Gray water is waste water that has the potential for reuse. To be considered gray water, or sullage, their must be no human/organic waste (feces) or toxic chemicals. Such sources would include water from normal sink use and shower/bathtub use, or at times used wash water from clothes or dish washing units. This partially used water can be recycled for irrigation or used to flush toilets. Gray water is not potable and there are varying degrees of purity (dark gray to “black water” being most heavily used). With partial filtration, or even with no treatment, gray water can be a valuable and reusable resource.
Saniflo makes gray water pumps that are compact and adapted for domestic use. Gray water from household activity is pumped and stored into the Saniflo tank where it can be called upon later to flush a toilet or sent to the garden for irrigation. The addition of a gray water pump system to your home means lowering the demand put on water treatment and sewage treatment plants. Potable water isn’t necessary for many of our needs. Currently, the laws around gray water for domestic irrigation are comparable to those regarding septic tank use. There is headway in legislation towards the recognition of the importance and value of gray water systems however.