R 325.1751 Pump discharge and suction lines.

Rule 251. (1) A discharge line of a dewatering well shall leave the well above working grade. A pump in a dewatering well shall be installed in a manner that will permit discharging water above the working grade. Approval in writing shall be obtained from the department for a belowground discharge connection to a dewatering well casing. (2) A suction line or header pipe and well points of a dewatering system shall be maintained to prevent surface water from entering the aquifer.