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Old 06-17-2021, 09:52 PM   #1
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2016 25' International
Morgan Hill , California
Join Date: Mar 2013
Posts: 173
Toilet water spills?

Not as nasty as you may first think.

Flying Cloud International Serenade FB 25'

Traveling...we of course used the toilet (#1 only) with water flush. Can't remember if it was boondock tank water or shore water.
Closed up trailer for travel. Upon lunch time we stopped and went in the trailer. There was water on the floor traveling from the bottom of the toilet toward the bedroom wall and also in the opposite direction towards the kitchen wall. No doubt from just the travel movement. The water seemed clean...not from black tank.
The toilet actually moves. The top half can be tilted and a gap forms below the slide doortrap.
Did the water come out here? Is this gap/movement normal?
Or did the water actually splash all the way over the lip of the bowl?

Since we have made sure there is no residual water remaining above the slide/trap.
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Old 06-17-2021, 10:11 PM   #2
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2012 25' FB Flying Cloud
Roseville , California
Join Date: Sep 2012
Posts: 107
It may not be as it seems. I just two weeks ago had to change out our original Dometic 310 toilet due to an issue that started exactly the same way!

Beginning about 4 years after we bought our 2012 I would occasionally see the same thing, apparently clean water on the bathroom floor after towing. This problem did, however, slowly get worse over the next few years.

About a year ago I had our rig in with Vinnie for work and asked him to redo the PEX where I had installed a bidet thinking I had screwed something up. Not the case. He said my PEX work was spot on. So where is the water coming from?

During our camping trip over the Memorial Day weekend, we had a bad odor problem in the bathroom. It started on Friday as a mild odor and ended the weekend as a complete stench!

I assumed the seal at the base of the toilet had failed letting odor from the black tank into the trailer. Oh, was I wrong! I became “YouTube certified” on the odor issues with Dometic 300 series toilets. Check it out, you will NOT be happy.

What is probably happening is that the two “O” rings sealing the top ceramic portion of your toilet from the plastic base have failed allowing the water in the bowl to seep around the seal during transit (from movement). If you continue to wait, the seal gets worse and waste water will leak during flushes from the failed seal and pool in the wells inside the toilet.

You will want to change that toilet NOW!!! Do not wait until the odor arrives! I was very lucky and was able to change out the toilet without a nasty disaster inside the trailer. You may also want to spend some time on YouTube seeing how lucky you are to find the issue at the beginning.

Good luck!
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Old 06-17-2021, 11:13 PM   #3
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2020 25' Globetrotter
Santa Rosa , California
Join Date: Feb 2017
Posts: 913
Not saying this is your problem but depending on how much water is left in the bowl, it can definitely slosh out and get all over the floor while traveling. This has happened to us. I make certain that when we hit the road there is only enough water present to cover and keep the rubber seal for the flush valve wet.

“The thing about science is that it's true whether or not you believe in it.”
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Old 06-18-2021, 07:05 AM   #4
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2016 25' International
Morgan Hill , California
Join Date: Mar 2013
Posts: 173
Thank you for both suggestions. I will make sure there is no water in the bowl before travel. And when I get home I will look into the change of toilets.
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Old 06-19-2021, 09:11 AM   #5
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2012 30' International
Walkerton , Virginia
Join Date: Dec 2003
Posts: 3,015
Problem with my Dometic (in my 2012) there is no rim in the bowl to keep water from sloshing. My solution is to keep just a 1/2" or so in the bowl when travelling.

Somebody, please, point me to the road.

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Old 06-19-2021, 09:41 AM   #6
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2017 30' Classic
Carlisle , Pennsylvania
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If the water pump was on while in motion, there are other possibilities ....

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Old 06-20-2021, 06:04 PM   #7
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2016 25' International
Morgan Hill , California
Join Date: Mar 2013
Posts: 173
Originally Posted by uncle_bob View Post

If the water pump was on while in motion, there are other possibilities ....

Nope. Pump off while in transit.
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