A wastewater recycling project in East County will receive a sizable injection of federal funds, officials announced Friday.

The U.S. Environmental Protection Agency has awarded a $388 million, low-interest loan to help finance the East County Advanced Water Purification Program — a partnership between San Diego County, El Cajon, Helix Water District and Padre Dam Municipal Water District.

The water recycling project is estimated to cost about $640 million and create about 2,500 local jobs. It’s expected to come online in 2025, providing up to 30 percent of East County’s drinking water supply, from Santee to La Mesa and El Cajon, as well as unincorporated communities such as Spring Valley, Lakeside and Alpine.