Rainwater Harvesting Tanks

Harvest rainwater from your factory roof, office block, construction site welfare unit or garden room etc. With our range of rainwater harvesting tanks there is a solution for everybody.

The cost of many everyday essentials such as electricity, gas and water has been hitting all-time highs. Although some of these utility costs are down from their historic highs, they have not gone back to where they once were. With that in mind, who wouldn't be interested in reducing costs by harvesting a natural and free resource, rainwater. Let's face it we have plenty of it in the UK

With some careful thought and planning, you could be reaping the rewards of harvesting rainwater, sooner than you know.

Technical Data

1250 Litre Above Ground Rainwater Tank

The 1250 litre above ground tank is a compact and efficient solution for rainwater harvesting in residential, agricultural, and light commercial settings. Ideal for collecting and storing rainwater from rooftops or gutter systems, this tank supports sustainable water use for tasks such as garden irrigation, greenhouse watering, vehicle cleaning, or topping up water features.

Made from UV-stabilised high-density polyethylene (HDPE), it offers excellent durability and resistance to corrosion, impact, and harsh outdoor conditions. The ribbed design enhances structural strength, while its small footprint makes it a great choice for properties with limited space.

Designed for easy above ground installation with no excavation required, the tank can be supplied with optional pre-fitted outlets for straightforward connection to hosepipes, pumps, or irrigation systems. Whether used for a domestic garden setup or small-scale rainwater capture, this 1250 litre tank provides a dependable, low-maintenance solution for harvesting and reusing rainwater efficiently.

Volume
(litres/gallons)
Format
(S/SL/LP)*
Diameter
(mm)
Height
(mm)
Weight
(KGs)
Lifting
Points
Lid Size
(mm)
WRAS
Approved
Typical
Outlet
1,250/275
Standard
1,200
1,245
35
4
455
No
2"
2500 Litre Above Ground Rainwater Tank

The 2,500 litre above ground tank is a smart and sustainable solution for collecting and storing rainwater in domestic gardens, smallholdings, allotments, and commercial outdoor spaces. Perfect for reducing reliance on mains water, this tank is ideal for rainwater reuse in applications such as plant watering, car washing, greenhouse irrigation, or general outdoor cleaning.

Its medium capacity strikes a practical balance between size and storage volume, making it especially suitable for properties with moderate rainfall and limited installation space. Rotationally moulded from UV-stabilised high-density polyethylene (HDPE), the tank is tough, weather-resistant, and built to withstand years of exposure to the elements. The ribbed design adds strength and stability, even in challenging outdoor conditions.

Designed for simple aboveground placement, the tank requires no groundworks and can be supplied with optional pre-fitted outlets for easy connection to hosepipes, water butts, or garden pumps. A reliable, low-maintenance option for rainwater harvesting, this 2,500 litre tank supports eco-friendly water use all year round.

Volume
(litres/gallons)
Format
(S/SL/LP)*
Diameter
(mm)
Height
(mm)
Weight
(KGs)
Lifting
Points
Lid Size
(mm)
WRAS
Approved
Typical
Outlet
2,500/511
Standard
1,400
1,845
60
4
620
Yes
2"
5000 Litre Above Ground Rainwater Tank

The 5,000 litre above ground tank is an excellent choice for capturing and storing rainwater from roofs, guttering, or surface runoff, ideal for use in agricultural, horticultural, and commercial environments. Whether you're collecting rainwater for garden irrigation, polytunnel watering, vehicle washing, or general outdoor cleaning, this tank provides a dependable and eco-conscious solution.

Its generous capacity makes it well-suited for properties or sites with high water demand, while the space-saving footprint allows for installation even where ground area is limited. Made from UV-stabilised high-density polyethylene (HDPE), the tank offers exceptional durability and weather resistance, and its ribbed construction ensures long-term strength and stability in exposed outdoor locations.

This tank is designed for quick and easy above-ground setup, no excavation or specialist groundwork needed. Optional pre-fitted outlets and connections make it simple to link the tank with hosepipes, irrigation systems, or rainwater diverters. For anyone seeking a sustainable, low-maintenance rainwater harvesting solution, this 5,000 litre tank is a reliable and practical choice.

Volume
(litres/gallons)
Format
(S/SL/LP)*
Diameter
(mm)
Height
(mm)
Weight
(KGs)
Lifting
Points
Lid Size
(mm)
WRAS
Approved
Typical
Outlet
5,000/1,101
Standard
1,900
2,300
120
4
620
Yes
2"
5,000/1,101
Low Profile
2,600
1,370
140
4
620
Yes
2"
10,000 Litre Above Ground Rainwater Tank

The 10,000 litre above ground tank is a reliable and cost-effective solution for capturing and storing large volumes of harvested rainwater. Ideal for agricultural holdings, commercial premises, and landscape maintenance, it supports eco-friendly water use for tasks such as crop irrigation, greenhouse watering, vehicle washing, or topping up ponds and water features.

Engineered from UV-stabilised high-density polyethylene (HDPE), this tank is built to withstand long-term outdoor exposure. The robust ribbed construction enhances its structural strength, offering resistance to impact, weather extremes, and corrosion, ensuring dependable service in all seasons. Its generous capacity is perfect for high rainfall areas or sites with large roof catchments.

With no need for excavation, installation is simple and hassle free. The aboveground format allows for flexible placement, and optional factory-fitted outlets make integration with rainwater diverters, pumps, or drip-feed irrigation systems easy. If you're seeking a long-term, sustainable water storage solution, this 10,000 litre rainwater harvesting tank delivers on performance, durability, and environmental benefit.

Volume
(litres/gallons)
Format
(S/SL/LP)*
Diameter
(mm)
Height
(mm)
Weight
(KGs)
Lifting
Points
Lid Size
(mm)
WRAS
Approved
Typical
Outlet
10,000/2,203
Standard
2,400
2,600
190
4
620
Yes
2"
10,000/2,203
Slimline
1,900
3,770
240
4
620
Yes
2"
10,000/2,203
Low Profile
2,600
2,290
240
4
620
No
2"
15,000 Litre Above Ground Rainwater Tank

Designed for efficient rainwater capture and storage, the 15,000 litre above ground tank is an excellent solution for those looking to maximise water collection from large roof spaces or catchment areas. Whether you're supporting irrigation systems on agricultural land, reducing mains water use in commercial landscaping, or collecting runoff for cleaning and general outdoor tasks, this tank provides a practical and sustainable option.

Its high capacity makes it ideal for sites with consistent rainfall and high water usage needs. Constructed from UV-stabilised high-density polyethylene (HDPE), the tank is engineered to withstand long-term outdoor exposure. The reinforced ribbed body enhances its strength, offering excellent resistance to impact, weathering, and corrosion.

Installation is straightforward with its above ground configuration, no excavation necessary. Optional pre-fitted outlets allow for easy connection to rainwater diverters, pump systems, or gravity-fed irrigation setups. This 15,000 litre rainwater harvesting tank is a dependable, low-maintenance storage solution for environmentally conscious water use across farms, estates, and commercial premises.

Volume
(litres/gallons)
Format
(S/SL/LP)*
Diameter
(mm)
Height
(mm)
Weight
(KGs)
Lifting
Points
Lid Size
(mm)
WRAS
Approved
Typical
Outlet
15,000/3,304
Standard
2,400
3,720
320
4
620
Yes
2"
15,000/3,304
Low Profile
2,600
3,100
320
4
620
No
2"
20,000 Litre Above Ground Rainwater Tank

When high-volume water collection is essential, the 20,000 litre above ground rainwater harvesting tank offers a reliable and eco-conscious solution. Perfect for large-scale agricultural operations, commercial premises, estates, and equestrian centres, this tank allows you to collect and store substantial amounts of rainwater for reuse, helping reduce dependency on mains supply and lowering water costs.

The tank’s generous capacity makes it ideal for high-yield roof catchment systems or extended periods of rainfall. Whether you're using harvested rainwater for irrigation, livestock care, cleaning machinery, or topping up ponds and troughs, this tank is designed to handle demanding workloads.

Moulded from UV-stabilised high-density polyethylene (HDPE), the tank features a reinforced ribbed body for added strength and long-term durability in outdoor conditions. Installation is quick and simple with its above ground format, and optional pre-fitted outlets allow for easy setup with pumps, filtration units, or gravity-fed systems. For anyone committed to sustainable water use, this 20,000 litre rainwater tank provides robust, low-maintenance performance year after year.

Volume
(litres/gallons)
Format
(S/SL/LP)*
Diameter
(mm)
Height
(mm)
Weight
(KGs)
Lifting
Points
Lid Size
(mm)
WRAS
Approved
Typical
Outlet
20,000/4,405
Standard
2,850
3,620
430
4
620
No
2"
25,000 Litre Above Ground Rainwater Tank

Designed for high capacity rainwater collection, the 25,000 litre above ground tank is an ideal choice for sites looking to maximise water efficiency and sustainability. Suitable for farms, commercial nurseries, business parks, and rural estates, this tank allows you to capture and store large volumes of rainwater from roof surfaces or hard-standing runoff for reuse across a wide range of non-potable tasks.

Common uses include irrigation for crops and landscaped areas, equestrian yard cleaning, power washing machinery, or supplying water to troughs and storage systems. Its significant capacity helps reduce reliance on mains supply while making the most of naturally available resources.

Manufactured from UV-stabilised high-density polyethylene (HDPE), the tank is built to withstand challenging outdoor environments. Its ribbed construction enhances durability and ensures excellent resistance to weather, impact, and corrosion. Installation is simple with its above ground format, and optional pre-fitted outlets make integration with rainwater diverters, pumps, or filtration units easy. For dependable, long-term rainwater harvesting, this 25,000 litre tank offers both performance and peace of mind.

Volume
(litres/gallons)
Format
(S/SL/LP)*
Diameter
(mm)
Height
(mm)
Weight
(KGs)
Lifting
Points
Lid Size
(mm)
WRAS
Approved
Typical
Outlet
25,000/5,507
Slimline
2,700
4,720
530
4
620
Yes
2"
25,000/5,507
Low Profile
3,450
3,100
540
4
620
No
2"
30,000 Litre Above Ground Rainwater Tank

The 30,000 litre above ground tank is a powerful solution for large-scale rainwater harvesting, built to serve high demand operations where water efficiency is key. Ideal for use on commercial farms, industrial estates, equestrian centres, and horticultural sites, this tank enables the collection and storage of substantial volumes of rainwater from buildings, barns, and hard-standing areas.

Perfect for reusing rainwater in large-scale irrigation systems, yard or stable washdown, dust control, or supplying filtered water to remote buildings, this tank supports sustainable water use while reducing pressure on mains supply. Its extra-large capacity makes it well suited for regions with frequent or heavy rainfall.

Constructed from UV-stabilised high-density polyethylene (HDPE), the tank is rotationally moulded for enhanced durability and strength. The ribbed exterior adds rigidity, offering excellent resistance to impact, corrosion, and long-term weathering. Above ground installation is simple and fast, no digging required and optional factory-fitted outlets allow seamless connection to pumps, filters, or rainwater re-use systems. For dependable and eco-conscious water storage, the 30,000 litre rainwater tank is a top-tier choice.

Volume
(litres/gallons)
Format
(S/SL/LP)*
Diameter
(mm)
Height
(mm)
Weight
(KGs)
Lifting
Points
Lid Size
(mm)
WRAS
Approved
Typical
Outlet
30,000/6,608
Standard
3,450
3,650
600
4
620
Yes
2"
  • S = Standard Tank, SL = Slimline Tank, LP = Low Profile Tank, Please note tank dimensions differ.
  • We use differing grades of plastic and vary the tank wall thickness to match the tank to your application.
  • Please note: tank sizes quoted are subject to a +/-3% variation as they expand and contract relative to temperature.
  • We reserve the right to amend the technical specification to improve the product without prior notification.

DOWNLOADS & LINKS

TECHNICAL ADVANTAGES

  • Reducing costs and lowering your reliance on treated, mains water by using rainwater for everyday tasks
  • Conserve and control your water resources - why use treated water, when there are cheaper alternatives
  • Makes an abundant natural resource work for you
  • Tanks can be linked together to increase capacity
  • Can be connected to a pump to move water around site under pressure
  • Adaptable, rust-free, hygienic - flexibility guaranteed
  • Rainwater harvesting is sustainable and environmentally friendly

Technical Advantages

  • Made from a one-piece moulding using strong and durable plastic polymer (MDPE)
  • Robust, impact-resistant, long-lasting, UV-stabilised and rust free
  • Rotationally moulded in the UK using a heated, hollow mould filled with plastic polymer, guaranteeing consistent quality and dimensions
  • Cylindrical in shape with strengthening ribs
  • Lightweight plastic means manufacturing costs are less than their metal counterparts.
    The result is a product which is cheaper and easier to transport, and reduces your carbon footprint.
  • A range of volumes from 2500 to 30,000 litres (550 to 6600 gallons) and in Standard, Slimline and Low Profile shapes.
    Tanks can be linked together to extend capacity.
  • An extensive range of accessories to configure the tank(s) for your site / application
  • Built in lifting points - for use when empty
  • Flat base for stability
  • 620mm vented lid

APPLICATIONS

  • Great for flushing toilets in welfare cabins on construction sites or for camping toilet blocks
  • Garden and plant watering, field irrigation, yard cleaning
  • Wash down machinery or vehicles
  • Use as ballast or dust suppression on construction sites and industrial premises
  • An extra resource in the unfortunate event of a fire
    An above ground storage tank has the added benefit of being easy to maintain: all of your drainage pipes, filters and vents will be in sight and reachable.

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