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High Household Consumption
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Cost Of Leaks
• One leak toilet can fill 28 bathtubs per month!!!
• Assume a 150 litre (40 gallon) tub X 28 tubs = 4.23 M3 (1,120 gallons) per month
or 50.8 m3 (13,440 gallons) per year
• Research shows that a leaky toilet can accont for almost 30% of
all indoor water use
• a dripping leak consumes 0.5 m3 per day / 1.7 m3 per month
• a 1/32 in. leak consumes 1 m3 per day / 30 m3 per month
• a 1/16 in. leak consumes 3.6 m3 per day / 108 m3 per month
• a 1/8 in. leak consumes 14.4 m3 per day / 432 m3 per month
• a 1/4 in. leak consumes 56.7 m3 per day / 1,729 m3 per month
• a 1/2 in. leak consumes 230 m3 per day / 6,916 m3 per month
Comparing and rating low-flow toilet models
Household Toilet Water Use Calculator
The following tables will give you an idea of toilet flushing costs for an average family of four and a single occupancy household:
Family of Four Annual Toilet Use/Costs
Toilet Flush 20 Litre 13 Litre 6 Litre Dual Flush
Annual Water Use 116,800 77,088 35,040 26,280
Annual Water Cost $213.28 $140.76 $63.98 $47.99
Single Occupant Home
Toilet Flush 20Litre 13Litre 6Litre Dual Flush
Annual Water Use 29,200 19,272 8,760 6,570
Annual Water Cost $53.32 $35.19 $16.00 $12.00
Selecting a toilet suitable for your family needs
The more people you have in your home the more water you will save by installing a low-flow toilet
• Replacing a 20-litre with a 6-litre toilet would save a family of four close to $150 per year.
• The environmental benefits of installing a new 6-litre toilet would be immediate.
• The money spent on a new 6-litre toilet would have a payback period of around two years or less (based on a $300.00 toilet cost) | |
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