Horizon City, Texas offers several convenient options for dumping your RV's black water and gray water tanks.Stop by the TA Travel Center, where you'll find a dump station along with fresh water and a hose for flushing tanks.Another option is the LoW-HI RV Ranch, which provides RV waste disposal services for travelers passing through the area.If you're heading west towards New Mexico, consider stopping at the City of Carlsbad Lift Station or the Wastewater Treatment Plant in Carlsbad for easy dumping.Remember to dispose of any additional RV trash in designated RV trash bins to keep the area clean.