Water Use and Conservation in Your Buildings
Where Should My Buildings Be Performing?
Water Use Benchmarks
Here at WegoWise we track a lot of water data and we like to occasionally dig into the numbers and let people know what we're seeing. To assess water performance in a building in a simple, quantifiable way, our preferred metric is number of gallons a building uses per bedroom per day. Ideally, we would like to look at water use per person but we have found that number of people is a tough number to keep track of for building managers so number of bedrooms is a good proxy and stays fixed over time.
Here is a quick and dirty breakdown of what we've found in our water data. One caveat: these benchmarks are only for indoor water use and do not include potable water use in irrigation systems. We're still working on benchmarks for irrigation meters.
|High Performing Building||< 60 gal/bedroom/day|
|Average Building||60 - 120 gal/bedroom/day|
|Poorly Performing Building||120 - 200+ gal/bedroom/day|
How Much Money Can I Save by Investing in Water Conservation?
The short answer is a ton. Of all the ways to save money in a building, water upgrades have some of the lowest first costs and a simple payback as short as a few months.
We have seen more than a few projects cut their water bills by 50-60% by replacing leaking toilets with better performing, water conserving toilets, and installing low-flow shower heads and faucets.
If you do a quick calculation and find your building falls in the "poorly performing" category from the above table you should start looking into getting a water audit and making some upgrades right away. Water conservation is the "no-brainer" of green upgrades in any poorly performing building.
Some quick links:
A friend of WegoWise is installing this toilet in her home soon and we'll post a review in a few weeks about her experience with it. At .8 gallons per flush, it's supposed to be the lowest flow toilet you can buy.