How To Dump & Clean an RV Black Tank

We demonstrate how to dump RV waste water holding tanks and thoroughly clean the black tank. Keeping your sewage tank super clean requires following a few simple procedures which will make it stay odor-free.

To view our “express” version of this procedure watch:

RV Holding Tank Dumping 1-2-3

Lots of RVers think their black tank is clean when they just empty it and flush out the sewer hose with water from the grey tank.

Even those RVers who use a black tank flush system often don’t utilize the most important piece of equipment necessary to monitor the cleanliness of the black tank: a clear sewer elbow.

And even using a clear sewer elbow on your camper isn’t enough. As we demonstrate, using a black tank flush connection, and plenty of water STILL won’t do the job. Using the proper technique is essential for maintaining the black tank and keeping it clean and odor-free.

We go through the step-by-step instructions for making sure that your RV holding tanks stay clean and fresh, making your motorhome, travel trailer or fifth wheel a nicer place to be.

We’ll also cover a few basics about sewer connections, flush valve use, toilet chemicals and special techniques for cleaning and deodorizing a problem sewage holding tank. In addition, we’ll review some details that every RVer should know about when and where to empty their black tank.


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We're handy RVers, not professional technicians. We're happy with the techniques and products we use, but be sure to confirm that all methods and materials you use are compatible with your equipment and abilities. Regardless of what we recommend, consult a professional if you're unsure about working on your RV. Any task you perform or product you purchase based on any information we provide is strictly at your own risk.

We sometimes receive products for evaluation at no cost, and The RVgeeks are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites. But our opinions are our own, you won’t pay an extra penny, and we only link to products we personally use, love and can recommend to friends with complete confidence.
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