Muffin Monster sewage grinders are designed to protect pumps and other equipment by grinding down the toughest wastewater solids.



10K Muffin Monster

The 10K Series Muffin Monster is a compact grinder, tough on solids in sludge and sewage applications. It fits into areas with limited space requirements while still providing the necessary power for downstream protection.

30K Muffin Monster

Troublesome solids are now easier than ever to reduce with the Muffin Monster dual-shafted grinder. Its slow speed, high-torque design shreds tough solids that typically cause sewer problems. With over 35,000 installations, the proven capabilities of the Muffin Monster is legendary in providing solutions for the ever more stringent operational needs arising throughout the industry.

40K Muffin Monster

The rugged 40K Series Muffin Monster grinding machine shred most any material capable of disrupting your system. The larger Muffin Monster excels in wet and dry grinding applications. It’s a powerful shredder for large pump stations and large sludge processing systems. It also serves in many industrial applications including fish and beef processing, petroleum, pulp and paper mills, chemical plants, and recycling plants.


SA Water has flagged wet wipes as one of the biggest problems currently facing the wastewater industry. Wet wipes are notorious for clogging pipes and damaging sewer infrastructure.

The wet wipes blight

  • wipes haven proven very popular with consumers
  • pump stations everywhere are clogging with wipes
  • worker safety issues
  • higher maintenance costs
  • higher electrical costs due to inefficient pumps

Muffin Monster and Channel Monster from JWC, are taking up the fight by introducing 17 tooth wipes-ready cutters. These specially designed cutters feature the necessary capabilities to control both the width and length of output, preventing materials forming long strips and reweaving in the waste stream.


  • serrated edges
  • cuts in 2 directions
  • 51% reduction in long strips
  • smaller particle size
  • no reweaving


  • controller senses overload and auto-reverses to prevent blockages
  • adapts to pipelines or channels with little or no modification
  • ease and flexibility of installation
  • more capable of grinding large debris than macerators
  • energy saving and efficient motor


  • dual-shafted sewage or sludge grinder
  • low-speed, high-torque grinder


For continuity of service please register your JWC monsters with Global Water at the Global Water Service Centre.



Model # Description File
JWC Muffin Monster brochure Download
JWC Are you wipes ready? brochure Download
JWC Corporate Profile brochure Download

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