Hamilton · Ontario

Sewer backup and basement flooding in Hamilton: the City's claim rule, its grant, and the only published prices

Hamilton publishes the smallest per-property maximum of the Ontario cities with a page here — $2,000, against Mississauga’s $7,500 — and publishes by some distance the most useful document in Canadian municipal flood-protection writing.

It lists, by name, what each of its five pre-qualified contractors charges to assess and fit a backwater valve. That is a real quoted price for a real device from a real firm, which is something this entire vertical otherwise does not have.

The only measured installed price in this vertical

Five named firms, one city, one device, published by the municipality that pre-qualified them: $1,292 to $1,562 plus HST for an assessment and a mainline backwater valve, across five pre-qualified contractors. The adapt-a-valve variant runs from $1,292 to $2,505 plus HST across the same five firms, and the adapt-a-valve requires City pre-approval.

On top of that the City publishes a $291 building permit fee and downspout disconnection at $75 + HST per downspout.

Two things are worth saying plainly about this table, because the rest of the category would not say either.

First, the spread. The dearest mainline installation on the City’s own approved list is about 21 per cent above the lowest, for the same work, from firms the same City pre-qualified. Anybody telling you there is a going rate for this is guessing.

Second, the sample. Five companies in one city is five companies in one city. It is not a Canadian average and we do not present it as one, which is the whole difference between this page and the pages that publish national cost tables assembled from nothing. Why we refuse to do that.

Those fees added up into whole-job totals — valve, permit and downspouts, for each of the five firms and both valve types — with the depth rule that decides which valve a house gets, the 4 per cent loan and the City’s maintenance schedule, are on backwater valve installation in Hamilton.

The contractor rule that costs you three quarters of the grant

Hamilton’s grant has a structure none of the other cities here use, and it is the single most consequential thing on this page.

Choose a contractor from the City’s pre-qualified list and you are eligible for the full $2,000. Choose your own and you are eligible for $500 for a backwater valve installation.

That is a difference of $1,500 for the same device, decided entirely by which company holds the wrench. Given that the City also publishes what those five firms charge, a homeowner in Hamilton has more information available before committing than a homeowner anywhere else on this site — and more to lose by not using it.

The City is careful to note that there is no contract between the contractor and the City under this programme: any agreement is a private contract between you and the firm, and disputes go to the contractor first. Pre-qualified means pre-qualified, not guaranteed, and this site does not recommend any of them.

When the City of Hamilton pays for a sewer backup, and when it will not

Before the grant, the question most people bring to a Hamilton page after a backup is whether the City is going to pay for it. The City answers that in writing, and the answer turns on a single fact: where the blockage was.

That is a narrow door. A storm that surcharges the sewer with nothing blocked, or a blockage anywhere in your own pipe, is outside it. And in Hamilton more of the pipe is yours than people expect:

The Ontario law behind the rule

Hamilton is not being unusually strict. Since the 1990s the Municipal Act has barred nuisance claims against any Ontario municipality for water or sewage escaping from a sewer, which leaves negligence — and Hamilton’s blockage rule is its practical test for it.

What the City tells you to do instead

Your insurer can pay under your policy without anyone proving fault and pursue the City itself if it thinks the City was responsible — but only if the policy carries the sewer backup endorsement, which a standard policy does not include. How Hamilton’s rule compares with Toronto, Ottawa, London, Winnipeg, Calgary and Edmonton is on is the city responsible for a sewer backup?

The Sewer Lateral Management Program, in one paragraph

Hamilton’s Sewer Lateral Management Program is the City’s process for blocked or defective laterals, and it is narrower than its name suggests. It investigates the lateral and decides whose defect it is; it does not pay for flood damage — the City says basement flooding claims go to Risk Management Services instead. A qualifying defect means a structural problem in the public portion or roots from a City-owned tree. If one is found, the investigation is not invoiced; if the defect is on the private side only, or caused by what went down the drain, it is. An owner who hires their own licensed plumber for the investigation may be reimbursed some or all of the cost, and where City-tree roots damaged the private side and the owner replaces or relines all of it, a one-time partial reimbursement may be available. The details, in the City’s words, are below.

When it backs up in Hamilton: the order of things

The City’s own pages, read together, give a sequence. The warning usually comes first:

Slow floor drains or fixtures that gurgle are the lateral telling you it is narrowing. That is the moment to have it investigated, not after the basement is wet. Hamilton is specific about what a proper investigation includes:

The recording matters for two reasons. It shows where the blockage or defect is — which, under the City’s blockage rule above, decides whether a claim is even considered. And it decides who pays for the investigation itself:

The one defect the City treats as its own even on your side of the pipe is a tree it owns:

So in Hamilton the order after a backup is: photograph and keep the damaged property, as the City asks; call your insurer; have the lateral investigated on camera; and only if the recording shows a blockage in the City sewer, or a qualifying defect such as City-tree roots, put a claim in writing to Risk Management Services. A clogged lateral with nothing wrong on the City side is the owner’s, and so is the bill — which is why the clogged sewer line and sewer camera inspection pages exist.

Eligibility, the 2012 line, and the loan

Hamilton’s conditions include one that none of the other cities here apply in the same form.

Your home must have been built before 1 January 2012. The reasoning is the same as Ottawa’s note that valves became mandatory in new sanitary construction from 2012: newer houses are presumed to have one already, so the grant is aimed at the stock that does not.

Single-family residential, with a basement, connected to the City sewer system, property taxes up to date, and not currently in the process of adding a secondary dwelling unit.

The grant is paid to the property owner, who is responsible for paying the contractor. You are not being billed through the City.

And if the eligible work exceeds the grant, Hamilton runs a separate loan programme of up to $2,000 for eligible costs on top. Given the published contractor prices, a mainline valve plus a permit plus a couple of downspouts lands close enough to the $2,000 ceiling that the loan is not theoretical.

One useful detail: if you have had a backwater valve grant before and some of the $2,000 remains against the property, the remainder can still be put towards disconnecting downspouts.

How Hamilton compares with the other 4

Hamilton publishes a maximum of $2,000 per property. Of the 3 cities with a page on this site that publish a per-property maximum, that puts it third — last. The highest of the others is Mississauga at $7,500; the lowest is Toronto at $6,650.

Hamilton has the smallest published per-property maximum of the Ontario cities with a page here and publishes the most. It is the only city here that tells you in advance what the work costs, and the only one where your choice of contractor changes the grant by three quarters. In information terms it is the most fully documented programme on the site.

What none of this does for you

Every dollar on this page buys a device that reduces the chance of water arriving. None of it pays for the damage if it arrives anyway, and in Canada that is a separate purchase that a standard policy does not include.

How Hamilton compares with the rest of the province, including two municipalities without a page here: six Ontario programmes compared.

Which of the water perils you actually had decides whether any of the repair is claimable, and that is a separate question from the subsidy. Twelve situations, and what the policy calls each one.

So the complete answer for a Hamilton homeowner is both: the device, part-funded by the City, and the sewer backup endorsement, bought from your insurer. Doing one and not the other is a half-measure in either direction.

And if water is in the building now, the clock is Health Canada’s rather than your insurer’s: mould begins to grow in an area with excessive moisture within 48 hours. Your policy separately “requires you to act to limit any further damage”. What that means in practice is on our duty to mitigate page.

Questions people actually ask

Where to read next

• What a sewer backup actually is
• The endorsement the devices do not replace
• What restoration work costs, and whose figures those are
• Toronto’s programme
• Mississauga’s programme
• Ottawa’s programme
• London’s programme