D.C.’s drinking water comes from the Potomac River, is treated by the Washington Aqueduct, and is then delivered by DC Water. The system supplies approximately 95.8 million gallons per day of water, equivalent to 145 Olympic swimming pools. The system entails 1,350 miles of pipes, equivalent to driving from D.C. to Chicago and back. The pipes’ median age is 79 years, which is beyond the design lifespan of 50 years, and 9% of pipes were installed during the period between the Civil War and the 1890s. Recently, DC Water started replacing 1% of pipes a year. While 3 times the previous year’s replacement rate, it is still a 100-year replacement cycle. There are typically 400 to 550 water main breaks a year. The system also includes 4 pumping stations, 5 reservoirs, 3 elevated water storage tanks, and 9,300 fire hydrants.