Section 144-232-8-801.0 - SUBMERSIBLE PUMPS801.1Pump type and size: Size and install pump to at least the minimum of the Manufacturer's recommendations.801.2Check valves: One (1) check valve shall be installed within 20 feet of the discharge of the pump. All check valves shall be accessible for service but shall not be direct buried.801.3Disinfection: For any new installation of a submersible pump or servicing of wire, pipe and/or pump repair within the well, the well shall be chlorinated to a minimum concentration of 50 parts per million for a minimum of 24 hours upon completion of installation or repair.10-144 C.M.R. ch. 232, § 8-801.0