Inland Empire Utilities Agency (IEUA/Agency) is a regional wastewater treatment agency and wholesale distributor of imported water. Today, the Agency is responsible for serving approximately 935,000 people over 242 square miles in western San Bernardino County. The Agency is focused on providing three key services: (1) treating wastewater and developing recycled water, local water resources, and conservation programs to reduce the region’s dependence on imported water supplies, thus enabling the service area to become drought-resilient; (2) converting biosolids and waste products into a high-quality compost made from recycled materials; and (3) generating electrical energy from renewable sources.

The Agency was originally formed as the Chino Basin Municipal Water District on June 6, 1950 as a municipal corporation with a mission to supply supplemental imported water purchased from the Metropolitan Water District of Southern California (MWD) to municipalities in the Chino Groundwater Basin. Since then, the Agency has expanded its mission from a supplemental water supplier to include regional wastewater treatment with domestic and industrial disposal systems, and energy production facilities. In addition, the Agency has become a major provider of recycled water, a supplier of biosolids/compost materials and continues to lead the way in water quality management and environmental protection in the Inland Empire.

To enhance the quality of life throughout our region by leading the way in water management and environmental stewardship.

Provide essential water and wastewater services in a regionally planned and cost-effective manner, while safeguarding public health, supporting community needs, and protecting the environment.

Leading the way. Planning for the future. Collaboratively protecting the resources of the communities we serve. IEUA:

• Integrates environmentally sustainable, ethical, safe, and fiscally responsible practices into every aspect of our business.
• Works with integrity as one team.
• Actively engages with the communities we serve while recognizing the region’s diverse needs.
• Stays at the forefront of the industry through education, efficiency, and innovation.

The Agency is part of multiple joint powers authorities including Chino Desalter Authority, Inland Empire Regional Composting Authority and the Santa Ana Watershed Project Authority.

As a regional wastewater treatment agency, the Agency provides sewage utility services to seven contracting agencies under the Chino Basin Regional Sewage Service Contract: the cities of Chino, Chino Hills, Fontana, Montclair, Ontario, Upland, and Cucamonga Valley Water District (CVWD) in the city of Rancho Cucamonga.

In addition to the contracting agencies, the Agency provides wholesale imported water from MWD to nine retail agencies: the cities of Chino, Chino Hills, Ontario, Upland, CVWD in the city of Rancho Cucamonga, Fontana Water Company in the city of Fontana, Monte Vista Water District (MVWD) in the city of Montclair, San Antonio Water Company in the city of Upland, and West Valley Water District in the city of Rialto.