What types of slug loadings must industrial users notify the POTW about?

Industrial users must notify the Publicly Owned Treatment Works (POTW) about slug loadings that involve corrosive pollutants and solid or viscous pollutants. This requirement is in place because these types of pollutants can significantly harm the treatment process and the infrastructure of the POTW. Corrosive pollutants can damage pipes and treatment equipment, while solid or viscous pollutants may cause blockages or impede the treatment process. By alerting the POTW about these specific types of discharges, the industrial users help ensure that appropriate measures can be taken to protect the treatment facility and maintain compliance with regulatory standards.

Other options do not encompass the full responsibility of notifying the POTW regarding hazardous or detrimental discharges. For example, only notifying about hazardous waste would overlook other harmful substances, and suggesting that beneficial pollutants need reporting does not align with the purpose of maintaining effective treatment processes.