Is graywater use legal?
Another good question and it all depends on your state s regulations. The majority of states require graywater to be treated as carefully as blackwater, sending it through a separate system and purifying it to the same high standard before being dispersed. A few states are considering loosening the restrictions, especially in the Southwest where residents experience frequent water shortages. The National Small Flows Clearinghouse maintains an extensive regulations database with searches available upon request. Homeowners interested in graywater reuse also should contact their state or local health department for regulatory clarification or interpretation. Depending on your state s regulations, technology for graywater reuse can be as simple as saving the rinse water from the clothes washer to rather complex treatment systems, such as one which the graywater flows to an aerobic treatment unit, then to a recirculating filter, and it is only ready for reuse after being disinfected with an
