Industrial User Means: Any user whose discharges, singly or by interaction with other wastes: contaminate the sludge of the wastewater treatment system, injure or interfere with the treatment process, create a public nuisance or hazard, have an adverse effect on the water’s receiving wastewater plant discharges, exceed normal domestic strength waste limitations, exceed normal residential unit volumes of wastewater.
-Normal domestic strength waste means: wastewater that is primarily introduced by residential
users with BOD concentrations not greater than 150mg/L and total suspended solids (TSS)
concentrations not greater than 150 mg/L.
The City of Northfield has been delegated authority over Industrial Users by the Minnesota Pollution Control Agency. Industrial Users are required to have a permit through the City of Northfield to make the users aware of the limits of discharges to the wastewater treatment system.