Underground Rainwater Tanks

The underground rainwater tank range offer an alternative to above ground water collection. Useful for when standing space is limited, or when placement of such a tank would not offer the pleasing ascetics. Read More

Included in our range are the Harlequin Rainwater Harvesting tanks, a complete system with a pump and requirement for a shallow excavation only. These systems offers an ideal solution for when over ground space is unavailable but huge groundworks are not an option.

An underground rainwater harvesting system offers an opportunity to reduce demand on the mains water supply and consequently, the amount on your water bills.

Looking for a rainwater collection tank without the excavation requirements? View the range an above ground rainwater tanks here.

Can’t see what you are looking for in our underground rainwater tank category? Our range is extensive and we may be able to offer tanks not currently on our website. Get in touch with your requirements here.

£270.90 Exc VAT (£325.08 Inc VAT)
£315.00 Exc VAT (£378.00 Inc VAT)
£360.00 Exc VAT (£432.00 Inc VAT)
£360.00 Exc VAT (£432.00 Inc VAT)
£401.00 Exc VAT (£481.20 Inc VAT)
£421.20 Exc VAT (£505.44 Inc VAT)
£427.50 Exc VAT (£513.00 Inc VAT)
£486.00 Exc VAT (£583.20 Inc VAT)
£495.00 Exc VAT (£594.00 Inc VAT)
£495.00 Exc VAT (£594.00 Inc VAT)
Price From: £549.38 Exc VAT (£659.26 Inc VAT)
£888.25 Exc VAT (£1,065.90 Inc VAT)

Underground Water Tank Accessories

2700 Litre Underground Water Tank – GRAF

Price £935.00 Exc VAT (£1122.00 Inc VAT)
£950.00 Exc VAT (£1,140.00 Inc VAT)
£974.25 Exc VAT (£1,169.10 Inc VAT)
Price From: £989.26 Exc VAT (£1187.11 Inc VAT)

Underground Water Tanks

3,500 Litre Underground Water Tank

£990.00 Exc VAT (£1,188.00 Inc VAT)
£1,080.00 Exc VAT (£1,296.00 Inc VAT)

Underground Water Tank Accessories

3750 Litre Underground Water Tank – GRAF

Price £1,094.00 Exc VAT (£1312.80 Inc VAT)
Price From: £1,156.60 Exc VAT (£1387.92 Inc VAT)
£1,210.00 Exc VAT (£1,452.00 Inc VAT)
Price £1,260.00 Exc VAT (£1512.00 Inc VAT)

Underground Water Tank Accessories

4800 Litre Underground Water Tank – GRAF

Price £1,290.00 Exc VAT (£1548.00 Inc VAT)
£1,346.00 Exc VAT (£1,615.20 Inc VAT)

Underground Water Tank Accessories

6500 Litre Underground Water Tank – GRAF

Price £1,382.75 Exc VAT (£1659.30 Inc VAT)
£1,435.00 Exc VAT (£1,722.00 Inc VAT)
Price From: £1,795.60 Exc VAT (£2154.72 Inc VAT)
Price From: £1,995.00 Exc VAT (£2394.00 Inc VAT)
£2,000.00 Exc VAT (£2,400.00 Inc VAT)