Graywater Systems FAQs

Q. What is graywater?
A. Water that is collected after being used in sinks, showers, baths, dish washers, and clothes washers.
 

Q. What are the uses for recycled graywater?
A. In the United States toilet flushing and subsurface irrigation are the only uses allowed at this time.  In Europe it is also legal for recycled graywater to be used for laundry.

Q. How does the A.Gain Graywater System work?
A. The graywater from shower and bath is collected in the underground membrane bioreactor (MBR). The function of the MBR is an aerobic biological treatment and an ultrafiltration by a membrane filter. The aeration is integrated in the filter unit and the compressor is installed indoor. The filter unit is submerged and filtration itself is only driven by the pressure of the water on top of the filter unit. Due to the small porosity of the filtration any particles, the solid soils, bacteria and viruses are kept out of the clear water.

Q. How much maintenance is required with the A.Gain Graywater System?
A. Very little maintenance is required, because the filtration system has an automatic self-cleaning function.  The system is checked one time per year for proper operation.

Q. How does recycling graywater help conserve water and save money?
A. By capturing graywater and treating it we are typically able to provide 100% of a residential home’s water used for toilet flushing and subsurface irrigation.  Toilet flushing alone represents 25-30% of water use in a home and 85% of water use in a commercial setting.  As water rates continue to rapidly increase, recycling graywater can have a significant payback.

Q. Is graywater hazardous?
A. The A.Gain Graywater System treats the water before it is stored and produces purified water.  It is a closed system that allows no opportunity for hazardous contamination of any kind.