- Harvest rainwater & save metered water.
- Supply rainwater to your house and garden.
- Help protect the environment.
- Complete systems include tank, pump, filters & control unit.
- Automatically switch to mains water when the tank is dry.
Rainwater harvesting systems from Graf can reduce your drinking water usage by up to 50%. Collected water can be used for flushing toilets, washing cars, washing machines and irrigating gardens. Rain harvesting systems also reduce the load on sewer networks by collecting water during periods of peak rainfall.
Utilising the latest technology complete systems from Graf meet the needs of both convenience and reliability.
All Graf Carat S tanks come with a 15 year warranty. With 40 years of experience in developing and manufacturing very high quality plastic products Graf are the market leader for plastic rainwater collection tanks in Germany and Europe and have one of the largest ranges on the market.
Because of their low weight tanks with volumes up to 6,500 litres can be installed without the need of a crane. The smooth inner and outer tank surfaces help to maintain water quality and simplifies cleaning.
The new range of tanks are manufactured in Germany to high standards of qulaity and dimensional tolerance in one of the most modern and efficient plastic manufacturing facilities in the world. When installed some of the Carat S tanks are robust enough to bear the weight of a lorry and they can be installed in ground water at depths as high as the middle of the tank.

Carat S Eco Plus Home & Garden Supply Package
- Economic package solution.
- Tanks from 3750 to 33000 litres.
- Patented filter technology with automatic switch-over to mains water supply.
- Easy to assemble due to modular components.
- Float switch controlled.
- Low visual impact.
Price from £1,901.21
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Carat S Professional Home & Garden Supply Package
- Professional solution.
- Tanks from 3750 to 33000 litres.
- Patented filter technology with automatic switch-over to mains water supply.
- Easy to assemble due to modular components.
- Microprocessor control system.
- Digital fill level display.
- Automatic rinsing intervals for the intake reservoir and filter.
- Low visual impact.
Price from £2,591.62
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