Rain Water Harvesting

Almost one-third of the average household's water is flushed down the toilet. Although purified water is required for drinking, cooking, dishwashing and body care, this makes up less than half the water usage of a typical household.

Save on your water bills by using rainwater for toilet flushing, washing machines, garden water and car washing.

Rainwater from a RainSava system can be used for:

• Toilets
• Washing machines
• Irrigation
• Vehicle washing

Benefits of the domestic RainSava system:

• It can save up to 50% on mains water use
• Water bills are reduced
• It improves the sustainability of water use
• It is low maintenance
• As rainwater is soft, there is no lime scale
• The below-ground tank means it is discreet and there is no algae growth
• Rainwater is best for garden watering
• Designed in accordance with BS8515: 2009 Rainwater Harvesting Systems Code of Practice

3 Important Principles of Rainwater Storage

1. Water that enters the tank must be 'calmed' - i.e. rather than openly discharge into the tank; it should be directed to the bottom where it can gently percolate upwards below the minumum water level.
2. The tank must overflow periodically, at least twice per year, in order that any floating debris can be removed by the skimming effect of a suitable overflow device. For this reason the volume of the tank should be carefully calculated to ensure that overflow conditions occur. These first tow principles are take care of by the 'smoothing inlet' and the overflow trap fitted to RainSava tanks.
3. Water should be extracted from the cleanest part of the tank; i.e. just below the surface, as achieved by the use of a fixed or floating suction filter. This ensures that the water extracted avoids both floating debris and bottom sediments. It is important that this bottom sediment is not disturbed as in time it will form a beneficial biological layer that assists in maintaining water quality.

Cleaning the filter is the only routine maintenacne necessary for the operation of the system, although a visual check of the tank and its components should be carried out on an annRainSava system is made up of a number of separate components. Some of these are located in the underground storage tank, whilst the flow controller, the mains water top-up assembly and the level gauge (if used) can be gitted in a convenient location within the building (e.g. utility or plant room).