In Seneca, Kansas, there are a few options for RV dump stations to take care of your black water and gray water disposal needs. You can find dump stations at Johnson County Fairgrounds, Indian Cave State Park, the Sewage Plant, and Maple Hill Truck Stop. These locations offer convenient access to fresh water for flushing tanks and provide facilities for proper RV waste disposal. Whether you're passing through or staying in Seneca, these dump stations will help you maintain a clean and functional RV without any hassle. Some locations listed in this article are the nearest of their kind to the starting point, and the actual drivable distance could exceed 200 miles.