The award winning Green Roof Water Recycling System, G.R.O.W., developed by WWUK is ideal for new build or refurbishment schemes of low-rise multi-story housing and, therefore, particularly suited to the requirements of Local Authorities, Housing Associations and other high density development where significant numbers of residential units are accommodated in a single block under one roof.
The Green Roof is essentially a garden of low growing, flowering, native plants, whose roots can perform the same cleansing function as a reed bed.
Grey water (used wash water collected from showers, sinks and baths) is treated as it flows through the plants root system. The treated water is termed green water, which is safe to use for toilet flushing, cleansing public areas, and watering the garden.
- G.R.O.W. measures 4m x 2m x 1m (high) and can serve between 30-45 people. It can cut water bills to residents by 30%
- It is very suitable for installation in areas where water is scarce or expensive, especially , for example, in the Mediterranean Basin, island communities or small blocks of flats in urban areas.
Price can be negotiated, but allow around €120-150 per person (based on 40 people).
G.R.O.W. 2, (its baby sister) measures about 2m x 1m x 1m (high) and is suitable for installation on individual properties to produce green water for garden watering and simple horticultural irrigation. Beat the drought and hose pipe bans!
G.R.O.W. and G.R.O.W. 2 are living systems and require care and simple maintenance to function effectively.
Other Advantages of the Green Roof Water Recycling System:
- Visual amenity
- Absorption of dust particles
- Low maintenance
- Lower water bills
- Green credentials for developers and planners
Installed as a single unit at roof top level, this system will require no extra land, something that makes some other external forms of water recycling an expensive option, especially in inner cities. The system would also be able to provide thermal insulation to buildings in winter and act as a cooling layer in summer.