Your household water meter reads in cubic metres, and displays your total consumption to the nearest tenth of a cubic metre, much like the odometer in your car measures total distance traveled. Every 0.1 cubic metres (100 liters) of water consumed causes the sweep hand (see picture) to make one complete revolution and the measured total to increase by 0.1 cubic metres. (Black wheel on odometer.)
Monitoring Water Use
You can calculate your water consumption over a period of time by taking the meter reading at the beginning and end of the period. The difference in the readings is your consumption for that period.
Calculating Water Use
You can calculate how much water various activities and appliances use in the same way. Record the water meter reading before and after the activity, and take the difference. Make sure that all other water use in your home stops while you're doing the activity, or the volume that you calculate will be incorrect for the activity that you were testing.
Useful Links:
Lenntech Water & Air Treatment Systems
GLI International, Inc.
