Most modern motorhomes come with an RV black tank flush. This feature helps clean your RV’s black water tank after emptying its contents. If this feature is new to you, let’s talk about how to use an RV black tank flush.
Why Use an RV Black Tank Flush?
PC Camping WorldMost RV old-timers probably remember the days before this feature was commonplace. Without it, the best way to flush your black tank is to go inside and flush the toilet a bunch of times—filling your tank with several gallons of water—before emptying it a second time.
Or, you open your bathroom window, run a hose inside, stick it down the toilet, and try to flush your tank out that way. DON’T TRY THAT! I’ve been there and done that—unsuccessfully. As a result, I think I’m blacklisted from a certain Southern California RV park. But that’s a story for another time.
Here are the benefits of an RV black tank flush:
Eliminates the need to go inside to flush water down your toilet.Dislodges stuck toilet paper and solid waste.Clears holding tank sensors to provide more accurate level readings.Removes “leftovers” that can cause irritating odors.As a side benefit, it cleans out your sewer hose.Where Can You Use an RV Black Tank Flush?
Photo by Benjamin Clapp via ShutterstockCampgrounds with full hookups and RV dump stations are the best places to utilize your black tank flush. They offer the two main things you need to get your black water tank clean: a place to dispose of your waste and a source of clean water to clean out your tank.

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