<P> The centralized drinking water supply infrastructure in the United States consists of dams and reservoirs , well fields , pumping stations , aqueducts for the transport of large quantities of water over long distances , water treatment plants , reservoirs in the distribution system ( including water towers ) , and 1.8 million miles of distribution lines . Depending on the location and quality of the water source , all or some of these elements may be present in a particular water supply system . In addition to this infrastructure for centralized network distribution , 14.5 % of Americans rely on their own water sources , usually wells . </P>
<P> The centralized drinking water supply infrastructure in the United States consists of dams and reservoirs , well fields , pumping stations , aqueducts for the transport of large quantities of water over long distances , water treatment plants , reservoirs in the distribution system ( including water towers ) , and 1.8 million miles of distribution lines . Depending on the location and quality of the water source , all or some of these elements may be present in a particular water supply system . In addition to this infrastructure for centralized network distribution , 14.5 % of Americans rely on their own water sources , usually wells . </P>
where do most cities get their water supply
where do most cities get their water supply
dams reservoirs well fields
dams reservoirs well fields