Grinder Pump Repair

MDI offers emergency and non-emergency grinder pump repair and replacement. A Grinder Pump is a wastewater pumping device, often associated with sewage and septic pump applications. Wastewater usually from fixtures, toilets, kitchen sinks, bathtubs, washing machines, etc. flows through the sewer pipes into the grinder pump’s holding tank. Once the wastewater inside the tank reaches a specific level, the pump will turn on, grind the waste into a fine slurry, and pump it to the central sewer system or septic tank. Grinder Pumps can be installed in the basement or in the yard. A grinder pump is different from a sump pump or effluent pump.

There are two types of grinder pumps, semi-positive displacement and centrifugal. Grinder pumps are a type of submersible sewage (septic) pump that has cutting teeth incorporated onto the impeller to grind the sewage for pressure sewer applications. The discharge piping can be smaller since the wastewater is ground up to a liquid, high head conditions are a specific use for this design of pump.


Grinder Pumps have grinding teeth on the inlet of the impeller, submersible motor.


Grinder Pumps are mostly used for residential pressure sewer systems. Usually where high head conditions exist for sewage.

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Grinder Pumps usually pump sewage and other wastewater products.


Grinder Pumps allow smaller diameter sewage discharge piping than typical gravity drain sewers. Also, the sewer lines can follow the contour of the land since they don’t have to continuously drain to the collection point.

  • MDI Grinder Pump Repair Services
  • Onsite troubleshooting
  • Removal of Grinder Pump from jobsite (If required)
  • Complete disassembly and inspection including non-destructive testing and precise measuring.
  • Bead blasting and thorough cleaning of all Grinder Pump components and parts
  • Grinder Pump parts fabrication or rebuilt (As necessary)
  • Reassembly
  • Delivery

MDI can repair, rebuild, redesign, or upgrade your Grinder Pump to get it back in service as quick as possible with the reliability that you expect. We stand behind every rebuild or repair with our 100% workmanship guarantee.

MDI’s Planned Maintenance Programs create peace of mind and system longevity.

MDI's repair service for all your pump needs, just fill out the form below to get things started or call.

Call Us Toll Free: (800) 634-4077

Ideal Service Area
Ideal Service Area