Green Building Elements

Editor’s note: Today’s final installment of Low Impact Living’s “A Thirsty Nation” focuses on steps you can take to conserve water around the home. Make sure to check out the previous two posts in this series on water use and conservation, or take a look at the whole report on Low Impact Living’s site.

What Can You Do to Reduce Water Consumption?

Improve the water efficiency of your lawn.

For many homeowners in the southern United States, lawn irrigation is likely the largest source of residential water waste. There are many things one can do to correct this.

Adjust your irrigation controller to fit your climate conditions and landscaping. This alone can produce water savings of over 30%. Some water utilities offer water audits, so check with your local water provider to see if they offer this service. Or, find experienced landscape maintenance firms in your area.

Install rain and soil moisture sensors. Many people don’t turn off their irrigation when it rains. Also, most lawns receive far more water than they actually need when it isn’t raining. Both problems can be corrected using sensors attached to your irrigation system. See examples.

Replace existing landscaping with climate-appropriate options, keeping grass to a minimum. The biggest challenge with many yards is that they are composed of plants originally from other areas with vastly different climate conditions. The typical turf lawn can use up to 40 inches of water a year or more; many climate zones in the US have far less than that in rainfall. What most people don’t realize is that all regions of the US have native plants that are beautiful, durable, and adapted to local climate conditions. Some native grasses can provide the benefits of turf while requiring 1/3 of the water. So, if you really want to save water and also want to stand out on your block, cut down your turf use and rebuild your lawn using beautiful natives. Find landscape architects in your area who can help.

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Get to know this symbol because chances are it’s going to be as ubiquitous as the blue star of EPA’s other conservation program, ENERGY STAR. Launched in 2006 the EPA’s WaterSense program seeks “to enhance the market for water-efficient products and services by building a national brand for water efficiency.” Viewed mainly as a program for water-only products like toilets, faucets, and irrigation systems, WaterSense does not include appliances, like dishwashers or clothes washers, that use both water and energy – those remain under the ENERGY STAR program. In 2007, the EPA released WaterSense specifications for high efficiency toilets and high efficiency bathroom sink faucets. They also offer certification programs for several irrigation professionals, include golf course irrigation auditors. Specifications for showerheads are in the works.

WaterSense is about to become very popular in the green building community. In their proposed changes to the LEED programs, the US Green Building Council removed some specifications for water saving credits, replacing them with, “WaterSense-certified fixtures and fixture fittings should be used where available.” It’s much easier to check for the WaterSense label than it is to gather the specifications for every fixture. Read the rest of this entry »

Editor’s note: On Monday, we published the first part of Low Impact Living’s report on American water use at sustainablog. Today’s second part takes a look at how we tend to use water excessively in our own homes. Keep an eye out for part 3, which will give you tips for reducing your water consumption, or visit LIL for the original publication of the report.

Key Causes of Excessive Water Use

There are many sources of water waste across all sectors of the economy. But, as homeowners and consumers, which ones do we have the most control over? Low Impact Living suggests you consider the following ideas when thinking about lowering your water use.

Direct Household Water Use

The typical household with three members uses over 300 gallons of water per day, both inside and outside. If you live in a warm climate where lawn irrigation is needed, then typically this is your single biggest source of waste – most lawns are over-watered, irrigated with inefficient equipment, and planted with plants not suitable to the local climate.

Inside, toilets, clothes washers and showers are the largest water users, representing 19, 15 and 12 gallons per person per day respectively (see chart to the right). There are huge inefficiencies here as well, especially in older homes. New appliances and plumbing fixtures can often shave 50% off of your water use.

All told, an average water-conserving home could cut the 300 gallon average above to less than 150 gallons with no sacrifice in comfort or performance. Specific things you can do to achieve these savings are listed below.

Indirect Water Use

In addition to the water that you use directly, you also consume water via the products and services that you buy.

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I remember reading the little placard on the bathroom vanity advising me to hang my damp towels with curiosity. We were on vacation and it was the first time I had ever heard of such a thing. We did this at home, but it seemed more practical – a way to avoid doing laundry each night. There was also a note about turning the lights out when we left our room. Little things.

We discussed the hanging of the towels and the turning off of the lights over a shrimp dinner that night at some tourist trap. I remember my mom saying that if we all do a little, we can do a lot. So I thought it was great when I heard of Florida Gov. Charlie Crist’s new executive order that requires state agencies and departments to hold meetings and conferences at lodgings that meet the new Florida Green Lodging standards. Read the rest of this entry »

Seemingly relegated to airport and stadium bathrooms, touchless faucets are starting to make their way into homes, with plumbing manufacturers moving to offer more design options.  It’s an idea that may seem strange at first, but touchless faucets are actually quite practical, especially for a children’s bathroom.  They are clearly beneficial in that they limit the spread of bacteria, but they also save water.  Consider how much water is wasted while brushing teeth.  A touchless faucet ensures that water isn’t running the entire time someone is brushing.  Combined with a water-saving aerator, touchless faucets can save a substantial amount of water.  And, since the water is set at a specific temperature, having a touchless faucet removes the risk of a child scalding him or herself accidentally. 

Touchless faucets are also available for kitchens, though consumers will need to do some research to make sure they are getting something that fits their habits.  Kitchen touchless faucets clearly carry the same health and water conservation benefits but most are set at one temperature, which might be inconvenient.  Also, if the faucet does not have an override switch, the homeowner will have to hold his or her hand over the sensor while filling a pot or doing dishes, though perhaps running water while doing dishes is a habit we should reconsider. Read the rest of this entry »

As I mentioned in my KBIS Report, I was struck by the sizes of bathtubs on display at this year’s kitchen and bath trade show. Though green was king thoughout most of the convention, companies that pitch themselves as catering to a luxury market seem to be sending the message that if you have enough money to waste water in giant bathtubs, then they’d be happy to sell you some, as if money absolves you of any kind of environmental responsibility.

It’s a hard statistic to nail down, but a person uses between fifty and seventy gallons of water each time he or she takes a bath. This number includes water wasted waiting for the desired temperature as well as hot water used to return the cooling water to the desired temperature. Compare that number to a five minute shower, which uses around twenty five gallons of water, possibly half that if the shower uses a flow restrictor. Clearly, if water conservation is the main goal, a quick shower is the answer, but let’s not throw out the bathtub with the bathwater just yet. Read the rest of this entry »

Editor’s note: As part of our new content partnership with Low Impact Living, we’ll be bringing you tips and tricks from their massive and growing archive of products and projects that can help you save energy, water and money around the house. Today, LIL blogger Jason Pelletier takes a look at tankless hot water heaters. This post was originally published on Monday, April 28, 2008.

Tankless hot water heaters are becoming a must-have appliance in homes these days. They purport to offer many benefits – instant and endless hot water, less wasted space, and a smaller carbon footprint as well. They can even be used to power radiant underfloor heating that is a luxury found in many green homes.

But are they truly the best option? What can you expect from one, and what do you have to worry about with installation? Finally, are there other options available that offer the same benefits without some of the challenges? We’ll try to cover most of that in this piece.

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In the United States, 340 billion gallons of fresh water — or 1/4 of the nation’s total supply — are pulled from rivers and reservoirs every day. (See greenerbuildings.com)

Our taps, plumbing fixtures, and irrigation systems all draw from the same sources of clean, potable water. After being used, most of the water ends up in the sewer system — all of it, at that point, contaminated. Then it is treated and returned to a body of water. This creates a cycle in which unnecessarily large volumes of water circulate through the built environment and municipal treatment facilities. However, in the last decade or so, major strides have been made in reducing the amount of water that must go through such a cycle. Read the rest of this entry »

As I walked around last year’s Kitchen and Bath Industry Show in Las Vegas, I asked where I could find the green products. I was encouraged to put on my walking shoes and make the trek to a minor hall where I found about twenty square feet devoted to five or six products that left little impression on me. Much has changed, it seems, in only one year. Green is the buzzword at this year’s show, helped in no small part by the host city, Chicago, showing off its green-ness through LEED building projects going up within sight of the convention center. Just about every booth displayed information on how green their products were. “Green building has become the spark that has added some life to this industry,” a representative from MasterBrand Cabinets told me.

Water saving innovators Kohler and TOTO made green the focus of their booths, proudly displaying the Watersense stickers on their high efficiency toilets. TOTO, who recycles 100% of their china, has developed a universal toilet bowl whose tank can be interchanged from a 1.6 gallon per flush to a 1.28 gpf e-tank. Read the rest of this entry »

San Francisco’s Union Square may be noted for its abundance of shopping, hotels, tourist joints, and even outside movies; but, a Green Home? Don’t call your Green Real Estate agent quite yet. The temporary green home occupied the prime real estate last week as part of the Better Homes and Gardens & Green Works Living Green exhibit.

The green traveling exhibit offered surprisingly educational and eye-catching examples of various water savings devices, energy star appliances, sustainable countertops, flooring, and furniture. Even though I didn’t stick around to hear the speakers (some of whom I know) the lineup offered an impressive array of green builders, designers and other knowledgeable types in the green industry.
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