Why Replace Your Toilet?

Generally, toilets use about 30% of the water used by a household.
Based on a family of four and four flushes per person per day:

Flush Volume

  

Water Use per year

20L

116,800 L

13L

75,920 L

6L low flow

35,040 L

4L

23,360 L

3/6L dual flush

25,930 L

Based upon the water and sewer rates in effect as of May 1, 2007,
the annual water bills for the toilets listed above would be:

Flush
Volume

  

Water & Sewer Cost per year

20L

$248.39

13L

$161.45

6L low flow

$74.52

4L

$49.68

3/6L dual flush*

$55.14

* based on Dual-Flush Toilet Testing completed
by CMHC (Technical series 02-124)

Payback Periods based on replacing a 13 L Toilet

Based upon the water and sewer rates in effect as of May 1, 2007, the following tables present the estimated payback periods for installing replacement toilets. The payback period represents the length of time it will take the user to save the amount of money that was spent on the purchase of the toilet.

 

New Toilet

Original Toilet

 

6 L

Dual Flush

4 L

13 L

Price of Toilet

$90 to $3100

$270 to $800

$160 to $1500

 

Savings in L
per year

40,880 L

49,990 L

52,560 L

 

Savings in $
per year

$86.94

$106.31

$111.77

 

Payback in years

~ 1 to 36 years

~ 2.5 to 7.5 years

~ 1.4 to 13 years

Payback Periods based on replacing a 20 L Toilet

Based upon the water and sewer rates in effect as of May 1, 2007, the following tables present the estimated payback periods for installing replacement toilets. The payback period represents the length of time it will take the user to save the amount of money that was spent on the purchase of the toilet.

 

New Toilet

Original Toilet

 

6 L

Dual Flush

4 L

20 L

Price of Toilet

$90 to $3100

$270 to $800

$160 to $1500

 

Savings in L
per year

81,760 L

90,870 L

93,440 L

 

Savings in $
per year

$173.87

$193.24

$198.71

 

Payback in years

~ 6 months to 36 years

~ 1.4 to 4.1 years

~ 10 months to 7.5 years

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