In Ottawa the owner is responsible for the water pipe from the house to the water shut-off valve, and the City owns it from that valve to the main. The City's Lead Pipe Replacement Program offers a full replacement of both portions or a private-only replacement with a rebate. The City says about 15 percent of homes were built with lead service pipes, up to the 1950s (as checked September 2026).
- Ottawa splits ownership at the water shut-off valve, not at a stated property line.
- The program offers full (private and public) replacement, or private-only replacement with a rebate.
- When a water main is replaced the City replaces its portion, but the private lead stays unless the owner pays to replace it.
- Homes built after 1958 are described as little or no risk, though some on older mains may still have a lead public portion.
- A result of 5 parts per billion or more on a City test brings a free pitcher and about a year of NSF 53 filters.
01 /Where does the City's part of the service end in Ottawa?
Ottawa draws the line at a valve. The City's Lead Pipe Replacement Program FAQ says property owners are responsible for the pipe from their home to the water shut-off valve, called the private portion, and the City owns and maintains the pipe from the shut-off valve to the watermain, called the public portion. That valve is the curb stop, the buried valve normally reached through a small box near the front of the lot.
The City estimates that approximately 15 percent of Ottawa homes were originally built with water service pipes made of lead, a practice that continued up until the 1950s. It describes homes built after 1958 as at little or no risk, while noting that some newer homes connected to older mains may still have a lead public portion. The identification guide shows how to check the pipe you can see.
02 /What are the two ways to replace a lead service in Ottawa?
The Lead Pipe Replacement Program offers a full replacement, in which both the private and the public portions are replaced, and a partial replacement, in which only the private portion is replaced and the owner receives a rebate. The FAQ adds that when a water main is replaced or upgraded, the City replaces the public portion, and unless the homeowner pays to have their portion replaced, it remains lead. Waiting for main work can therefore leave a home half done.
The FAQ says preparatory work cannot be included as part of the rebate or loan, and a "Connect at Post" proof is needed to claim the rebate. Where the City works on public property it reinstates with topsoil, sod, gravel and asphalt only, so interlock, plantings or decorative surfaces on the boulevard are the owner's to restore. We could not verify the current rebate amount or loan terms when checking in September 2026, because the City's program pages did not load; confirm them through 311 before you budget.
03 /What does a replacement cost in Ottawa?
The City's FAQ asks the question but does not give a number; it says the cost depends on the length and depth of the pipe. Depth matters more in Ottawa than in milder cities because services are buried below frost. Lengths vary with the setback of the house from the valve. Published figures from other Canadian cities, and the network's planning ranges, are on the cost page.
Ask each contractor to state the method, whether the trench runs under a driveway, how they will cross the curb-stop area, whether a new main shut-off valve is included, and which restoration is theirs and which the City does. The replacement process guide has a fuller checklist.
04 /How do I get my water tested in Ottawa?
Residents can request a water quality test from the City. If the City's test finds lead at 5 parts per billion or more at the tap, or if you join the full replacement, the City provides a reusable pitcher and approximately a one-year supply of filters certified to NSF 53. Five parts per billion is the same as Health Canada's guideline of 0.005 milligrams per litre. The testing guide explains why results vary from one sample to the next.
- Call 3-1-1 or email info-water@ottawa.ca to ask for a test and your address's record.
- Check the pipe at your meter with the Lead Water Line Check.
- For health questions, especially with young children or during pregnancy, call Ottawa Public Health at 613-580-6744.
- Decide between full and private-only replacement, confirm the rebate or loan terms, and get written quotes.
To collect quotes for the private portion, send your details.
05 /What should Ottawa owners confirm by phone?
Because the City's program pages could not be read when this page was checked, confirm the current rebate or loan amounts, eligibility, and the proof needed for the rebate through 3-1-1 before signing a contract.
FAQQuestions people ask
Who owns the lead pipe in front of my Ottawa house?
The City owns the pipe from the water shut-off valve to the main; you own it from your home to that valve.
Which Ottawa homes might have lead water pipes?
Mostly homes built up until the 1950s. The City describes homes built after 1958 as at little or no risk, with some exceptions on older mains.
Does Ottawa give free water filters for lead?
Yes, a pitcher and about a year of NSF 53 filters if a City test finds 5 ppb or more, or if you join a full replacement.
What happens to my lead pipe when Ottawa replaces the water main?
The City replaces the public portion. Your private portion stays lead unless you pay to replace it.
