The 1.6-gallon-per-flush toilet is making way for new high-performance units that save even more water.
By Nigel F. Maynard
[snippets:] ...the ubiquitous dual-flush toilet uses a standard 1.6 gallons for a general flush and a second option that uses less water. Almost every toilet manufacturer offers one, in combinations that include 1.6/1.1 gallons to 1.28/0.6 gallons.
The company that takes the prize for ultra–low-flow is Niagara Conservation in Fort Worth, Texas, whose single-flush Stealth uses only 0.8.
San Francisco’s push for low-flow toilets has resulted in more sludge backing up inside the sewer pipes, creating the smell of rotten eggs.