Septic and Excavation Services You Can Trust

Marchington Excavation installs septic systems, fixes drainage problems, clears lots, and handles excavation for homes and businesses across communities in the Ottawa region.

Every job is led by owner Will Marchington. You deal with him from the first call to the final walkthrough.

Why Choose Us

01.

Quality Workmanship

Every system we install is built to last. We use the right materials, follow proper methods, and meet all Ontario Building Code rules. A system done right the first time saves you thousands down the road.

02.

Owner-Operated

No sales teams. No subcontractors. No surprises. The person you talk to on the phone is the same person on your property doing the work.

03.

Fully Licensed & Insured

We carry full liability insurance and are bonded for your protection. We work with the MVCA, RVCA, and South Nation to make sure every project is properly permitted and passes inspection.

Family-owned. Locally operated.

Marchington Excavation is owned and operated by Will Marchington. When you call us, you're talking to Will. When we show up on your property, Will is operating the equipment. No sales team, no runaround, just a straightforward contractor who takes pride in his work and knows the local landscape. We install septic systems, providing drainage solutions, lot clearing, utility trenching, and general excavation for properties across Mississippi Mills, West Carleton, Lanark County, and communities throughout the Ottawa region.

Septic Installation

We design and install septic systems for homes and businesses. We work with conventional, filter bed, Eljen GSF, and Ecoflo systems. Will leads every project from start to finish.

Learn more about septic installation

Septic System Repair & Replacement

Slow drains? Wet spots in your yard? Sewage odours? We can find the problem and fix it. If your system needs to be replaced, we handle the full process.

Learn more about septic repair

Lot Clearing & Backfilling

Building a new home? We clear trees, brush, stumps, and roots. Then we backfill and grade your site so it’s ready for the next step.

Learn more about lot clearing

Trenching & Utility Services

We dig trenches for hydro, gas, propane, and water lines. Every trench is dug to the right depth and meets local code.

Learn more about trenching services

Drainage Solutions

We install weeping tile, culverts, and ditches to move water away from your home. Poor drainage damages foundations and septic systems.

Learn more about drainage services

Excavation & Heavy Equipment Services

Need topsoil spread, debris removed, stumps pulled, or a pool filled in? We bring the right machine for the job.

Learn more about equipment services

Our Recent Work

Proudly Serving the Ottawa Region. From Lanark County to Cumberland and Everywhere In Between

Whether you’re building a new home on a rural lot, replacing a failing septic system, or need excavation work for a renovation or addition, we provide reliable service throughout the Ottawa area.

Lanark County & Mississippi Mills: Pakenham, Almonte, Appleton, Blakeney, Clayton, Cedar Hill, Ramsay, Carleton Place, Smiths Falls, Merrickville, Beckwith, Lanark Highlands, Hopetown, Middleville, McDonald’s Corners

Renfrew County: Renfrew, Arnprior, McNab/Braeside, and surrounding areas

West Carleton & Ottawa West: Carp, Dunrobin, Constance Bay, Fitzroy Harbour, Kinburn, Galetta, Corkery, Woodlawn, Antrim, Huntley, Kanata, Stittsville

South Ottawa & Leeds-Grenville: Manotick, Greely, Kemptville, North Gower, Richmond

East Ottawa & Prescott-Russell: Cumberland, Rockland, Embrun, Vars, Limoges, Navan

Ottawa: All rural and suburban communities within the City of Ottawa