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2. EPA WaterSense - Wikipedia

   en.wikipedia.org/wiki/EPA_WaterSense

   Using the efficiency standards established by EPACT92 as a baseline, the EPA instituted the following flow-rate guidelines for WaterSense: toilets must be manufactured with a maximum flush volume of 1.28 gpf; showerheads must have a maximum flow-rate of 2.0 gpm at 80 psi; and bathroom faucets must be manufactured with a low-flow volume rate of ...

3. Low-flow fixtures - Wikipedia

   en.wikipedia.org/wiki/Low-flow_fixtures

   According to the EPAs WaterSense, a leaky faucet that drips at a rate of one drip per second can waste more than 3,000 gallons of water per year. [21] Old and worn out rubber valve seals in a toilet tank can lead to significant leaks causing the toilet to refill constantly. Some leaky toilets may produce a running water sound that is easy to hear.

4. Fixture unit - Wikipedia

   en.wikipedia.org/wiki/Fixture_unit

   The relationship between gallons per minute (gpm) and fixture unit is not constant, but varies with the number of fixture units. For example, 1000 FU is equivalent to 220 US gallons per minute (0.014 m 3 /s) while 2000 FU represents only 330 US gallons per minute (0.021 m 3 /s), about 1.5 times the flow rate.

5. Dual flush toilet - Wikipedia

   en.wikipedia.org/wiki/Dual_flush_toilet

   A dual flush toilet; note the two buttons at the top of the cistern. A dual flush toilet is a variation of the flush toilet that uses two buttons or a handle mechanism to flush different amounts of water. The purpose of this mechanism is to reduce the volume of water used to flush different types of waste.

6. Low-flush toilet - Wikipedia

   en.wikipedia.org/wiki/Low-flush_toilet

   A low-flush toilet (or low-flow toilet or high-efficiency toilet) is a flush toilet that uses significantly less water than traditional high-flow toilets. Before the early 1990s in the United States, standard flush toilets typically required at least 3.5 gallons (13.2 litres) per flush and they used float valves that often leaked, increasing their total water use.

7. Maceration (sewage) - Wikipedia

   en.wikipedia.org/wiki/Maceration_(sewage)

   Maceration, in sewage treatment, is the use of a machine that reduces solids to small pieces in order to deal with rags and other solid waste.Macerating toilets use a grinding or blending mechanism to reduce human waste to a slurry, which can then be moved by pumping.