Biosolids at ERWSDBiosolids are the nutrient-rich organic product of the wastewater treatment process.  Treated and tested in accordance with strict Environmental Protection Agency (EPA) and State of Colorado regulations, the Eagle River Water & Sanitation District’s (District) biosolid product is essentially a rich, dark, organic substance with a mild, earthy odor. Biosolids help the soil retain moisture and encourage the formation of good soil structure. It is loaded with beneficial plant nutrients that are readily available. Local landscapers and homeowners use biosolids produced by the District to fertilize and condition soil for use in flower gardens and landscaping. Biosolids are also used for large-scale projects involving construction, mine reclamation, and other sites requiring revegetation.  Because of regulatory restrictions, they are not approved for use in vegetable gardens or the commercial farming of food crops.

How are biosolids produced and regulated?
Municipal wastewater enters the wastewater treatment facilities as mostly water, containing about 0.5% solid matter. During the treatment process at the Avon and Edwards Wastewater Treatment Plants, much of the water is removed, and the solids undergo a state-of-the-art biosolids digestion process called Autothermal Thermophilic Aerobic Digestion. This process produces Class A Biosolids – a product that meets, but typically exceeds, all Class A pathogen and metals biosolids criteria set forth in the USEPA 40CFR Part 503 and State of Colorado regulations. These regulations were developed as part of the Clean Water Act Amendments of 1987 to protect the public health and environment from any unreasonable adverse effects of certain pollutants that might be present in biosolids.

The District’s biosolids are transported to and stored at the Biosolids Containment Facility for further treatment and drying. The District has used these Class A Biosolids for landscaping at most of the District facilities throughout the area.

Where can I obtain biosolids?
Biosolids are available for sale to the public from late Spring through early Fall.

To find out more about the availability, appropriate use, or other biosolid information, please contact the district’s biosolids coordinator at 970-748-7401 or 970-471-1707 (cell).