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2. Low-flow fixtures - Wikipedia

   en.wikipedia.org/wiki/Low-flow_fixtures

   A low-flow fixture is a water saving plumbing fixture designed to achieve water savings by having a lower flow rate of water or a smaller quantity per flush. Some of these low-flow fixtures are faucets , showerheads, and toilets .

3. EPA WaterSense - Wikipedia

   en.wikipedia.org/wiki/EPA_WaterSense

   The EPA develops specifications for water-efficient products – low-flow fixtures – through a public process. If a manufacturer makes a product that meets those specifications, the product is eligible for third-party testing to ensure the stated efficiency and performance criteria have been met. If the product passes the test, the ...

4. Drain-waste-vent system - Wikipedia

   en.wikipedia.org/wiki/Drain-waste-vent_system

   In the U.S., every plumbing fixture must also be coupled to the system's vent piping. [1] Without a vent, negative pressure can slow the flow of water leaving the system, resulting in clogs, or cause siphonage to empty a trap. The high point of the vent system (the top of its "soil stack") must be open to the exterior at atmospheric pressure.

5. 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.

6. Water efficiency - Wikipedia

   en.wikipedia.org/wiki/Water_efficiency

   Installing faucet aerators and low-flow shower heads in municipal buildings. Replacing worn-out plumbing fixtures, appliances, and equipment with water-saving models. Minimizing the water used in space cooling equipment in accordance with the manufacturer's recommendations. Shutting off cooling units when not needed.

7. Plumbing fixture - Wikipedia

   en.wikipedia.org/wiki/Plumbing_fixture

   Each of these plumbing fixtures has one or more water outlets and a drain. In some cases, the drain has a device that can be manipulated to block the drain to fill the basin of the fixture. Each fixture also has a flood rim, or level at which water will begin to overflow. Most fixtures also have an overflow, which is a conduit for water to ...