At Cactus Flats, Arizona, you'll find several options for dumping black and gray water, filling up fresh water, and even a hose for flushing tanks. - Love's Travel Stop offers clean facilities and a convenient location off of I-10.- Flying J Travel Plaza is another popular option with amenities such as propane and a dump station.- Speedway Gas Station provides a quick stop option for those needing dumping or water refills.- Pima County Fairgrounds offers an affordable place to dump your tanks while also offering access to trash bins and fresh water.