Greywater 101: Greywater, water from sinks, showers, and washing machines, is a great source of irrigation and can greatly reduce your outdoor water use. Greywater systems are especially important in times of drought. Come learn about popular greywater systems, design considerations, water saving potential, costs, regulations, health and safety, soaps and products, and how to choose a system that is a good match for your home and landscape. About the educator: Patrick Loderhose is a level 3 California trained greywater installer and designer. He has a background in Permaculture and teaches it professionally. Patrick also works as an on-site water management strategist and rainwater harvesting installer/designer.