Why Is There A Sewer Smell In Our 5th Wheel Trailer?
How to get rid of the sewer smell in an RV
My husband lives full time in our 5th wheel because of his job and lately we have been having sewer smells. The camper sits for a long time without moving. Are we suppose to keep the black water tank closed and dump it every so often or can we keep it open and use the toilet and flush and the waste goes out? Give me some advice as what to do.
ANSWER: Hi Claudia, even when you are hooked up to a sewer system at an RV park you should always keep the dump valves closed on both your grey water and black water holding tanks. If you do not, the sewer smell from the RV Park’s sewer system can enter your RV.
You will also accumulate a lot of bad smelling human deposits on the bottom of your black water tank as the liquid will go directly in the sewer system and the solids will remain and cause a bad smell that will also enter the trailer.
Once the holding tanks get 1/2 to 3/4 full you need to dump them and flush the tanks. You then close the dump valves and pour about two or three gallons of water into both holding tanks, so the future waste will be diluted by the water at the bottom of the tank.
Once you have added the water to the tanks you should also pour
some Holding Tank Deodorizer and Treatment
in each tank. The amount of deodorizer you use depends on the size of your holding tanks. The instructions on the deodorizer will tell you how much to use.
Before leaving the campground always dump and flush your tanks regardless of how much waste they have and then follow the instructions I outlined above.
There could be a couple of more causes to what you are smelling in the RV.
First you may have a bad Air Admittance Valve on one of your RV's sinks. To learn more about this potential problem you should read This Could Be Causing the Bad Smell In Your RV
The other cause is actually not sewer related. The smell could be coming from your RV's House Batteries either getting overcharged and the electrolytes are boiling (battery acid) causing a rotten egg or sewer type smell. The first thing you should do is check the electrolyte level in the house batteries and top them off with distilled water. If they are full and appear to be boiling, you need to have the house battery charging system checked out by a Certified RV Technician.
I hope this helps.
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