No complicated plumbing or installation is necessary, as this exterior decorative accent includes an electric submersible pump that continuously recirculates water throughout the fountain. Create a Zen-like atmosphere by adding this tranquil water feature to your garden, yard, patio and anywhere else a little peace and decoration is needed. WARNING: This product can expose you to chemicals including Di(2-ethylhexyl)phthalate (DEHP), which is known to the state of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov