Rainwater Harvesting Systems

Rainwater harvesting is the accumulation and deposition of rainwater for reuse on-site, rather than allowing it to run off. Rainwater can be collected from many places, such as roofs, and collected for use later.

H2O comply offer complete care, maintenance and repair to ensure you continue to see the benefits of these systems.

Why Rainwater Harvesting?

Irrigation System

Reduce mains water usage, saving on household bills, by replacing daily functions such as:

  • Doing the laundry.
  • Flushing the toilet.
  • Heating for the house.
  • Watering the garden.
  • Washing the car.
  • Pressure washing.
  • Irrigation.
  • Water for livestock.

Rainwater harvesting provides a water supply during regional water restrictions and is often used to supplement the mains supply. It provides water when there is a drought, can help mitigate flooding of low-lying areas, and reduces demand on the water supply to your building.

Methods of Rainwater Harvesting


Water Butts

Water Butts are simple to install and very common in gardens across the U.K. They are used to store water collected from a gutter across a roof.

Feed Systems

Gravity feed systems are typically positioned at the top of the building. Rainwater is collected off the roof and fed directly into the filter system of the tank. Pump feed systems are generally installed on the ground and distributed via a pump.


Guttering is a great way to collect water as it already catches the water running off of the roof. This water supply can be redirected into a storage system to be used later.