What is the fecal coliform limit for Class A biosolids?

The fecal coliform limit for Class A biosolids is set at 1,000 coliforms per gram of total solids. This standard is significant as it reflects the treatment level of the biosolids, ensuring they are safe for beneficial uses, such as agricultural applications. Class A biosolids are treated to significantly reduce pathogens, and the fecal coliform limit is a key metric used to gauge the effectiveness of the treatment process. Meeting this limit helps maintain public health safety by minimizing the risks associated with pathogen transmission through land application of biosolids. Understanding these standards is crucial for wastewater operators, as it ensures compliance with regulations and protects both human health and the environment.