1033 / 1110
Tel
0870 122 8822
Fax
0870 122 8282
Online search, specify & CAD:
www.thebluebook.co.ukCI/SfB
(74)
April 2014
Uniclass L721
5 : 17 : 1: 1
Water Saving
Water Saving
Water Saving
ideal Standard / ARMITAGE SHANKS
Introduction
Water conservation is becoming a growing issue with both domestic and commercial properties. On average
we individually consume around 150 litres of water per day of which 63% comes from the bathroom.
In areas such as the South East a growing population coupled with changing weather patterns means there is
less water per person than Istanbul.
There are a number of water saving schemes and regulations and the primary ones are summarized below.
Product Areas
WC Flushing
Most of our WC’s offer a low dual flush cistern which uses just 2.6 litres of water for low flush and 4 litres for
high. Delay fill cisterns conserve even more water by ensuring the tank only re fills once the tank has been
completely emptied Average domestic savings on a 4/2.6 flush WC = 49% vs a 6 litres WC.
Showering
Shower heads are normally fitted with 8 litre per minute water regulators, ensuring a consistent efficient
shower. Average domestic savings on an 8 ltre per minute shower head is 43% vs a typical unregulated head
at 14 litres per minute.
Bathing
A combination of cleverly designed shapes and lower overflows provide some very water efficient baths.
A 139 litre capacity bath will save around 17% of water vs an average 180 litre bath.
Brassware
Most Brassware are fitted with 5 litre per minute flow regulators. Average domestic water saving = 45% vs a
typical unregulated mixer at 10 litres per minute.
Urinals
Urinals account for a high % of commercial washroom water usage. A single urinal can use around 87,000
litres per year and still meet water regulations.
Water Saving Schemes & Regulations
Part G of the Building Regulations
Covers provision of efficient fittings and fixtures
•
Aim to Prevent undue consumption
•
Applies to Residential New Build and Conversion to Dwellings only
•
Covers sanitaryware and white goods
•
Grey and rain collection and recycling systems.
Key requirement is to ensure that the overall consumption of water in a house does not exceed
125 litres per person per day.
This is worked out using a Water Efficiency Calculator into which manufacturers sanitary and kitchen fixtures
and fittings water usage is added to arrive at a theoretical household water consumption per person.
The calculator is the same one used for the code for sustainable homes. Builders must complete Part G to
achieve planning sign off.