Puerto Rico Aqueduct and Sewer Authority (PRASA) is a government agency created in 1945 to own, operate and develop the island's water and sewerage systems. The unit is in charge of supplying potable water to more than 1.2 million users, across a service area of over 3,500 square miles. It provides 97% of the consumers with water services, using eight dams (Carraízo, La Plata, Cidra, Toa Vaca, Dos Bocas, Cerrillos, Fajardo and Naguabo) and 118 water treatment plants that produce 570Mgd (millions of gallons per day), and have a combined capacity of 650Mgd. The agency also provides 59% of these clients with sewer services, through 52 wastewater treatment plants and a 20,000 miles pipeline network. PRASA is based in San Juan, Puerto Rico.