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A faucet is a tool for delivering normal water from a plumbing related system. It can consist of the following components: spout, handle(s), lift up pole, cartridge, aerator, blending chamber, and normal water inlets. Once the handle is fired up, the valve opens and controls the stream modification under any temp or drinking water condition. The faucet body is usually made of brass, though die-cast zinc and chrome-plated plastic are used also.

The majority of home faucets are one or dual-control cartridge faucets. Some single-control types use a plastic or metal core, which operates vertically. Others use a steel ball, with spring-loaded plastic seals recessed into the faucet body. The less expensive dual-control faucets contain nylon cartridges with plastic seals. Some faucets have a ceramic-disc cartridge that is much more durable.

Faucets must adhere to water conservation laws and regulations. In america, bath basin faucets are actually limited to 2 gal (7.6 L) of drinking water per minute, while shower and tub faucets are limited by 2.5 gal (9.5 L).

Faucets run an average of eight minutes per capita per day (pcd), corresponding to a report by the American Water Works Association Research Groundwork completed in 1999 that was based on normal water use data collected from 1,188 residences. In daily pcd use indoor water use was at 69 gal (261 L), with faucet use third highest at 11 gal (41.6 L) pcd. In residences with water-conserving fittings, faucets transferred up to second at 11 gal (41.6 L) pcd. Sink use was strongly related to home size. The addition of teens and adults increases water use. Tap use is also adversely related to the number of persons working outside the home and is lower for many who have an programmed dishwasher.The manufacturing process for faucets is becoming highly computerized, with computers handling most of the machines. Production and efficiency have thus increased over time.

Production and efficiency have increased over the years. The basic process contains forming the main body of the faucet (some-times including the spout if no swivel is needed), applying a finish, and then assembling the various components, followed by packaging and inspection. The faucet industry in addition has been impacted by environmental regulations, that have required special processes to be developed.