Bathroom Revamp: Savings by the Gallon
From our toilets to our tubs, roughly 60 percent of a home’s water
consumption takes place in the bathroom, according to the California
Urban Water Conservation Council. So if you have an eye on water use,
start here.
What Do I Buy?
Water-Saving Toilets
Guzzling 27 percent of your household supply every year, your toilet
is by far your home’s largest water user. The Federal government now
mandates that new toilets use no more than 1.6 gallons per flush, but
older toilets can use two to three times that much. And even the new
ones will use more if you don’t maintain them.
When buying a toilet, look for the U.S. Environmental Protection
Agency (EPA) ’s WaterSense label. To receive the label, toilets must be
independently tested to show that they use, at most, 1.28 gallons per
flush (gpf). Dual-flush toilets, those that have a full-flush mode for
solids and a reduced-flush mode for liquids, use 1.6 gpf and .8 gpf
respectively. And if you want to go as green as possible, there are
composting toilets, which break down human waste into a nutrient-rich
material that can be spread around trees and non-edible plants.
What Else Can I Do?
Maintain the toilet you’ve got.
A 2000 study commissioned by the city
of Tucson revealed many 1.6-gallon toilets had been modified by
homeowners or plumbers. "Early-close flappers," devices that prevent the
water tank from releasing more than 1.6 gallons, had been replaced with
standard 3.5-gpf flappers, and dams, which let in more water.
If you’ve moved into a home with a 1.6-gpf model, there’s no way of
knowing whether the previous owner made any such inefficient
modifications. As the parts wear out—they generally last around five
years—be sure to ask specifically for 1.6-gpf replacements.
Most older homes (pre-1992) still have 3.5-gpf toilets. If yours
does, you can reduce the water it uses by filling a milk jug with stones
and placing it in your toilet tank to displace water. But be wary of
toilet-tank retrofits, kits designed to convert old 3.5-gpf models into
1.6-gpf toilets, says Gary Woodard, co-author of the Tucson study.
"You’re doing something to the toilet that it isn’t really designed
for," he says. "It’s really best to get a low-flow toilet."
What do you save?
By replacing 3.5-gallon toilets with 1.6-gallon or less models, the
average family of four would save about 14,000 gallons of water per
year.
How important is this?
The combination of population growth, increased use, and climate
change are making fresh water a critical issue for our times. You won’t
save much money by saving water, but you will be making a big
contribution to your community and to the planet—depending on where you
live, wise water use may be the only way your region will continue to be
habitable.
Showerheads
Showers are rife with opportunities for waste, thanks to the rise in
popularity of multi-head shower systems, some of which spew an
astonishing 80 gallons per minute (gpm). The bane of water
conservationists everywhere, these multi-head showers end-run the
federal standard that requires showerheads to pump out no more than 2.5
gpm by utilizing a dozen or more of the 2.5-gpm models.
What Do I Buy?
First, measure the water consumption of your current showerhead. Pour
2.5 gallons into a bucket, mark the water level, then empty it. Then,
put the bucket under the shower and run the water for exactly one
minute. If the water goes higher than the mark, get a new showerhead.
There are low-flow showerheads of every type, ranging in price from less
than $10 to $100 or so. And while you’re at it, buy a 1.5-gpm aerator
for your bathroom sink faucet. For less than $4, you’ll save another few
hundred gallons a month.
Water heaters: If major purchases are in your
budget, consider a tankless, on-demand water heater. Households waste
6.35 gallons of water per day waiting for hot water, according to the
Lawrence Berkeley National Laboratory, and 3.48 gallons of that is for
showers alone. Tankless systems heat water when you need it, cutting
wait times down to about 30 seconds and saving energy as well as water.
What Else Can I Do?
Change your expectations a bit. A water saving shower isn’t going to
be like standing under a warm Niagara Falls, but it will be nice and hot
and get you clean. Keep a clean bucket in the shower to collect the
water that runs while you wait for it to get hot (your houseplants or
garden will thank you), and keep the whole process to 5 minutes or less.
And don’t succumb to the temptation to modify the flow restrictors in
the 2.5-gallon showerheads.
How much do I save?
By replacing a 5-gpm showerhead with a 2.5-gpm model, you’ll save
7,300 gallons of water per year. Cut your eight-minute showers down to
five minutes, and you’ll save another 2,738 gallons.
How important is this?
Using less hot water saves money, greenhouse gas emissions, and, of
course, the water itself. This is a change well worth making.
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