Contractor profiles
- Rabb Construction Ltd.
- Randy Brown Excavating
- Rcomm Construction & Excavation
- Reliable Brokers
- Renaud Construction
- Rental Save
- Republic Services
- Rhino Excavation
- Rideau Supply
- Rideau Valley Conservation Authority
- Rivercourt Engineering Inc.
- RJH Excavating & Septic
- Robin Smith Engineering
- Robinson Enterprises/SepticCheck.ca
- Robinson Excavating and Trucking Limited
- Robinson Haulage Inc
- Robitaille Contracting & Septic Services
- Roger Salmon & Sons Equipment Rental – Jay Salmon
- Ron's Pumping Service
- Room To Go
- Rooter-Man
- Roswell Concrete Products
- Roth North America
- RT Excavation Inc.
- Rudak Excavating Inc.
- Ruppert Haulage Inc
- RVSS - Rideau Valley Septic Services
- S Charlebois Haulage And Excavating LTD
- Safe Sewage Systems Consulting Inc.
- Sanitary Sewer Cleaning Co Ltd.
- SciCorp International Corp
- Scotland Yard Facility Maintenance
- Scott's Excavating & Landscapes
- SCS (Smale Consulting Services)
- Seamless Building
- Seeley Group Inc.
- Seneca College
- Seneca Polytechnic
- Seneca Polytechnic
- Septex Design Engine