Below Ground Rainwater Harvesting Tanks
Underground rainwater harvesting systems are easy to install, simple to maintain and automatic in operation.
They have been designed as a low-cost installation for self build projects and residential developments.
A range of underground rainwater harvesting systems to choose from by Harlequin for direct feed rainwater harvesting systems, and the Garden Angel.
We also offer larger rainwater harvesting systems from the Rainbox range, up to 50,000 Litres, so if a larger unit is required, please give our team a ring on 01643 703358, where we will be happy to help.
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1000 Litre Garden Angel
1000 Litre Garden Angel
Rain water is collected from your roof area. It is then passed through the PF1* filter system which removes any large pieces of debris, leaves, etc. and then into the underground tank through a calmed inlet designed to stop the disturbance of any sediment in the bottom of the tank. Excess water will pass through an overflow fitted to the tank to be connected to the storm...
£1,238.00 ex VAT
(£1,485.60 inc VAT)
1400 Litre Garden Angel
1400 Litre Garden Angel
Rain water is collected from your roof area. It is then passed through the PF1 filter system which removes any large pieces of debris, leaves, etc. and then into the underground tank through a calmed inlet designed to stop the disturbance of any sediment in the bottom of the tank. Excess water will pass through an overflow fitted to the tank to be connected to the storm...
£1,295.00 ex VAT
(£1,554.00 inc VAT)
Underground Home Harvest Direct Tank 1500 Kit
Underground Home Harvest Direct Tank 1500 Kit
When supply of rainwater is exhausted, the 'backup in a box' unit uses mains water to replenish the tank. The pump in the tank is then ensured of a constant supply of water to feed washing machines, toilets, garden taps, etc. Harlequinl''s 'HydroStore' tanks benefit from the company''s experience in providing tanks for...
£2,012.00 ex VAT
(£2,414.40 inc VAT)
Underground Rainwater Garden Harvest Tank 1500 Kit
Underground Rainwater Garden Harvest Tank 1500 Kit
A very simple rainwater harvesting system kit that allows the connection of a hose to the pump supplied within the tank to provide water for irrigating lawns, gardens and car washing. The Balmoral HydroStore allows full capacity storage and, when installed above the natural water table, does not require a concrete surround. The lower part of the body...
£1,725.00 ex VAT
(£2,070.00 inc VAT)
2200 Litre Garden Angel
2200 Litre Garden Angel
Rain water is collected from your roof area. It is then passed through the PF1 filter system which removes any large pieces of debris, leaves, etc. and then into the underground tank through a calmed inlet designed to stop the disturbance of any sediment in the bottom of the tank. Excess water will pass through an overflow fitted to the tank to be connected to the storm drain...
£1,393.00 ex VAT
(£1,671.60 inc VAT)
2400 Litre Garden Angel
2400 Litre Garden Angel
Rain water is collected from your roof area. It is then passed through the PF1 filter system which removes any large pieces of debris, leaves, etc. and then into the underground tank through a calmed inlet designed to stop the disturbance of any sediment in the bottom of the tank. Excess water will pass through an overflow fitted to the tank to be connected to the storm drain...

£1,444.00 ex VAT
(£1,732.80 inc VAT)
Rainwater Garden Harvest Underground Water Tank 2900 Kit
Rainwater Garden Harvest Underground Water Tank 2900 Kit
A very simple rainwater harvesting system kit that allows the connection of a hose to the pump supplied within the tank to provide water for irrigating lawns, gardens and car washing. The Balmoral HydroStore allows full capacity storage and, when installed above the natural water table, does not require a concrete surround. The lower part...
£2,025.00 ex VAT
(£2,430.00 inc VAT)
Rainwater Home Harvest Direct Water Tank 2900 Kit
Rainwater Harvesting Below Ground Water Tanks 2900 Kit
When supply of rainwater is exhausted, the 'backup in a box' unit uses mains water to replenish the tank. The pump in the tank is then ensured of a constant supply of water to feed washing machines, toilets, garden taps, etc Harlequin''s 'HydroStore' tanks benefit from the company''s experience in providing...
£2,378.00 ex VAT
(£2,853.60 inc VAT)
3300 Litre Garden Angel
3300 Litre Garden Angel
Rain water is collected from your roof area. It is then passed through the PF1 filter system which removes any large pieces of debris, leaves, etc. and then into the underground tank through a calmed inlet designed to stop the disturbance of any sediment in the bottom of the tank. Excess water will pass through an overflow fitted to the tank to be connected to the storm drain...
£1,548.00 ex VAT
(£1,857.60 inc VAT)
Rainwater Home Harvest Direct Water Tank 4400 Kit
Rainwater Harvesting Below Ground Water Tanks 4400 Kit
When supply of rainwater is exhausted, the 'backup in a box' unit uses mains water to replenish the tank. The pump in the tank is then ensured of a constant supply of water to feed washing machines, toilets, garden taps, etc Harlequin''s 'HydroStore' tanks benefit from the company''s experience in providing tanks...
£3,139.00 ex VAT
(£3,766.80 inc VAT)
6,000 Litre Rainbox Combi System
6,000 Litre Rainbox Combi Rainwater Harvesting System
What is Rainwater Harvesting?
Rainwater is collected from your roof area; it is then passed through a filter system which removes any large pieces of debris, leaves, etc. and then into the underground storage tank via a calmed inlet which is designed to stop the disturbance of any sediment in the bottom of the tank. Excess rainwater will...
£7,737.00 ex VAT
(£9,284.40 inc VAT)
10,000 Litre Rainbox Combi System
10,000 Litre Rainbox Combi Rainwater Harvesting System
What is Rainwater Harvesting?
Rainwater is collected from your roof area; it is then passed through a filter system which removes any large pieces of debris, leaves, etc. and then into the underground storage tank via a calmed inlet which is designed to stop the disturbance of any sediment in the bottom of the tank. Excess rainwater will...
£8,285.00 ex VAT
(£9,942.00 inc VAT)
12,000 Litre Rainbox Combi System
12,000 Litre Rainbox Combi Rainwater Harvesting System
What is Rainwater Harvesting?
Rainwater is collected from your roof area; it is then passed through a filter system which removes any large pieces of debris, leaves, etc. and then into the underground storage tank via a calmed inlet which is designed to stop the disturbance of any sediment in the bottom of the tank. Excess rainwater will...
£9,000.00 ex VAT
(£10,800.00 inc VAT)
14,000 Litre Rainbox Combi System
14,000 Litre Rainbox Combi Rainwater Harvesting System
What is Rainwater Harvesting?
Rainwater is collected from your roof area; it is then passed through a filter system which removes any large pieces of debris, leaves, etc. and then into the underground storage tank via a calmed inlet which is designed to stop the disturbance of any sediment in the bottom of the tank. Excess rainwater will...
£9,636.00 ex VAT
(£11,563.20 inc VAT)
16,000 Litre Rainbox Combi System
16,000 Litre Rainbox Combi Rainwater Harvesting System
What is Rainwater Harvesting?
Rainwater is collected from your roof area; it is then passed through a filter system which removes any large pieces of debris, leaves, etc. and then into the underground storage tank via a calmed inlet which is designed to stop the disturbance of any sediment in the bottom of the tank. Excess rainwater will...
£10,200.00 ex VAT
(£12,240.00 inc VAT)
FAQs
What is Rainwater Harvesting?
Rainwater harvesting is the collection and storage of rainwater, instead of letting it be dispersed into the ground. There are various rainwater harvesting methods available but generally rainwater is collected from roof-like surfaces and redirected to a rainwater harvesting tank, either above the ground or below.
Rainwater harvesting has traditionally been used for watering the garden but, thanks to new technology, a rainwater harvesting system can be plumbed into your home’s existing pipework so that you can harvest rainwater to flush your toilets, wash your clothes and many other non-human consumption related applications. According to the Rainwater Harvesting Association, you could reduce your water consumption by as much as 40% which will lower your water bills if you’re on a water meter.