Rain Water

This involves what is all too often called 'Rain Water Saving' when all the estate agent means is that the water from a part of the roof is collected in a rain water butt for use in the garden. This means that most of the water over-flows and is lost in an already wet garden. However, this water can be used for several different purposes in the house.

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  • To get a reduction on one's mains water bill, rain water should be collected from the whole roof and not just one aspect of it. It must also be used in such a way that it does not end up in the storm drains operated by the Water Supply companies. i.e. it may be allowed to soak away through garden and fields to join the nearest river system as it would if the house were not there. However, use of water from the roof, in the home, will save on the volume of water being supplied through the mains meter.
  • This rain water can be plumbed into the flushing system for the toilet(s), so that only when the weather is very dry will the toilet use the mains water for flushing.
  • Rain Water may be used for all bathroom uses, except washing of teeth - unless boiled. The only reason for not using it in the mouth is that: some bird diseases are zoonotic i.e. they can infect humans; since birds perch on roofs, there is a remote possibility that pathogens might be washed off by the rain and into your domestic rain supply. In general rain does not contain toxic amounts of pollutants and is free of chlorine except for the small amounts taken up from the sea.

Farm & Industrial Use

  • Water can be collected from all the roofs, stored in a tank, and used for washing down yards, or other surfaced areas, as well as machinery.
  • Rain water is soft as it has not passed through any rock strata; therefore, it will not cause furring up of pipe work, nor leave deposits on containers.
  • Rain water may be combined with the normal disinfectant and used to wash down Milking Parlours etc. It can be safely used for livestock drinking bowls and water tanks, though not for housed poultry. Water in wells and streams has been well filtered by rocks and/or soils; therefore, it is very unlikely to be contaminated and any pathogens that do get picked up are very unlikely to be sufficiently concentrated to cause disease.
  • It should not be used for veterinary work because of the risk of contamination by bird pathogens.
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  • Results of Rainwater saving in UK 2013

    for me the use of rain water from the water butt in the garden - 0.77 cu.m from a roof area of 27.72 sq.m at 45° facing south - has meant that in the last quarter my bill fell to a consumption of only 1 cubic metre from the water mains!

    This water was used to flush the loo - albeit by use of a bucket, since I am not at liberty to alter the plumbing of my rented house; wash in (checked under the microscope nothing live showed, just microscopic bits of roof tiles! and to water the house plants and vegetable seedlings in the garden.

Please mention TigerGreen whenever you contact any of our linked Top Providers, Suppliers and Contractors.