Yes, a waterfall can be built with the water cascading into a reservoir that can be chlorinated to keep the water clean.Water gardens come in all shapes and sizes visit our​ Gallery of Ponds to see how aesthetically pleasing, soothing and what a focal point a pond can bring to any backyard landscapes. Water gardens add a unique dimension to homes and even with limited space, you can design a water feature that brings the beauty of nature into your backyard.