What type of hazards do prohibited discharges from industrial users create in sewers or POTWs?

Prohibited discharges from industrial users can create a fire or explosion hazard due to the presence of flammable or reactive substances in the wastewater. When these substances enter the sewer or publicly owned treatment works (POTWs), they may come into contact with other materials or conditions that could trigger combustion or explosive reactions. For example, certain chemicals, if mixed with organic materials in the sewer, can produce heat and gas, potentially leading to dangerous situations, including explosions.

The nature of these hazardous discharges depends on the sources of the waste and the specific chemicals involved, which is why stringent regulations and monitoring are essential in wastewater management. Identifying and controlling such discharges is critical to ensure the safety of treatment facilities and the surrounding environment.