Contractor profiles
- Mahon Drainage
- Make-Way Environmental Technologies Inc
- Maurice Duval Excavation Inc. – Michel Pilon
- McCarthy Septic and Vac
- McIntosh Perry
- McIntosh Perry – Patrick Leblanc
- McVeigh Construction
- MECP
- Metropolitan Pump Co.
- Michael Codner
- Mike Clark Excavating and Septic Pumping
- Miles Excavating LTD
- Mitch Rowley Plumbing Inc.
- MND6 Inc.
- MNT Consulting Group Inc.
- Mohawk College
- Moose Creek Precast Inc
- Morey Associates Ltd.
- Morey Associates Ltd. – Dan Morey
- Mr. Septic Inc – Trevor McMahon
- MTE Consultants Inc
- MTS Environmental Inc.
- Municipality of Chatham-Kent
- Municipality Of Grey Highlands
- Municipality of Huron East
- Municipality of Meaford
- Municipality of Trent Lakes
- Murphy's Septic Service
- Muskoka Barging & Construction
- Muskoka Part 8
- MXC Excavating Inc
- MXR - Mini X Rental
- Natalie's Portable Restrooms
- National Capital Commission
- Nature's Call - Ford On-Site Services
- Near North Supply Inc.
- NEO Industrial & Environmental
- Newmarket Precast
- Newterra
- NHD North Inc