When it comes to dumping in Colonia, New Jersey, you have several options. The Middletown Sewerage Authority offers a convenient dump station for your black water and gray water needs. Liberty Harbor Marina & RV Park is another great option with amenities like fresh water and a hose for flushing tanks. If you're looking for a dump station near military facilities, check out Military Park - Earle RV Park. Marion Campground and RV Park are also worth considering, offering an RV trash bin and waste disposal services.Exploring Colonia, New Jersey with an RV from RVshare is a unique and easy way to cover your lodging and transportation needs. 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.