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Power Smart for Business: Using Energy Wisely in ... - Manitoba Hydro

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Water<br />

Pre-r<strong>in</strong>se spray valves<br />

Switch to energy efficient spray valves<br />

Standard pre-r<strong>in</strong>se valves flow at 11 to 15 litres<br />

per m<strong>in</strong>ute, while energy efficient “low-flow” valves<br />

use under five litres per m<strong>in</strong>ute (55 to 65 per cent<br />

less water.) An energy efficient pre-r<strong>in</strong>se valve<br />

can reduce your water and energy bills, while still<br />

clean<strong>in</strong>g dishes effectively.<br />

Toilets<br />

A toilet that cont<strong>in</strong>ues to run after flush<strong>in</strong>g<br />

can waste up to 200,000 litres of water <strong>in</strong><br />

a s<strong>in</strong>gle year.<br />

Reduce toilet water use and <strong>in</strong>stall toilet retrofit<br />

devices. Facilities may wish to experiment with<br />

various devices, such as early closure devices <strong>for</strong><br />

flappers. By us<strong>in</strong>g identical toilets, you can determ<strong>in</strong>e<br />

which will result <strong>in</strong> the most reasonable <strong>in</strong>vestment.<br />

Consider:<br />

• water saved;<br />

• ease of <strong>in</strong>stallation;<br />

• <strong>in</strong>cidence of multiple flush<strong>in</strong>g, cost, and<br />

• water saved per flush.<br />

Various retrofit devices may work better <strong>in</strong> certa<strong>in</strong><br />

brands of toilets than <strong>in</strong> others. Payback often<br />

occurs with<strong>in</strong> one year.<br />

Target toilets <strong>in</strong> high traffic areas <strong>for</strong> replacement<br />

with ultra low flow toilets (six litres per flush).<br />

If it is not obvious which toilets have the highest<br />

usage, <strong>in</strong>stall count mechanisms.<br />

Fix toilet leaks.<br />

To check <strong>for</strong> a toilet leak, put a non-toxic and nonsta<strong>in</strong><strong>in</strong>g<br />

dye <strong>in</strong> the toilet tank. Wait fifteen m<strong>in</strong>utes.<br />

If the dye seeps <strong>in</strong>to the toilet bowl (no flush<strong>in</strong>g),<br />

you have a toilet leak. The most common cause is a<br />

flapper that needs to be replaced.<br />

Determ<strong>in</strong>e flow rate of toilets <strong>in</strong> litres per flush.<br />

This may be noted between the seat attachments<br />

and the tank; or note the make, model, and year<br />

made. If toilet was made prior to 1985, it uses more<br />

than 13 litres per flush; significantly older toilets can<br />

use 20 or more litres per flush. Modern low flow<br />

toilets use six to 13.5 litres per flush.<br />

19

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