When Louisville built a 600,000-gallon potable water storage tank in 1950, fewer than 2,000 people lived in the city. Today, after consistently earning a place on "best places to live" lists, the Colorado Rocky Mountain community has more than 20,000 residents. Inevitably, the tank became too small to meet demand. Public Works wanted to increase storage capacity to 8 million gallons. In the 1980s, the department built a 3 million gallon tendon-prestressed concrete tank (American Water Works Association standard D115-06) and converted the old tank into a chlorine contact basin that feeds the new tank.
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