Clarke39s truly heavy duty industrial quality submersible dirty water cutter pump benefits from a corrosion resistant stainless steel drive shaft and body it also has a sharpened tungsten carbide cutter plate to chop and reduce any water borne sewage or vegetation this enables the hsec650a pump to happily pump dirty water even sewage water all day long and for cost conscious economic operation itrsquos also switched on and off automatically thanks to the inclusion of a simple but ef