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Rainwater Harvesting Overview

Re-use the rain and save your money and the planet

Rainwater Harvesting Overview

Rainwater Harvesting is quite simply rainwater captured via your existing guttering and drain-pipes. The rain water is then filtered and stored in above or below ground tanks for later use.

When you need the water, it is pumped from the tanks rather than using mains water.

The water can be used for:

  • Flushing Toilets
  • Washing Machines
  • Dish Washers
  • Watering Gardens
  • Car Washing

Rainwater is not suitable for bathing and showering.

Increasing water demands combined with drier summers are exceeding the availability of mains water, and as such water costs are soaring.

Rain water collected from your roof is clear and clean looking, it only becomes “dirty” looking when it meets the ground.

Rainwater Harvesting can supply all of your non-potable water requirements; however how much you harvest is limited to the size of your roof areas, the volume of annual rainfall, the size of your system, and your water demand.



The average house can harvest 64,000 litres of rain water a year from their roof…that’s 213 water butts! The average person uses around 18,000 litres of water per annum just to flush toilets and wash clothes,

That means as you re-use your rainwater you save money and you save the environment.

Rainwater harvesting is a logical choice.



There is currently no funding or grants available for domestic Rainwater Harvesting Arvesting systems. There are no financial incentives similar to the FiT or RHI for Rainwater Harvesting Systems. The savings are purely from reduced water bills.

Farmers may find funding for agricultural schemes through their local Regional Development Agency (RDA) and businesses may receive an Enhanced Capital Allowance (ECA) which allows businesses to claim 100% of their first year capital allowances on investments.

EEA Regional Award winner EEA National Award winner EEA National Boiler Award winner MCS Elecsa REC FGAS BPEC Green Deal