Who We Are

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.

Formation & Purpose

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.

Mission Statement

Inland Empire Utilities Agency is committed to meeting the needs of the region by providing essential services in a regionally planned and cost-effective manner while safeguarding public health, promoting economic development and protecting the environment. Key areas of service:

  • Securing and supplying imported water;
  • Collecting and treating wastewater;
  • Producing high-quality renewable products such as recycled water, compost, and energy; and
  • Promoting sustainable use of groundwater and development of local water supplies.

Agency Vision

To become a world class leader in water management and environmental stewardship, including water quality, water-use efficiency, recycled water, and renewable energy, in order to enhance and preserve the quality of life throughout the region.

Agency Values

Leading the way. Planning for the future. Protecting the resources of the communities we serve. The Inland Empire Utilities Agency is committed to:

  • Applying ethical, fiscally responsible, transparent and environmentally sustainable principles to all aspects of business and organizational conduct;
  • Working with integrity as one team, while celebrating the region’s diversity; and
  • Staying in the forefront of the industry through education, innovation, efficiency, and creativity.

Joint Powers Authority

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.

Customer Agencies

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.

Service Area Map