Water-Efficiency

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Trenchless Excavation

In the hands of a skilled operator, a horizontal boring machine can solve tough... More

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Residential Rainwater-Collection Systems

Water for household use is within easy reach, but you have to filter and disinfect... More

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High-Efficiency Toilets

New 1.28-gallon toilets do a surprisingly good job of clearing the bowl. More

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Efficient Hot-Water Piping

Smarter layouts and right-sized pipes save time, water, and energy More

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Hot-Water Circulation Systems

On-demand systems install quickly and can save both water and energy. More

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Installing On-Demand Water Heaters

Compact tankless water heaters free up valuable space and save energy, but sizing... More

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Water-Efficiency Instruction Articles

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Energy Payback From Instantaneous Water Heaters

Q. Do the energy savings provided by instantaneous gas water heaters justify their higher cost? More

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Q&A: Low Flows & Waste Lines

Q: Do low-flow toilets generate enough water to carry solids through the soil pipe to the city sewage line or the septic system? With so little water being flushed, my concern is that in older homes with cast iron pipes, corrosion in the pipe may catch the solids and cause blockage. More

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Q&A: Reliability of Low-Flow Toilets

Q: My remodeling customers are frequently skeptical when I replace their old 5-gallon toilets with 1.6-gallon toilets. They have heard of problems like "skid marks," multiple flushes, and so forth. Also, the word I have heard from the field is that pressure-assisted toilets create more problems than they are worth. Have the new low-flow designs solved these problems? More

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Q&A: Septic Systems and Low-Flow Fixtures

Q: Can low-flow fixtures cause any problems with residential septic systems? More

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