Discharge concentrations of these products only in accordance with the requirements of a National Pollutant Discharge Elimination System (NPDES) permit. Notify the permitting authority in writing prior to discharge. Notify the local sewage treatment plant authority before discharging effluent containing this product to sewer systems. For guidance, contact the State Water Board or Regional Office of the U.S. Environmental Protection Agency.
Excess residues of NALCO 9380 and MACROTROL 9210 must be detoxified prior to discharge.