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Rainwater Harvesting Systems

Collect, Store and Use Rainwater Effectively

Rainwater Harvesting Systems

Rainwater Harvesting

Rainwater harvesting is a sustainable solution to collect, store and use rainwater as an alternative or complementary source to mains water. Alton Pump Services are the South’s leading installer of rainwater harvesting pumps. We design, supply and fit pumps for your storage tanks to provide access to the reservoir of water. Rainwater harvesting systems have become increasingly popular in recent years and make ecological and economic sense. Our range of pumps are suitable for above ground and below ground applications.


Harvested rainwater can be used for watering the garden, toilet flushing, irrigation, vehicle washing, or even drinking. However, it is important that the rainwater system is maintained properly and the water quality is appropriate for the intended use. Regular maintenance of your rainwater harvesting system will help keep it running efficiently and reduce potential algae growth which can contaminate the stored water.

How Do Rainwater Harvesting Systems Work?

Rainwater harvesting (RWH) is the process of the collection and storage of rooftop or surface run off rainwater. The rainwater harvesting system has three main roles: catchment, conveyance, and storage.

Rainwater is ‘caught’ from rooftops or ground surfaces and is channelled (conveyed) and redirected to a tank, cistern, well, shaft, borehole or aquifer for storage, or a reservoir with percolation. The conduits are pipelines that carry the rainwater from the catchment area to the harvesting system. The collected rainwater can then be stored for use or recharged into the groundwater. Depending on its intended use, the rainwater may require treatment.

Rooftop collection
A common method for rainwater collection, roof surfaces provide the ideal collection area to channel rainwater.

Ground surface collection
Large paved areas or hard standings offer a suitable platform to collect surface runoff.

Conveyance systems
Water is channelled from the collection area via gutters, channels, and pipe systems to the storage system.

Rainwater can contain contaminants, and during the collection process can also pick up sediment, plant material and other debris washed from the collection surface. Typically rooftop catchment provides less contamination than ground surface catchment. Treatment may include filtration to remove particulate matter and chemical disinfection to control microbial growth.

Storage systems
Storage systems in a domestic environment are typically tanks, either on the surface or below ground.

Rainwater Harvesting System

What Are The Benefits Of Rainwater Harvesting?

  • Reduce water bills.
  • Reduces potable water consumption.
  • Improves the quality and quantity of groundwater.
  • Easy to maintain.
  • Suitable for irrigation.
  • Supplemental water supply in drought.
  • Reduces floods and soil erosion.

Methods Of Rainwater Collection

There are many ways to harvest rainwater, from the basic to the complex. The most important consideration is what you will use the water for. That will determine the filtration level and monitoring it needs, and how complex and your system will be. Rainwater can be harvested by a number of systems:
  • Direct-Pumped (Submersible)
  • Direct-Pumped (Suction)
  • Indirect Gravity
  • Indirect Pumped
  • Gravity Only

Alton Pump Services supply a range of pumps suitable for rainwater harvesting systems, including groundwater submersible pumps, and pressure booster pumps. Talk to our team today to discuss your requirements for a cost effective environmentally friendly solution on: 01420 561661



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Get In touch Today. Call: 01420 561661