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Heavy excavator on an active civil construction site

Civil infrastructure contractor · GTA + beyond

Built from the
ground down.

Site servicing, sewer, watermain, stormwater, excavation, and complex underground construction—built to perform.

Explore our work Start a conversation
Site servicingSewer & watermainStormwaterEarthworksDeep excavation

01 / Who we are

Strength under the surface

The critical work is below the surface.

EXMAX Contracting Inc. is a civil construction contractor specializing in site servicing, sewer and watermain installation, stormwater infrastructure, excavation, and complex underground construction throughout the Greater Toronto Area and beyond.

We bring field experience, capable crews, and the right equipment to scopes where sequence, depth, ground conditions, and coordination make the difference.

See our capabilities

02 / What we build

Full civil scope

Infrastructure that starts underground.

01

Site Servicing

Complete underground servicing packages for industrial, commercial, institutional, and land-development projects.

  • Sanitary
  • Storm
  • Water
02

Sewer Infrastructure

Sanitary and storm systems built for demanding alignments, deep structures, and large-diameter applications.

  • Deep sewer
  • Manholes
  • Connections
03

Watermain & Waterworks

Municipal watermain installation, testing, commissioning, and complex tie-ins executed with precision.

  • Watermain
  • Testing
  • Tie-ins
04

Excavation & Earthworks

Bulk excavation, cut and fill, site grading, trenching, and engineered backfill for heavy-civil construction.

  • Earthmoving
  • Grading
  • Backfill
05

Stormwater Systems

Installation of storm tanks, chambers, large-diameter pipe, and integrated stormwater management infrastructure.

  • StormBrixx
  • Storage
  • Drainage
06

Complex Underground

Deep excavation, groundwater challenges, shoring coordination, and heavy precast structures where execution matters most.

  • Deep cuts
  • Dewatering
  • Precast

03 / Work in view

Built for complexity

Work that goes deeper.

From deep utility installations to major stormwater systems, our work is defined by the conditions that make it difficult.

Civil underground construction work01

Deep sanitary systems

Deep manholes, demanding grades, and coordinated utility installations.

Civil underground construction work02

Large-diameter storm

Storm pipe, chambers, and site-wide drainage infrastructure.

Civil underground construction work03

Waterworks & reservoirs

Watermain, pump-house, and reservoir-related civil scopes.

Serving the GTA, Southern Ontario, and select projects beyond.

Bring us your next scope
Concrete infrastructure components arranged in an industrial yard
Field readyPeople. Equipment. Execution.

04 / Capabilities

Ready for the difficult work

Equipped for the complicated part.

The underground scope rarely happens in isolation. EXMAX plans the work around access, water, soil, safety, structures, and the trades working around us.

  1. 01Deep excavation & trench protection
  2. 02Groundwater control & dewatering
  3. 03Large precast structures & heavy lifts
  4. 04Grade control & installation accuracy
  5. 05Coordinated municipal connections
15+Years serving Ontario construction
2017Expanded into municipal sewer & watermain
GTA+Mobilized across Southern Ontario and beyond

05 / How we work

Built around execution

Plan the ground. Control the work.

01

Scope it clearly

Review drawings, quantities, access, staging, existing services, and risk before equipment moves.

02

Sequence it safely

Coordinate excavation, shoring, dewatering, materials, inspections, and adjacent trades around the install.

03

Build it to perform

Install, test, backfill, and close out each system with the long-term performance of the site in mind.

Start below the surface

Bring us the project that needs a serious civil partner.

Send project details
647 882 5051info@exmaxcontracting.com
200–2010 Winston Park Drive, Oakville, ON L6H 5R7