Yes. In Ottawa you need a permit to replace a main water service line, and the work must be done by a licensed plumber or approved water/sewer contractor. Because the connection ties into the City of Ottawa's water main, the City controls the tap, the shut-off, and any road or boulevard excavation — so you cannot legally replace the private water service on your own. In practice, homeowners rarely pull the permit themselves; the licensed contractor you hire arranges the plumbing permit through the City and coordinates any road-cut or right-of-way permit needed to dig in the boulevard. The same...
Replacing the main water line — the pipe running from the City water main under the street to your home's shut-off valve — is regulated work in Ottawa. Any plumbing that connects to the municipal system requires a plumbing permit under the Ontario Building Code, and the City of Ottawa administers that permit locally. The private portion of the water service (from the property line to inside your basement) is your responsibility, but replacing it still triggers a permit because it involves connec...
Almost always your licensed plumber or water/sewer contractor pulls the permit and books inspections — it is part of a proper quote. Confirm in writing that the permit and any road-cut permit are included before you sign, and ask that the City inspection sign-off be provided to you when the job clos...
A water service permit in Ottawa covers the replacement or new installation of the pipe connecting your home to the municipal water main, plus the associated shut-off (curb stop) and meter arrangements. The City reviews the proposed pipe size and material, the trench depth relative to Ottawa's frost line (services must sit deep enough to avoid freezing — generally well over a metre down), and how the connection is made at the main. Because our winters drive frost deep, depth and insulation detai...
Many older Ottawa homes — especially in pre-1955 neighbourhoods like Old Ottawa South, the Glebe, Centretown, Hintonburg, and parts of Sandy Hill — still have lead water service pipes. Lead is a health concern, and the City of Ottawa has long run a Lead Pipe Replacement Program to help property owners replace the private-side lead service, often alongside the City replacing the public-side portion. Under this program the City replaces the lead pipe on public property (from the main to the proper...
Replacing only the private half of a lead service can temporarily increase lead levels by disturbing the remaining public-side pipe. That is why the City coordinates full-service replacement — public and private portions together — whenever possible. Ask your contractor to align the private-side wor...
Yes — replacing or repairing your sewer lateral (the private drain connecting your home to the City sanitary or combined sewer) also requires a plumbing permit in Ottawa, and the same road-cut rules apply if the dig crosses City property. Sewer laterals in older Ottawa homes are frequently clay or Orangeburg (tar-paper) pipe that cracks, collapses, or fills with tree roots over decades of freeze-thaw. When a camera inspection confirms a broken lateral, the fix — whether a full open-cut replaceme...
Traditional open-cut replacement digs a full trench from the house to the street, which means tearing up landscaping, walkways, and often the driveway — expensive to restore in Ottawa, especially if interlock or a mature garden is involved. Trenchless methods can avoid most of that. Pipe bursting pulls a new pipe through the path of the old one using entry and exit pits instead of a continuous trench, and is common for water and sewer service replacement. Cured-in-place pipe (CIPP) lining insert...
In 2026, a full main water service replacement in Ottawa typically runs from roughly $6,000 to $18,000+, depending on the length of the run, depth, soil, whether the City boulevard and road must be cut and restored, and whether you choose open-cut or trenchless. Lead-service jobs eligible for the City's program can cost the homeowner considerably less after assistance. Sewer lateral replacement lands in a similar range and can climb higher for long, deep, or road-crossing runs. Permits, locates,...
Yes. Replacing the main water service line requires a plumbing permit from the City of Ottawa, and the work must be done by a licensed plumber or approved water/sewer contractor. If the excavation crosses the City boulevard or road, a separate road-cut/right-of-way permit is also required. Your contractor normally arranges both.
No. Because the private water service connects to the pressurized municipal water main, the work is regulated and must be performed by a licensed contractor under a City permit. DIY replacement is not permitted and risks fines, mandatory re-inspection, and problems at resale.
Yes. Through the City of Ottawa's Lead Pipe Replacement Program, the City replaces the public-side lead pipe at its cost and offers financial assistance or a cost-sharing/loan arrangement toward replacing the private-side lead service into your home. You still need a permit and a licensed contractor for the private-side work.
Yes. Replacing or relining a private sewer lateral requires a plumbing permit and inspection, done by a licensed drain/sewer contractor. If the work touches the City-owned portion of the connection or requires a road cut, the City coordinates that segment and an additional permit applies.
Yes. Trenchless methods like pipe bursting and cured-in-place (CIPP) lining are used in Ottawa and still require a permit and inspection. They avoid a full trench and can reduce driveway and landscape restoration costs, but not every situation qualifies — a camera inspection determines whether trenchless or open-cut is appropriate.