Scope of Services The Inland Empire Utilities Agency (“Agency”) is a regional wastewater treatment agency that provides sewage treatment for the cities located within the west end of San Bernardino County. Additionally, the Agency serves as a supplemental source of potable water and recycled water to the same geographic area. The Agency was incorporated in June 1950, under the Municipal Water District Act of 1911, as a municipal corporation. The Agency’s service area encompasses approximately 242 square miles, including the Cities of Chino, Chino Hills, Fontana, Montclair, Ontario, Rancho Cucamonga, and Upland; and several of the unincorporated areas of western San Bernardino County.