Unfortunately, RV plumbing and sewage involves a lot more than flushing your RV's toilet. Fortunately, Camping World has what you need to ensure your waste and sewage disposal process is as efficient as possible. RV holding tanks hold both fresh water and wastewater until the freshwater depletes or until the container fills with wastewater. Holding tanks from Camping World allow you to easily dump waste and keep your RV free of odors and waste residue. As a Good Sam member, you also get free access to black tank dump stations at all Camping World locations that offer it.