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Rain Water Harvesting
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England has less water available per person than most other
European Countries and climate change is forecast to have a two-fold
impact on water resources. It will reduce the amount of water available
for public supply and it will increase customer demand for water,
particularly in the garden. Recently water demand has started to exceed
supply and localized flooding is becoming an issue by making small changes
to our behaviour we can ensure a sustainable water supply for the future. The Government in 2006 gave water companies the right to
compulsorily meter all of its customers with the implementation of new
legislation. This 'area of water scarcity' status means the water company
will be able to accelerate its plan to switch existing customers over to
water meters. Previously, the decision to install a water meter was
voluntary, however with the introduction of this new legislation,
customers will soon have no choice.
Rainwater harvesting is the collection of water from
roofs for reuse in homes and businesses it can greatly reduce the amount
of mains water used and the cost to the consumer. Rainwater collected is
diverted via existing guttering, filtered and collected in above or below
ground storage facilities and pumped to a point of use e.g. garden or for
car washing.
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With a rainwater harvesting system, a typical household
can expect to save around 50% of their mains water needs (see usage
chart). Secondly the inclusion of a rainwater system can help with water
related issues during the planning process. Thirdly, in more remote areas,
rainwater can be upgraded to fully drinkable standard (potable), by using
non-chemical ultra-violet sterilisation.
There are three standard tank sizes to choose from, with
larger tanks available if required. Our polyethylene tanks, are so strong
that concrete backfilling can be eliminated in most installation. This
results in significantly reduced installation costs. With push-fit
connections (110mm) and specifically manufactured for rainwater storage,
this tank is specialist without being complicated. This is ideal for both
self-builders and professionals alike.
Dome & cover
This feature replaces the requirement to build a brick
access chamber or the need to purchase separate manhole covers. Which
ensures an easier installation.
Filter
The cross-flow filter is housed in the neck of the tank
for easy installation. With an efficiency of around 90% and a simple
low maintenance routine, making this filter the optimum choice. When
the system is on overflow mode, the filter is automatically cleaned.
An inspection of the filter and cleaning should be done every quarter, to
maintain the efficiency of the system. The procedure is a simple 5
minute job.
Plan view of the filter inside the tank
Submersible pump
We have a range of pumps, which are of a high
specification and are proven in service to deliver reliable performance.
The standard pump delivers 4,500L/Hr at 4.55 Bar. With a service rating of
30 starts per hour for 10 years.
Control system
The Freerain controls are fully WRAS certified and come
complete with a fully compliant automatic mains water top up system. They
are supplied preplumbed and pre-wired to ease installation.
Optional extras, upgrades and specialist components
For larger dwellings and/or "off the grid" living
rainwater can be upgraded to full drinking standard with the use of a
combination of carbon filtration and ultraviolet sterilisation.
Pumped overflow systems can be designed to help where
the overflow method ie storm drain is a level higher than the tank
overflow
Rainwater system Prices Excluding VAT
Domestic underground whole house systems
System Size in Litres
(Approx) |
Component Supplied
Cost |
House Size |
| 2,400L System |
£2145.00 |
2 Bedroom |
| 3,500L System |
£2245.00 |
3 Bedroom |
| 4,700L System |
£2545.00 |
4 Bedroom |
| 6,500L System |
£2695.00 |
5/6 Bedroom |
Domestic underground based irrigation (external use
only) systems
System Size in Litres
(Approx) |
Component Supplied
Cost |
| 2,400L System |
£1795 |
| 3,500L System |
£1895 |
| 4,700L System |
£2145 |
| 6,500L System |
£2345 |
These prices are for supply only, installation costs
vary and a site survey is required, please ask for a quote before
ordering. |