Each and every aspect of your RV has some level of relevance. With the motor to the aid handles, everything issues. But, as any seasoned RVer knows, usually there are some objects that sit solidly within the pantheon of “most critical” objects. The water/holding tank is one of those items. https://forboat.eu/marine-plumbing-supplies-for-boat/waste-water-holding-tanks-for-boat/