- Blue Grass, IA has a few convenient dump stations for your RV waste disposal needs.- The Water Pollution Control Plant is one option where you can dump both black water and gray water, as well as fill up with fresh water if needed. - Another nearby option is the West Liberty RV Park, which offers a dump station along with other amenities for RVers.- Love's Travel Stop is also located in the area and provides facilities for dumping waste and refilling tanks.- Additionally, there is a rest stop on I-80 EB in Tiffin that offers a dump station for your convenience.- Remember to bring your hose for flushing tanks and dispose of any additional trash in designated RV trash bins.