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  • Writer's pictureJonathan Miller

How To Use a Portable Waste Tank

Updated: Jul 12, 2022

Our first time out camping we hit a state park. We quickly realized there were no sewer hookups. After that experinece we decided to get a portable waste tank. We love the Camco Rhino 28 Gallon Tank which came with all of the connectors that we needed. For a longer connection you may need extra hoses.


As always, when you purchase a new product, familiarize yourself with the instructions.


Here are a couple of our helpful tips:


Always flush the black tanks first. Use grey tanks to help clean up hoses toward the end of the dumping process. If more than one grey tank, dump the galley tank (food bits) before dumping the shower or laundry grey tank (soap water), which should be dumped last.


If possible, provide downward slope to the portable tank, or connect a macerating pump to push the water up to the portable tank inlet. If this is not possible- use a length of sewer hose to create a low lying bow which can be manually manipulated to move the water back up hill to your portable waste tank.






Visually monitor the level of waste in the portable tank to prevent overflow. Use your valves during the dumping process to start and stop the waste output based on how full the portable tank is getting.


When close to full- shut camper waste gate valves and lift sewer hose from camper toward portable tank to empty the sewer hose of standing water and flush the remaining waste water into the portable tank.





Then disconnect sewer hose and tighten portable waste tank caps.


Attach the hitch connection to the portable tank and haul it to the dump station at no more than 5MPH.





Once at the dump station attach appropriate sewer hose connections and open the vent cap on the portable waste tank before dumping. Use the non-potable flush provided at the dump station to rinse the tank before returning to your camper.


Repeat the process as many times as necessary until all black and grey tanks are emptied and you can continue camping.


To store the tank for transport you can hang and secure (with minimum of two straps) the clean and empty tank on your rear facing roof access ladder, a bumper wrack, or in your truck bed if you have a TT.



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