Conventional non-conserving faucets usually have flow rates between 2.75 and 5.0 gpm. Technological improvements have led to the low-flow faucets with rated flows between 1.5 and 2.5 gpm.
In a governmental study, it was found that using a low-flow faucet (2.75 gpm) only saved about one half-gallon per day. Even this modest reduction still adds up to a very significant savings of 5.5 percent. This is, however, only the beginning of technical possibilities; Buckminster Fuller demonstrated an air compressor assisted “atomizer” faucet using less than quart per minute
Most kitchen and bathroom faucets are made of brass, containing between 3 and 10 percent lead. This could make them a significant source of lead in drinking water, depending on the acidity of the water Some new low flow faucets are lined with polypropylene plastic, to reduce or eliminate lead in drinking water.
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