What kind of holding tank does an RV have?
Zoe Patterson
Published Feb 07, 2026
What kind of holding tank does an RV have?
For readers not familiar with the inner working of an RV let’s start with RV holding tanks in general. RVs come equipped with a gray water holding tank, a black water holding tank, and a fresh water holding tank. Our concern today is with the RV’s gray and black water holding tanks.
How long does it take to fill a holding tank in an RV?
Run the water until you smell the bleach, then let the tank sit for at least 24 hours after you have drained all the bleach water. Refill the tank, then run the water again, until the smell of bleach is gone. You can then refill the holding tank as usual.
What should I use to Clean my RV holding tank?
If the water is contaminated or smells bad, you can use household bleach to disinfect the RV’s holding tank. Run the water until you smell the bleach, then let the tank sit for at least 24 hours after you have drained all the bleach water. Refill the tank, then run the water again, until the smell of bleach is gone.
How does a holding tank sensor work in a RV?
While you are camping you need to know how much content is in the holding tanks so you know when it is time to empty them. To accomplish this, the RV has a monitor panel. It displays the gray and black water tank levels in ¼, ½, ¾, and full tank increments. Note: Some tank sensors are installed at the 1/3, 2/3 and full levels.
What do you need to know about RV holding tanks?
If renting, be sure to request a walkthrough from the RV owner. Before your first waste water dump, make sure you have a sewer hose and some gloves to protect your hands. Next, be sure to identify the valves on the outside of your RV. These will be clearly marked “grey” and “black”.
Can a camper holding tank last a lifetime?
Camper holding tanks that come from the manufacturer are very thin and will crack with ease, but the ABS RV holding tanks will last a lifetime if properly installed. These RV holding tanks are easy to install with full directions so you don’t get left out in the cold.
What kind of service do I need for my black water tank?
If all else fails, you can ask those RVers you meet along the road and find out which service they used and how much it cost them. You may be thrown by the name but a honey wagon service is a company that comes to your RV and drains your black water tank. They service RV campgrounds like KOA and do their job well.
What should I replace my holding tank with?
Replace your old holding tank blanks with a long lasting satisfaction guaranteed tank blank. Make sure you also check out our ABS adapter sleeves, cement and rubber grommet to get the job done on your RV today.