Graywater is the wastewater from bathtubs, showers, bathroom wash basins, clothes washing machines and laundry tubs. It does NOT include wastewater from kitchen sinks, dishwashers, toilets or laundry water from soiled diapers.
A Graywater System is a private plumbing system that is underground on private property and uses graywater to irrigate landscaping under specific conditions.
Graywater is similar to recycled in that both systems require completely separate piping from potable (drinking) water pipes. However, graywater is not treated prior to distribution for irrigation. It is delivered through a private plumbing system, which is separate from the existing sewer system pipes, and used for subsurface irrigation for that private property owner only. Recycled water, on the other hand, is treated before it is delivered through its own designated pipelines (designated by their purple color) and used for above-ground irrigation for properties that are connected to recycled water pipelines.
Graywater potentially carries bacteria than could pose a health risk, and the regulations prohibit surface use of graywater where it could come in contact with humans or animals. However, by following the regulations, a graywater system may be constructed to safely dispose of wastewater and use it for irrigation.
Since most private residences currently use potable (drinking) water for irrigation, a graywater system can reduce potable water consumption. A graywater system does not reduce the size of an onsite private sewage disposal system (septic tanks). However, a graywater system may extend the life of an onsite private sewage disposal system.
District customers must obtain permits from the County of San Bernardino before installing a graywater system. For more information, contact:
- Twin Peaks Office, 26010 State Highway 189, Twin Peaks, CA 92391 – (909) 336-0640
