Rain Water Harvesting

Despite the fact that Ireland appears to have plenty of rain, our growing population and the changes in climate mean that our water resources are under pressure. Due to the large increase in the number new houses built over the last few years an increase in the demand for accessible water has caused an increased awareness between people and the environment. Reducing demand for mains water can help to reconcile these competing needs. One way of reducing demand is to use a rainwater harvesting system to provide water for domestic uses. Rainwater harvesting systems can be installed in both new and existing buildings, with the resulting water usable for all purposes except drinking. While there are no agreed water quality standards for rainwater use, rainwater is not usually disinfected, if properly collected and only used only for non-potable needs. Washing machines, and toilets etc. can be fed by untreated rainwater, but correct design and installation is vital to ensure effective results. When rainwater is used to supply a garden tap or rain water butt, care needs to be taken to ensure that the water can not be accidentally drank. The potential savings that can be made depend on both the demand for non-potable water and the amount of rainwater that can be supplied, which depends on the roof area available for collection and the amount of local rainfall. Savings achieved by rainwater harvesting systems will be greater in larger buildings, such as industrial buildings and education establishments, due to their larger roof areas and potentially greater demand. In addition to the pressures on water resources, there are concerns over rainwater drainage from urban areas. Adverse impacts on flood risk and water quality mean that our existing approach to rainwater drainage systems will have to change.

Request Call Back

  • Principles of Operation

    Rainwater harvesting is a simple technology and requires hardly any maintenance. No chemicals are needed to ensure water quality. Filtration: The first purification stage starts before water enters...

  • Benefits

    Around 50% of mains water can be replaced by untreated rainwater. Besides the advantage that the use of rainwater is free of charge, it neither has to be purified nor transported over long distances. ...

  • Control

    Conderflo Manager - Double booster pump station with multiple-staged, horizontal centrifugal pumps - Internal mains water back-up using an AA type air gap (BS EN 1717) - Max. flow rate up to 14 m3/...

  • System Design

    Correct design and installation of rainwater harvesting systems is essential for their effective operation. At Ashgrove Renewables our experienced design team provide support from detailed site survey...

  • Rain Water Harvesting - The Duplex System

    The Duplex System is the most sophisticated system. It combines all needed functions of the system in only two components: the Conderflo Manager (containing pump, mains back-up and control unit) and a...

  • Rain Water Harvesting - The Simplex Direct System

    The direct system can be used for domestic and small commercial applications. The system uses a submersible pump to supply the water directly to the various applications. In case of rainwater shortage...

  • Rain Water Harvesting - The Simplex Gravity System

    The gravity system can be used for domestic and commercial applications. The system uses a submersible pump to supply the water into the header tank which then feeds the water via gravity to the appli...