Discharge of system or backwash water

Discharge of system or backwash water. Discharge of system or backwash water. Water discharged to the ground surface or storm sewers as part of flushing the distribution system, draining or disinfecting reservoirs, or as part of operation of a water treatment facility shall comply with the applicable general permit to discharge under the Wisconsin pollutant discharge elimination system (WPDES) as per the provisions of ch. 283 , Stats. Discharge directly to a surface water is prohibited unless specific approval is obtained prior to the discharge.