Rainwater Recovery -
How Does it Work?
The Working Principle
- Rainwater is captured via your existing guttering and drain-pipes.
- The rain water is then filtered.
- The rain water is stored in single, or multiple connected tanks, above or below ground.
- When needed, the rain water is pumped either directly to the points of demand, or to an internal holding tank.
- If the system runs low on rainwater the mains water back-up pump unit is activated and mains water supplies the systems. Equally if there is too much rainwater, it overflows to your existing soak away or drainage system.
- Once it rains again, the rainwater is collected and the system automatically changes back to the rainwater supply.
Key System components
- Filter Units – remove silt and leaves.
- Storage tanks – these can be above or below ground and come in a variety of shapes and sizes and are made of a variety of different materials i.e. plastic, GRP, or even concrete.
- Pumps & Controls – manage demand i.e. pump water to your point of use and controls the level of mains supply to your system.
- Your existing guttering and downpipes from your roof may need to be modified to bring the water to a central point.
- If you prefer the storage tanks to be underground then excavation work will be required.
- Some internal plumbing is usually required to separate the drinking and bathing water from the non-drinking rain water for your toilets, washing machine & outside taps.
There are three main types of system
Types of System
- Gravity Fed Systems
- Direct Fed Systems
- Commercial Systems