the valve halfway through the dump, so I laid the drain noodle on the pad and jockeyed the MH closer to the pad.

I jumped out again and glanced around to make sure I was not being observed. I started to remove the cap to my drain. Immediately I was met with cloudy water and bits of stuff. I shoved the cap back on. I pushed on the valves. I was beginning to doubt my book learning. Did pushed in mean closed or open? I wondered, what if I remove the cap and get a full-blown dump before I can attach the hose. Then I slapped myself in the face (with my clean hand), "man-up and pull that cover!" When I did, one or two cups of brown water with tiny bits of toilet paper and possible crap hit the dirt. I quickly connected the hose and was about to pull the valve and I remembered a post that warned to secure the other end. I was close enough that I could hold it with one hand as I pulled the valve. Immediately the magic happened. Since I filled my tanks TOTALLY full there was a powerful rush of tea-colored water. Then I pulled the grey water valve. The deed was done. Since their hose was not even connected to the faucet I just grabbed the handle of my 2 gallons of hot Pinesol water. I rinsed the outside and inside with a few sweeps of my arm.

I still had the incriminating cup or two of debris on the dirt under my drain. Should I call the environmental police and turn myself in or flee? was I supposed to have a poop bag?, a shovel?, a bucket? No one on the forum ever advised me on this predicament. I quickly decided to pour the remaining gallon of Pinesol water on it. It dispersed so the only real evidence was a wet spot in the dirt. I fled the scene wondering if I would be tackled the next time I show up at the office to use their dump station. I watched my rearview mirror until I was certain I was not being followed and I finally returned safely to my house. I am ordering some camo netting to throw over the RV in case I was photographed.
 
Last edited:
Congratulations!! The important thing is not to have an audience, or witnesses, as they are sometimes called in court. You achieved your goal with minimal problems, which gets you an A-. I have learned to try to visit the dump station at off times when I am staying in a campground, like after most people leave and before the new campers arrive.
 
A couple follow up questions. How common is it that there would be tank contents that leaked behind the cap. I did have fluid in the tanks for months trying to make sure they would be properly cleaned out when I dumped.

Also what is the best thing I can do in that situation?

I would think most sites would have a trash can to throw disposable gloves in. If not will be prepared for that next time. I am not a total germaphobe but I don’t want contaminated gloves laid down in a bay I lay a water hose or luggage in.
 
You may have dried out seals on one or both of your waste tank valves. When the temperatures permit, add several gallons of water to just one of the tanks and see if it shows up behind the cap after a few days. If the first valve seems to be sealing, try the other tank. If neither tank seems to be leaking paste its valve, possibly a valve was previously opened with the cap in place. There are sewer outlet caps available with a small garden hose threaded opening that can be used to check for any liquid before opening the larger cap. There also are clear caps available for the same purpose.


 

Latest posts

Forum statistics

Threads
131,973
Posts
1,388,466
Members
137,722
Latest member
RoyL57
Back
Top Bottom