What distinguishes Class A biosolids from Class B biosolids?

Class A biosolids are distinguished by their treatment process that significantly reduces pathogens, allowing them to be sold and distributed openly for various uses, such as in agriculture or landscaping. This classification meets stringent environmental and health standards, making them safe for unrestricted public use.

In contrast, Class B biosolids contain higher levels of pathogens and may pose a risk to human health and the environment if not managed properly. As a result, their distribution is subject to restrictions, and public access can be limited to ensure safety. This fundamental difference in treatment and safety standards between the two classes is reflected in their respective uses and regulatory requirements. Class A biosolids are often seen as a more beneficial and versatile option, contributing positively to soil health without the same level of concern associated with Class B biosolids.