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Welcome to Mainline Water & Sewer Company

Servicing Durham Region and Northumberland County.

Our Services

Sewer Water Mainline Icon

Watermain/Sewer/Site Servicing

bulk earth moving


Construction Icon


land rehabilitation icon


Rebuilding Icon


Earthworks Icon

Bulk Earth Moving

land clearing icon

Land Clearing

Cleaning & Refurbishing Icon

Cleaning & Refurbishing


Experts on Watermain, Sewer & Site Servicing.

Residential, commercial and industrial road construction.

Our services include:

      • Watermain, sewer & storm.
      • Rebuilding roadways, sidewalks and boulevards.
      • Complete reconstruction and replacement of existing infrastructure including storm/sewers/water main.
      • Earthworks and site servicing.
      • Construction of new storm management ponds.
      • Re-habilitation of existing storm management ponds.
      • Cleaning and re-furbishing existing storm management ponds.
      • Bulk earth moving and land clearing.
      • Re-habilitation of existing infrastructure.
      • Slinger Trucks
      • Slinger Services
      • Stone Slingers

Our Equipment

PC490LC_911 Excavator - Labeled
350 John Deere Excavator - Decaled
490 KOMATSU - Labeled
750 John Deere Dozer - Labeled
WA320-SL Loader - Labeled
300 Articulated John Deere Rock Truck - Decals
D8 Series iTrack Dozer - Labeled
Padded Roller
HAMM H101 ROLLER - Labeled

Contact Us

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Mainline Water & Sewer Company

We are always able to be contacted through our 7:00 AM – 10:00 PM, Monday – Friday through our Bowmanville and Cobourg Offices:

Bowmanville Office:

10 East Shore Drive, Bowmanville, ON L1C 4P8

Cobourg Office: