Spend $100 now and SAVE $15 each year... ROI = 15%
Switching over to water-efficient plumbing fixtures could save an office of ten employees as much as $50 to $100 a year on water and wastewater bills. Due to the new low-flow toilets, Americans save over $11 million everyday on their water bill. Older toilets typically used up to 7 gallons per flush, and then they 'evolved' to a more efficient 3.5 gallons per flush, and then to 1.6 gallons per flush.
The new 'Low Flow' or 'High-Efficiency' toilets only use about 1.3 to 1.6 gallons per flush, and save you between 8,000 and 20,000 gallons of water per year, per toilet over the 7 gallon models and save about 3,200 gallons relative to the 3.5 gallon models. You can also consider dual-flush toilets with an option for a light 0.9 gallons / heavy 1.6 gallons. However, the dual flush are more expensive units starting around $300.
The ROI Calculation is based on two toilets; one each for the men's and women's restroom. The typical low flow toilet costs about $180 and a 'Low Flow' water efficient 1.3 gallon toilet will go for around $230, with water costs at about $1.50 / 1,000 gallons. Urinals play a role in the calculation for the men's room and with a blended average of one to two flushes per day for ten employees, it adds up to 20 total per day, 100 per week, 400 per month and 4,800 per year. At a savings of 2 gallons per washing, you would save a total of 10,400 gallons. At $1.50 per 1,000 gallons the water savings is just over $15 per year.
Please note that this calculation factors in the delta between the typical cost and the high efficiency cost, so if you are not already planning on replacing your office toilet, then the payback is significantly longer. Since this may be the case more often than not, we recommend a new retrofit product that reduces the flow levels at a hard cost under $20. The installation is relatively straightforward.
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