September-October 2007

Indoor-Outdoor Savings

Incorporating water efficiency technologies becomes standard practice for master-planned communities throughout the country.

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By Carol Brzozowski

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“We did not know what the take would be on marketing the Sanctuary with the efforts we’ve done because we’re used to developing luxury, high-end communities,” says Martin. “When we had the first-year sales, out of 81 private preserves, we sold more than 50 to the builders on one day and then we sold more than 20 on a retail draw. We did really well that first year and in years after that. We were pleasantly surprised.”

Turning the Rockies Green
McStain Neighborhoods in Louisville, CO, has been experimenting with and instituting “green” building techniques before the word green was popular, notes Jeff Medanich, the company’s manager of building sciences. “We are a pioneer green builder,” he says. “We have 100% Energy Star–rated homes. They are considered high-performance homes. We average 40% more efficient than a conventionally built home.”

For instance, McStain Neighborhoods teamed up in 2004 with the Masco Corp.—one of the world’s largest manufacturers of home improvement and new construction products—to construct a water conservation house to test-run “green” concepts. McStain Neighborhoods is affiliated with the Colorado Built Green Program and recently aligned with the Denver Water Board as a participant in the EPA’s Water Efficiency Benchmarking Study, being administered by Aquacraft.

According to the EPA, the study will help establish voluntary targets for builders who want to provide homebuyers with alternate water efficiency options; develop criteria for water-efficient homes based on water-using products and building design or on average gallons used per resident per day; and create special certification marks to help consumers identify water-efficient new homes.

Results are intended to help states and water utilities make local decisions on establishing water-use criteria for new homes, planning water efficiency programs, and projecting future needs. The project seeks to demonstrate how advanced technologies, such as water-efficient landscape designs, weather-based irrigation controllers, and high-efficiency toilets and faucets, can reduce water use below current levels. The relationship between household indoor-water use and variables that include the number of residents, home size, and types of fixtures and appliances present will be investigated. Outdoor water use will be quantified from total annual use, rates of application, local plant water requirements, lot size, landscape design, and type of irrigation system controller.

Other states involved in the study include Utah, North Carolina, Oregon, Arizona, California, Nevada, and Florida. “The commitment from the builder is to build 20 homes over the course of two years that will include water conservation devices,” says Medanich.

In the bathrooms of newly constructed homes, McStain Neighborhoods is using high-efficiency toilets such as the VitrA’s Evergreen high-efficiency toilets that use 1.2 gallons per flush, well below the mandated 1.6 gallons per flush. McStain prefers high-efficiency toilets over dual flush because the former outperforms the latter and many people do not understand how to properly use a dual-flush toilet, Medanich says.

“People don’t realize there are two levers. Some of the manufacturers of the dual flush use one lever you press down for one flush and pull up for another and people don’t realize that, so they don’t get the efficiency out of them that they had intended,” he adds.

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High-efficiency toilets are subject to maximum performance testing that studies the waste removal performance measure of toilets, or the amount of water needed to sufficiency flush a specific measure of matter. The toilets must flush 350 grams or more to qualify for the toilet efficiency rating. “With dual flush, sometimes the efficiency is gone,” says Medanich. “Even if you use 1.1 gallons per flush but you have to flush it twice, then you’ve doubled your water.”

Low-flow showerheads that use 1.6 gallons per minute or fewer are used in the bathrooms. Some homeowners complain they don’t get enough flow from reduced-flow fixtures and cannot rinse the shampoo out of their hair, Medanich notes. But current technologies akin to the type used in automobile windshield wiper systems allow for a greater distribution of less water, creating an increased volume that addresses the problems with rinsing soap and shampoo. Next Page >

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