Water & Sewer Line Trenching
Trenches for new or replacement water and sewer services, from the house to the municipal connection or to your own well and septic.
No published New Brunswick trenching prices turned up. Machine time is the best-published price: about $65 to $150 for a mini excavator with operator and $150 to $250 for a standard machine (national and Atlantic guides, September 2026).
Find an Excavation ContractorAbout Water & Sewer Line Trenching
A water or sewer trench looks simple and is not: it has to be deep enough, it has to cross whatever else is buried in the yard, and in most New Brunswick towns the connection itself is a municipal permit with its own rules.
The rules change by town, so check yours. In Fredericton, new water and sewer services are installed by the City's Water & Sewer Division, a site servicing plan goes in with the building permit, and the owner pays once the work is done. Saint John requires a permit for all new, renewal or repair water, sanitary and storm sewer installations. Quispamsis charges a residential water meter connection fee and a sewer connection fee.
Riverview says a permit may be required to tap into water and sewer mains. Moncton lists water and sewer connections as a roadwork and utility permit. Who is allowed to dig which side of the property line was not published for any of these towns, so ask your municipality before you hire.
Locates come first. Book Info-Excavation (3 working days' notice) and NB Power separately (five business days). Private lines you or a past owner put in are not marked by NB Power.
Any trench 1.2 m or deeper that a worker enters must be shored, sloped or benched, or cut in solid rock, under WorkSafeNB's Regulation 91-191, and a worker on the surface must be able to see anyone working in the trench.
No published New Brunswick trenching prices turned up. Machine time is the best-published price: published rates run about $65 to $150 an hour for a mini excavator with operator and $150 to $250 for a standard machine.
What This Work Covers
- New and replacement water service trenches
- Sewer lateral trenches to the municipal connection
- Lines to a private well or septic tank
- Trench shoring, sloping or benching where workers enter
- Backfill and surface clean-up
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What this work costs
Common questions about water & sewer line trenching
- Replacing an old water service to the street in Saint John, what permit?
- When is a permit needed to tap a water main in Riverview?
- Trench for a new sewer connection keeps caving in Fredericton, why?
- Shoring versus a trench box on a Saint John sewer job?
- Replacing a water line under a paved driveway in Riverview?
- Price of a water line trench to a detached garage in Oromocto?
- How is rock removed from a sewer trench in Saint John?
- Running a water line to a barn on a Sussex property, where to start?
Other Excavation Services
Foundation & Basement Excavation
Digging for a new home, an addition or a garage foundation: the hole, the footings, the spoil pile and the backfill that has to wait for the inspection.
Septic System Excavation
The digging side of a septic job: test pits, the tank hole and the field, done for a provincially licensed installer, never instead of one.
Lot Clearing & Grading
Clearing trees, stumps and brush and shaping the ground so water runs away from the house, with the permits some towns and the WAWA rule require.
Driveway Excavation & Base
Digging out a new or failing driveway and building the gravel base under it, with the curb-cut or entrance permit your road needs.
Drainage & Weeping Tile Digs
Digging along the foundation or across the yard to replace weeping tile, fix drainage and get water away from the house.
Rock Breaking & Removal
Breaking ledge and boulders with a hydraulic hammer, or blasting by a certified blaster, when rock sits where the foundation or trench has to go.
Backfill & Haul-Away
Filling back against a foundation after the inspection, bringing in gravel or fill, and trucking surplus soil and rock off the property.
Ready to Get Started?
Tell us about your water & sewer line trenching job and we'll send it to local excavation contractors in New Brunswick. They reply by email.