Rainwater Harvesting Systems

If you’re looking to cut down on your water bill and help out the environment in the process, you might want to invest in a rainwater harvesting system, and you won’t need to look any further than the range we have at EasyMerchant.

Rainwater is an underutilised tool for your garden that can be used for gardening and cleaning, and once you have a high capacity rainwater harvesting system, you won’t need to spend a penny on water for these chores again. If you have any more questions about how you can make the most of one of these systems, feel free to phone or email our customer service team with your queries

More Information on Rainwater Harvesting: What Exactly is Rainwater Harvesting, Anyway?

Before delving further into the topic, lets first understand what rainwater harvesting is. Well, rainwater harvesting is a method of collection and storage of rainwater into tanks or natural reservoirs. One common method of rainwater harvesting is rooftop harvesting.

Usually when it pours the rainwater decants off your roof, and runs off into your street or yard. With rainwater harvesting your rainwater is collected in cisterns or water storage tanks and stored for future use.

Basic Components A Rainwater Harvesting System Must Include

Regardless of its intricacy, a rainwater-harvesting system will have the following five essential components:


The surface, which directly receives the rainfall and provides water to the system is called catchment area (usually calculated in square metres). This could be a landscaped area, a rooftop or a paved flooring surface.

Downtake Pipes and Gutters

Directs the water from the catchment area to the storage tank.

First Flush Devices and Filters

Filters get rid of dirt, leaves and grit that the rainwater might transport from the catchment surface, before the water enters the storage tank.

First flush devices are valves that ensure flushing out of first spell of rain, which carries a lot of pollutants from catchment surfaces and air.
Storage tanks

Storage Tanks

They can be below the ground or above ground.

Delivery Systems

Pipe systems that carry the stored harvested water till the point of end-use.
It’s not advisable to use harvested rainwater for dishwashing, cooking or drinking unless water quality issues are confirmed and necessary treatment or purification systems set up.

As authorised suppliers EasyMerchant Offers the full Harlequin HydroStore range so you can order whatever system you need:

HydroStore Rainwater Harvesting System

Garden Harvest: A very simple system that allows the connection of a hose within the tank to provide water for irrigating lawns, gardens, and car washing.

Home Harvest Direct: When the 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.

Home Harvest Gravity: By using the Rain Director system, rainwater is pumped to a header tank where gravity distributes it to the water appliances. This minimises wear on the pump and pump on/off cycling, reducing energy consumption. The system ensures that the rainwater tank is replenished with mains water once the stored rainwater is exhausted.

With water being a valued commodity, rainwater harvesting system installations has increased over the years. There're various advantages to saving rainwater in a rainwater harvesting method. The most important one being the saving made on metered water costs that can see up to 50 percent savings. Additional benefits to harvesting rainwater include contributing to reduced flood dangers and reducing the load combined sewer overflows improving river water quality.


Why harvest rainwater?

Nowadays, scarcity of good quality water has become a major cause of concern. Though, rain water that is pure and of good quality is lost as run off.

Is harvesting rainwater illegal?

The government doesn’t have any limitations on rainwater harvesting. Though some minor regulations exist regarding the means by which it’s collected, the government permits citizens to collect rainwater and even encourage it.

What is the typical household water usage?

It's estimated that 54% of the water used in the home could be replaced by using rainwater that was harvested. This includes water used for toilets, washing clothes, and watering the garden.

What size rainwater-harvesting tank should you buy?

Our Harlequin HydroStore range comes in 6 different capacity sizes, large, shallow, and multi-tank options. It is crucial to choose the size of the tank for your needs. Visit our 'What size of tank? Page to work out what size of tank you need.

Call Us To Discuss Rainwater Harvesting System

Once you come to a decision it’s time to invest in a Rainwater Harvesting System, we have all you need. EasyMerchant has the widest range of products in the industry at affordable prices.

Free delivery is available on all orders over £120. Feel free to create an account when placing your order.

picture of Harlequin HydroStore Rainwater Harvesting Systems logo