Reducing water use by your toilet without affecting efficiency

Flush-wiser™ by Salamander Engineering

All pre-2001 toilets hold between 7-9 litres of water depending upon age. To effectively flush, you only need to use 6 litres of water.

The devise pays for itself in less than 5 months, based on average water savings by reducing the amount of water per flush from around 9 litres per flush to just 6 litres per flush. Every person in the UK uses 150 litres of water a day and 60 litres of this are used on toilet flushing.

 It works by allowing your cistern to fill with air rather than water, 'conning' the system into 'thinking' it's full with water. Because the Flush-wiser™ is fixed to the siphon, it doesn’t interfere at all with the toilet's flushing mechanism and it’s totally adjustable - with five different settings - the higher the setting, the more water you save.

For installers and householders looking to save energy, save water and save money a Flush-wiser™ is an easy choice to make. As well as saving huge quantities of water - and the costs associated with that - the costs of disposing of a cubic metre of waste water include the usage of 0.905 Kwh of electricity which produces 0.404 kg of carbon dioxide - so using a Flush-wiser™ actually helps reduce your carbon footprint too.

http://www.flush-wiser.net/

hello water: After the hassle of installing this devise which includes drilling one 7mm hole into your cistern you don´t have to think of it ever again; at least not for the remaining life time of your old toilet. This is well worth the initial effort when you consider the long-term water and consequent energy savings. You may ask why not just put a brick in the cistern for free, like the old days? The bit about not interfering with your cistern is the answer. 

In effect this is similar to aerator for your tap. (see below)

http://www.wostech.com/prdview-21.html