The Otay Water District is a water, recycled water, and sewer service provider. Through the efforts of a small group of private citizens, ranchers, and landowners who were concerned about the declining quality and quantity of water from their rural wells, the State Legislature authorized the establishment of the Otay Water District in 1956 as a California Special District under the provisions of the Municipal Water District Act of 1911. The Otay Water District is a "revenue neutral"​ public agency where each end user pays only his or her fair share of the District's costs of acquiring, treating, transporting, or the operation and maintenance of the public water, recycled water, or sewer facilities.The District provides water service to more than 240,000 customers within roughly 125 square miles of southeastern San Diego County, California. Its facilities serve the water, recycled water, and the sewer service needs of customers residing in the communities of eastern Otay Mesa along the international border with Mexico, eastern Chula Vista, Jamul, Spring Valley, Rancho San Diego, and unincorporated areas of El Cajon and La Mesa.