F.A.Q rain water harvesting


Frequently Asked Questions

Rain Water Harvesting

Q: What do I gain from having a rainwater harvesting system?

Nearly 30% of water usage is just for flushing toilets. That is a massive amount concidering we do not touch or drink that perfectly clean water. So why do we use it for flushing toilets!

Rainwater harvesting systems are basically recycled water systems from the rain water. It is a system which stops mass water wasting. When it rains, that rain hits the floor and penetrates the ground on its way down to the aquifer. This process can take weeks or even months and most of the time the rain that hits your roof goes down a drain and not into the ground.

The best thing to do is catch that rain and store it for use at a later date.

Q: What can I do with the water?

Everything except drink or consume it. Main things are filling toilets, washing cars, watering the garden and general irrigation usage. It can be used for washing machines and dishwashers however if for use in a dishwasher you may need to filter and purify the water before it can be used for this purpose.

Q: Will it help me?

The short answer is yes - massively so.
If you think of your water bill per year. Now take 30% off that bill and you have a pretty good reason to think about a rain water harvesting system. That is just for the flushing toilets part let alone being able to water the garden in a hose pipe ban.

Q: How does a rainwater harvesting system work?

With the amount of rain we get here in the UK it is a real shame the most of that hits our roofs goes down a drain and we get charged for it.

A tank is usually buried somewhere (this can be a small one which then pumps to a large above ground tank) depending on the space and amount of water you wish to store. The tank is then connected to your roof down pipe/s and an overflow is connected from the tank to a drain or land drain.

Then we install a constant pressure pump into the tank which connects to either a plumbing system which feeds toilets or to a standard outside tap which can be used for irrigation.

Once you open the tap the pump turns on automatically and then once you close the tap it turns off automatically. Maintenance and hassle free.

Q: How much does a rain water harvesting system cost?

Well You knew I was not going to be able to answer that one because each site/property is different and each system is different however you should expect a starting price of £2000 for a tank, pump, pipework installation and this can go up depending on the size of tank, pump and the plumbing required.

There is also the diy kits which start at just £80 and include a water butt and downpipe connector. Diy kits are a great starting point and the diy kits can range in size upto £1000.