Composting and Biosolids Management

IEUA and Inland Empire Regional Composting Authority gave out free compost to the public in honor of Compost Awareness Week.

In 2002, IEUA entered into a Joint Powers Agreement with the Los Angeles County Sanitation Districts to create the Inland Empire Regional Composting Authority (IERCA). The IERCA designed and constructed a composting facility in Rancho Cucamonga called the Inland Empire Regional Composting Facility (IERCF). The IERCF is located in Rancho Cucamonga and is the largest fully enclosed composting facility in North America. It has been in operation since 2007, recycling biosolids and amendments such as woodwaste and greenwaste needed for the composting recipe.

For FY 2018/19, the IERCF processed 151,527 tons of biosolids and 40,982 tons of amendments and produced 201,195 cubic yards of STA Certified Compost sold under the brand name SoilPro Premium Compost. The compost is sold to landscapers and farmers throughout southern California.

Over the past 12 years, IERCF has cost-effectively provided and manufactured an exceptional quality compost with an excellent safety record and a perfect environmental compliance record.