Non-conventional pollutant

Non-Conventional Pollutant: Any pollutant which is not a statutorily listed or which is poorly understood by the scientific community.

Advanced Treatment: A level of wastewater treatment more stringent than secondary treatment; requires an 85-percent reduction in conventional pollutant concentration or a significant reduction in non-conventional pollutants.

and nitrogen and a high percentage of suspended solids. This treatment is more stringent than secondary treatment, and requires an 85 percent reduction in conventional pollutant concentrations or a significant reduction in non-conventional pollutants.

Non-Conventional Pollutant
Non-degradation
Nondischarging Treatment Plant
Non-Ferrous Metals
Nonfriable Asbestos-Containing Materials
Nonhazardous Industrial Waste
Non-Methane Hydrocarbon (NMHC)
Non-Methane Organic Gases (NMOG) ...

See also: Nitrogen, Emission, Waste, Pollution, Pollutant