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1800 Litres Direct Pressure Underground Rainwater Harvesting System

1800 Litres Direct Pressure Underground Rainwater Harvesting System
1800 Litres Direct Pressure Underground Rainwater Harvesting System 1800 Litres Direct Pressure Underground Rainwater Harvesting System 1800 Litres Direct Pressure Underground Rainwater Harvesting System 1800 Litres Direct Pressure Underground Rainwater Harvesting System 1800 Litres Direct Pressure Underground Rainwater Harvesting System 1800 Litres Direct Pressure Underground Rainwater Harvesting System 1800 Litres Direct Pressure Underground Rainwater Harvesting System
Product Code: GU1800DPS

£1,750.00 (ex. VAT)

£2,100.00 (inc. VAT) 2100.00

UK Mainland Delivery: £120.00 + VAT
Delivery: 3-5 working days

Product Description

This complete 1800 litre direct pressure rainwater harvesting system is ideal for collecting and storing rainwater to use in your home for tasks such as flushing the toilet, washing clothes or washing dishes. The 1800 litre system is suitable for smaller installations such as a 2 bedroom house.

The Direct Pressure system works by supplying water directly to the point of use, for example when a toilet is flushed the pump starts running and rainwater from the tank is pumped to refill the cistern. The pump automatically stops once the pressure in the pipework has been restored. Should the rainwater in your tank reach a low level, a small amount of mains water is sent to the rainwater tank, therefore leaving maximum capacity available for the next rainfall.

This system includes:

  • 1800 Litre polyethylene tank 
  • Pedestrian rated telescopic neck with lid
  • Push fit DN 100 drainage connections
  • Pre-fitted Compact filter with calming inlet
  • Submersible pump

1800 Litre Tank

The tank is manufactured in the UK from virgin Polyethylene and is used mainly for storing harvested rainwater, however it can also be used for storing water from other sources such as springs and wells.

The ribbed design provides added strength and allows for environmentally friendly pea-gravel backfills, eliminating the need for concrete bases and backfills to be used in most installations.

The tank has been designed to ensure optimal strength and is shorter in height compared to other tanks on the market today. This means that a shallower hole is needed to accommodate the tank (this can be as much as 500mm less).

The tank features a large 600mm access which allows for inspection and maintenance of the tank and its contents.

The telescopic neck and lid push fits into the neck of the tank and a rubber seal towards the bottom ensures a tight fit. The telescopic part of the neck can be extended by up to 300mm and can be tilted in any direction by up to 5 degrees.

In-Tank Filter

As standard, a compact filter is pre-installed into the neck of the tank. The filter removes leaves, grit and other debris from the rainwater passing through. The filter requires very little maintenance, usually about 3-4 times each year and is very quick and easy to clean with no consumables, just lift, rinse and replace.

The compact filter is suitable for roof areas up to 150m².

Submersible Pump and Controls

The pump delivers approximately 4 bar of pressure and up to 3500 litres/hr of flow and is automatically started at the point of use. The pump also has dry run protection as standard.

The pump is suspended from a pre-fitted hook in the neck of the tank by a stainless steel chain which allows the pump to be lifted out for maintenance. A large handle allows easy lifting when necessary.

Each system is supplied with the filter, calmed inlet and drainage connections pre-fitted inside the tank. Also supplied are all non-standard plumbing fittings, a roll of 32mm MDPE (15 metres), marker tape and ID packs.

Important Delivery Information

Please note the delivery price quoted is for delivery to an address in England or Wales. Deliveries to Scotland, Northern Ireland and offshore islands may incur a surcharge. Please contact us for additional delivery charges to any of these locations.

Delivery is made via a pallet service with a tail lift, and once unloaded from the delivery vehicle, it is the customer’s responsibility to move the tank.

Tank Specifications

Capacity - Litres 1800
Length - mm 2080
Capacity - Gallons 395
Width - mm 1260
Height - mm 1250
Construction Material Polyethylene
Weight - kg 75

Product Downloads

Rainwater Harvesting FAQ's

What is rainwater harvesting?

Rainwater harvesting is the collection of rainwater directly from the surface or surfaces upon which it falls. This water would otherwise have gone directly into the drainage system or been lost through evaporation and transpiration. Once collected and stored, the rainwater can be used for non-potable applications such as toilet flushing, garden watering and washing clothes using a washing machine.

Why should I consider a rainwater harvesting system?

Despite the common perception that it rains a lot in England and Wales, water resources are under pressure. Demand for water is rising due to the increase in the population, changes in lifestyles and due to the impacts of a changing climate.

In the South East of England, where large numbers of people live and work, water is scarcer than anywhere else in England and Wales. In fact there is less water available per person in this region than in many Mediterranean countries.

What savings can be achieved by using a rainwater harvesting system?

Any rainwater harvesting system will reduce your dependence on the mains water supply.

Potential savings should be assessed on an individual basis before any system is implemented. Factors which will influence this are; the demand for non-potable water, the amount of rainwater that can be collected and whether the property is charged by volume of volume used.

Savings will be higher in commercial/industrial buildings and schools. This is due to these types of buildings having much larger roof areas and a much greater demand for non-potable water compared to private dwellings.

Financial savings are usually higher when a system is installed during construction of the premises as retrofitting a system can be expensive as well as disruptive.

What are the benefits of using a rainwater harvesting system?

A rainwater harvesting system will reduce the demand for mains water and relieve pressure on available supplies. Reducing the volume of mains water supplied means that less water is taken from lakes, rivers and aquifers and more is left to benefit ecosystems and help sustain the water environment.

A rainwater harvesting system can also reduce the risk of flooding and pollution as less rainwater is discharged to drains and sewers and, ultimately, to rivers. They can contribute to slowing down the flow of water and reduce the pressure on drainage systems in times of high flow.

How much water do I need to store?

The tank is often the most expensive part of the system and choosing the right size is key to minimising costs. The tank size needs to be a balance of cost and storage capacity. The tank should also overflow at least twice a year to flush out floating debris.