Methodology

How we check what is on this site

The closest direct competitor to this site publishes its cost tables under one line: “cost figures are estimates synthesized from public market data using AI research”. No sample size, no sources, no date, no way to check any of it.

This page exists to be the opposite of that sentence.

The rule the site is built around

A page on this site may not state a figure that does not exist, with its source, in a single file called wdfacts.py. That file will not accept a value without the document it came from and the date that document was read. Where a figure cannot be sourced, the page renders a visible {{TODO}} marker and the release check fails. (Those braces are written as HTML entities here precisely so that this sentence does not trip the check it is describing.)

That is a mechanical constraint rather than an editorial intention, which is the point. It is the difference between meaning to be accurate and being unable to publish otherwise.

What was read, and when

Every source below was opened and read on September 20, 2026. The list is generated from the same file the pages draw their figures from, so it cannot drift out of step with what the site actually cites.

1. Insurance Bureau of Canada — Water Damage and Flood Protection — What a standard Canadian home policy covers and excludes; which water perils are optional endorsements.
2. Insurance Bureau of Canada — Flooding and Insurance — Sewer backup and overland flood cover, and what the flood endorsement responds to.
3. Insurance Bureau of Canada — Severe Weather Centre — National insured catastrophe losses, used only as national context.
4. ANSI/IICRC S500 (2021), fifth edition — The standard a restoration scope of work is written against.
5. ANSI/IICRC S500 Consensus Body position statement, March 16, 2026 — Verbatim definitions of Category 3, inspection and preliminary determination, and the ruling that weather-driven water is not automatically Category 3.
6. Health Canada — Guide to addressing moisture and mould indoors — Mould area thresholds, the 48-hour growth window, and the position on air testing.
7. City of Toronto — Basement Flooding Protection Subsidy Program — Subsidy amounts and conditions, for work completed on or after November 12, 2025.
8. City of Toronto — Basement Flooding Protection Program — The City's capital works programme, its 67 study areas and the $68,000 cost-per-benefitting-property prioritisation threshold.
9. City of Toronto — Basement Flooding — Where the City draws the line between its responsibility and the owner's, and what reporting to 311 is for.
10. City of Toronto — Basement Flooding Protection Program — The capital works programme: 67 study areas, the $68,000 per-property prioritisation threshold, and the five-year project list.
11. City of Toronto — Basement flooding — Where the City's responsibility stops, and why to report to 311 even on a private-side failure.
12. City of Toronto — The Sewers on the Street — Combined sewer share, sanitary sewer length and connection count.
13. City of Toronto — Basement flooding — The City's own split of the causes of basement flooding, where its responsibility stops, and the 311 investigation route.
14. City of Toronto — Basement Flooding Protection Program — The capital-works programme: 67 Environmental Assessment study areas 2006–2024 and the $68,000 cost-per-benefitting-property prioritisation threshold.
15. City of Toronto — news release, April 28, 2026 — The superseded $3,400 maximum and the May 1, 2026 application opening.
16. City of Mississauga — Basement Flooding Prevention Rebate — Rebate amounts, the two-option structure and eligibility.
17. Region of Peel — Sanitary backwater valve rebate — The second, separate rebate a Mississauga homeowner can claim.
18. City of Ottawa — Residential Protective Plumbing Program — Rebate amounts under By-law No. 2025-89.
19. City of Ottawa — Residential Protective Plumbing FAQ (PDF) — When backwater valves became mandatory in new build, and where the lateral responsibility line falls.
20. City of Hamilton — Protective Plumbing Program — Grant amounts, eligibility, and the published fee table for five pre-qualified contractors.
21. ProLine Restoration — published severity pricing — One Ontario company's own price list, reproduced with attribution and used nowhere as an average.
22. Insurance Bureau of Canada — How to file a home insurance claim — The claim sequence, the duty to limit further damage, the 30-day proof of loss, and how settlements are paid.
23. Insurance Bureau of Canada — Types of home insurance coverage — The four levels of home cover, additional living expenses, and which water coverages are optional add-ons.
24. City of London — Basement Flooding Grant Program — Eight funded line items, the 90 per cent share, and the condition that construction must not have started.
25. City of Windsor — Basement Flooding Protection Subsidy Program — The $3,500 lifetime maximum, the five line items, and the apply-before-you-build rule.
26. Government of Canada — Get Prepared: Backwater valves — The federal definition of a backwater valve, the two valve types, inspection and cleaning intervals, and the self-flood warning.
27. Government of Canada — Get Prepared: French drains, trench drains and weeping tiles — Federal definitions of three drainage systems that get called by each other's names, and the warning that an existing weeping tile system may not be operational.
28. Government of Canada — Get Prepared: Sump pumps — When a sump pump is the right device, backup power, discharge distance and replacement interval.
29. City of Toronto — Building permit guide: Backwater valve — The fullport normally-open requirement, the prohibition on normally-closed valves, and the published plumbing fee.
30. City of Niagara Falls — Weeping Tile Removal Assistance Program — A municipal programme built specifically around disconnecting weeping tiles from the sanitary sewer, at 100 per cent of eligible costs.
31. EPCOR Edmonton — Backwater valve — Maintenance detail from a water utility outside Ontario: debris in the gate and the condition of the O-ring.
32. Kitec Settlement — Frequently Asked Questions and court notice — The names the system was sold under, how to identify it, the alleged defect and the manufacturer's denial, the US$125 million fund and the closed claims deadline.
33. Nova Scotia Real Estate Commission — About KITEC Plumbing — The 1995 to 2007 sale period, the dezincification mechanism, and the only Canadian regulator statement tying Kitec to insurance and disclosure.
34. Aquatech Waterproofing and Tor Contracting Inc. — published price lists — Two Ontario companies' own published figures for drainage and waterproofing work, reproduced as attributed prices rather than averaged into a market rate.
35. Municipal Act, 2001 — ss. 449 and 450 — The Ontario bar on nuisance claims for escaping water or sewage, and the policy-decision bar on negligence claims.
36. City of Toronto Act, 2006 — s. 393 — The same nuisance immunity, in Toronto's own statute.
37. City of Toronto — Flood Claims and How to File a Claim — Negligence as the test, the 311 report as evidence, and the two-year limitation.
38. City of Hamilton — Property Damage; Sewer Back-Up and Blocked Drains — When Hamilton will consider a sewer backup claim, and who owns the lateral.
39. City of Winnipeg — Private sewer pipe responsibilities; Filing a Claim — The owner's pipe running under the street, the negligence rule and the notice window.
40. City of Calgary — Sewage backups; Basement flooding; Damage claims — Calgary's homeowner-responsibility rule, the property-line split, and its position on sewer backup claims.
41. EPCOR Edmonton — Backwater Valve Subsidy; Flood Prevention Home Inspection — Edmonton's $800 valve subsidy and free inspection service, and the sewer line split.
42. General Insurance OmbudService — Water Damage & Insurance — Neutral definitions of ground water, overland, sewer backup, water infiltration and water escape coverage, and the typical exclusions.
43. Intact Centre on Climate Adaptation (University of Waterloo) — Questions to Ask Your Insurance Provider — The finding that the industry has no standard names for water-damage coverages.
44. Financial Consumer Agency of Canada — Insurance for unexpected events and disasters — Three names for the same flood coverage.
45. City of Saskatoon — Bylaw No. 8880; Protective Plumbing; Sewer Backup; Legal Claim Information — The property-line split, 1966–2004 weeping tile connections, and the claims process.
46. The Cities Act (Saskatchewan) — ss. 22, 303, 307 — The Saskatchewan bar on nuisance and no-fault claims, and the one-year limitation.
47. Alberta Municipal Affairs — Fact Sheet: Polybutylene (Poly-B) Pressure Water Piping — When Poly-B was installed, how to identify it, the fittings reported to fail, its removal from the 2005 National Plumbing Code, and the class action deadlines.
48. Polybutylene settlement — Canadian notice (archive copy) — The C$30 million DuPont settlement in Ontario, British Columbia and Quebec.
49. Insurance Bureau of Canada — Know your home’s history — Poly-B, lead and galvanized steel pipes: why they fail and what to ask your insurer.
50. Health Canada — Lead in drinking water — The 0.005 mg/L guideline, and the Plumbing Code dates for lead pipe, lead solder and galvanized steel.
51. Cities of Toronto, Hamilton, Ottawa, London and Saskatoon — lead service replacement — Who owns which side of the water service, and what each city pays, lends or requires.
52. City of St. Catharines — Flood Alleviation Program and Emergency FLAP — The 90 per cent / $5,000 rebate, its eligible items and conditions, and the $20 million emergency programme after the July–August 2026 storms.
53. Insurance Bureau of Canada — Glossary — Actual cash value, depreciation, replacement cost, guaranteed replacement cost and co-insurance.
54. Insurance Act (Ontario) — s. 1, s. 128, s. 148 statutory conditions, ss. 397–398 — Proof of loss, appraisal, payment timing, the one-year action condition, and adjuster licensing.
55. General Insurance OmbudService — About, How the process works, FAQ, Annual Report — The final position letter requirement, stage deadlines, non-binding recommendations and complaint volumes.
56. Insurance Bureau of Canada — Dispute resolution — The insurer ombudsman → GIO → Superintendent sequence.
57. Limitations Act, 2002 (Ontario) — ss. 4 and 11 — The two-year basic limit, and the pause during an agreed resolution process.
58. Financial Services Regulatory Authority of Ontario — adjuster licensing and the UDAP Rule — Who must be licensed to adjust a claim for a policyholder, and the conduct rules.
59. Act respecting the distribution of financial products and services (Quebec), ss. 48–50 — The two-contract rule and 10-day rescission for public claims adjusters.
60. City of Toronto — Blocked or Backed-Up Basement Drain — The 311 sequence, the four-hour investigation, the CCTV check of the City side, and the cleanout requirement.
61. City of Hamilton — Sewer Back-Up and Blocked Drains (archive copy) — Qualifying defects including City-tree roots, investigation fees, and the CCTV standard.
62. City of Ottawa — Basement flooding (archive copy) — City-owned tree roots, the maintenance list, and clean-out access.
63. Region of Peel — Emergency help with a sewer backup — The published fee for the Region's sewer backup service.
64. City of London — Private Drain Connection replacement — The $7,250 flat-rate City replacement, payable over ten years on property taxes.
65. Condominium Act, 1998 (Ontario) — ss. 89–92, 99, 105; O. Reg. 48/01 — Water escape as a major peril, the standard unit, and the deductible chargeback.
66. Condominium Authority of Ontario — Owners’ and Buyers’ Guides — Improvements, deductible by-laws and Schedule C.
67. Strata Property Act (BC) — ss. 149, 154, 158; Strata Property Regulation — What a strata must insure, and the deductible as a common expense.
68. Province of British Columbia — strata insurance guidance — Deductibles of $100,000 to $750,000 and the not-at-fault rule.
69. Civil Resolution Tribunal and BCFSA — strata deductible cases and report — Nacht, and water damage's share of strata claim costs.
70. Residential Tenancies Acts — Ontario ss. 20, 33, 34; BC ss. 32, 33; Alberta ss. 16, 21 — Who repairs what in a rental, and BC's emergency repair rule.
71. Government of Ontario — Disaster Recovery Assistance for Ontarians — The insurance-first rule, the sewer backup exclusion, 90 per cent to $250,000, and 2026 activations.
72. Province of British Columbia — Disaster Financial Assistance; B.C. Reg. 124/95 — 80 per cent to $400,000, and the list of insurable perils.
73. Government of Alberta — Hazard Assistance and Resilience Program — The replacement of the DRP, the 90/70/50 tiers and the insurable-loss rule.
74. Saskatchewan — Provincial Disaster Assistance Program (2026 guidelines) — $500,000 from April 2026 and the readily-insurable rule.
75. Province of Manitoba — Disaster Financial Assistance; M.R. 42/2025 — The overland flood exception and the $2,500 / 20 per cent deductible.
76. City of Calgary, Government of Alberta, TRCA, Ontario and NRCan — flood mapping — How to check a flood designation, and what the floodway and flood fringe mean.
77. Condominium Property Act (Alberta) — ss. 47, 48; Condominium Property Regulation ss. 60.2, 61, 62.4, 73.91–73.94 — What an Alberta condo corporation insures, and the owner's absolute liability for the deductible up to $50,000.
78. Government of Alberta — Supporting Alberta's condominium communities; CDRT — The chargeback rules in plain language, and the new tribunal.
79. OMAFRA — SepticSmart! Understanding Your Home's Wastewater System (2022) — Ontario's homeowner guide: Part 8, pumping interval, lifespan, symptoms.
80. Ontario Rural Wastewater Centre — homeowner costs — Installed, repair, permit and pump-out cost ranges, shown as theirs.
81. Wellington Source Water Protection — Mandatory Septic Inspection Program — Five-year mandatory inspections and the 78% first-round pass rate.
82. Lake Simcoe Region Conservation Authority — Upgrading Septic Systems — Septic grant: 50% to $2,500 in high-risk areas.
83. Clean Water Program (Oxford) — Septic Systems — Eligibility exclusions: lack of maintenance, property sale, pumping.
84. Sewerage System Regulation, B.C. Reg. 326/2004 — ss. 6, 10 — BC owner's duty to maintain to the plan and keep records; authorized persons.
85. Government of BC — Sewage Systems and Flooding — What to do with a septic system before, during and after a flood.
86. Government of Alberta — Private sewage codes and standards — Alberta's standard of practice and certified-contractor permit rule.
87. Government of Canada, Get Prepared — Foundation maintenance — Cracks, groundwater, DIY limits and when to call a professional.
88. Natural Resources Canada — Keeping the Heat In, Section 6 — Fix basement moisture before insulating; dampness symptoms.
89. Conterra Foundation and Repair; Solution Pro Fissure — published price ranges — Two companies' own crack-repair figures, shown as theirs.
90. IBC — Does my insurance cover damage caused by extreme cold? — Heated portion, furnace repair, and the vacancy exclusion for frozen pipes.
91. IBC — Western Canada deep freeze (2024) — Insured damage from the January 2024 cold snap.
92. GIO — Vacant property risk — The 30-day vacancy convention and the three ways to keep cover.
93. IBC — What to Know About Seasonal Property Insurance — Cottage cover: named perils, frozen pipes, winterizing.
94. Government of Canada, Get Prepared — Eavestroughs and downspouts — Downspout spacing, the 2 m rule, twice-yearly checks, connected downspouts.
95. City of Toronto — Mandatory Downspout Disconnection (and assistance form) — The by-law requirement and the $500 low-income reimbursement.
96. Custom Contracting; Gutter Calgary Rock — published eavestrough prices — Two companies' own installation figures, Ontario and Alberta.
97. Natural Resources Canada — Keeping the Heat In, Chapter 5 (roofs and attics) — Attic frost, air leaks, exhaust fans, ventilation ratio, mould and rot.
98. Natural Resources Canada — Keeping the Heat In, Chapter 6 (crawl spaces) — Crawl space moisture barrier, vents, frozen pipes.
99. Health Canada — indoor relative humidity 30–50% — Humidity target and exhaust fans vented outside, not into the attic.
100. moldguy.ca; Simon Air Quality — published attic remediation prices — Two companies' own attic figures, Toronto and BC.
101. DryShield — crawl space encapsulation cost — One Ontario company's encapsulation ranges.
102. ER Plumbing & Heating; Select Plumbing & Heating; Whyte Mechanical — published repiping prices — Three companies' own Poly-B and Kitec replacement figures, Calgary, Toronto, BC.
103. Natural Resources Canada — Keeping the Heat In, section 5.5 (ice dams) — How ice dams form, where, membranes, and the limits of quick fixes.
104. Health Canada — Guidance for indoor air quality professionals — Why air sampling for mould is of little value; the three remediation steps.
105. bustmold.com — inspection cost — One company's inspection and lab-sample prices.
106. Government of Canada, Get Prepared — Sump pumps (maintenance) — Annual full test, backup checks two to five times a year, discharge and check valve.
107. Government of Canada, Get Prepared — Backwater valves (maintenance) — Clean twice a year, plumber inspection, what to check.
108. Public Health Agency of Canada — Water temperature and burns/scalds — 60 °C at the tank, 49 °C at the tap.
109. Health Canada — residential premise plumbing pathogens (consultation draft) — Proposed: drain and flush tanks per manufacturer; 60 °C minimum.
110. Health Canada — Guide to addressing moisture and mould (basements) — Dehumidifier, storage, carpets, drywall under paint.
111. Government of Ontario — Door-to-door sales and home service contracts — Water heaters as a restricted product; no new contract on a maintenance call; NOSIs.
112. Rideau Valley Conservation Authority — Be prepared — Neighbourhood flood maps for 20 Ottawa neighbourhoods; flood message levels.
113. EPCOR — Flood Mitigation (Edmonton) — Four types of flooding, the $1.6-billion SIRP, and the property checklist.
114. City of Edmonton — Adaptation Plan Path 3 progress (June 2026) — The City's support for updating the provincial flood map.
115. Fraser Basin Council — FloodWise, About Flood Maps in BC — BC's flood mapping history, design floods, and the 2004 shift to local government.
116. Government of BC — Barrowtown Pump Station (2024); Sumas River Watershed initiative — The November 2021 Sumas Prairie flood and what is being built.
117. City of Abbotsford — Sumas Prairie preferred mitigation option — A new Sumas River Pump Station, first.
118. Health Canada — Flood cleanup: keep in mind indoor air quality (2024) — Safety, what to remove, the 48-hour drying window, sewage.
119. City of Calgary — Floodway, flood fringe and overland flow (address search, 311) — How to check a Calgary address, and official vs recommended flood elevations.
120. City of Saskatoon — Protective Plumbing (sump pumps) — Sump outlet distances, testing, maintenance, permits.
121. EPCOR — Weeping Tile and Sump Pumps; City of Edmonton — Sump Pump — The weeping tile flapper, sump pumps since 1988, winter discharge.
122. JZ Plumbing — sump pump replacement cost in Canada (2025) — One company's replacement ranges by city.
123. Restoration Mate — water damage repair cost in Toronto — One Toronto company's restoration bands.

What counts as a source here

In descending order of weight:

1. A government or standards body publishing its own rule. City subsidy amounts from the city, mould thresholds from Health Canada, the water categories from the consensus body that maintains the standard.
2. A municipality publishing prices it negotiated with named contractors. Hamilton does this, and it is the only genuinely measured installed price anywhere in this subject.
3. A trade association describing its own members’ product. The Insurance Bureau of Canada on what a standard policy covers.
4. A named company’s own published price list — reproduced with that company named, every time, and never averaged into anything.

What is not a source: another website’s summary, an industry blog, an unattributed figure, or anything a language model produced without a document behind it.

What we have not measured, and therefore do not publish

This is the list the rest of the category does not print. Every item here is something a reader might reasonably expect to find on a site like this one, and every item is absent for the same reason.

• A national or provincial average restoration cost. We have not run a price survey. Every band on this site is attributed to the company that published it, by name, on the page where it appears.
• Prices by city. The one installed price we can show — Hamilton's pre-qualified contractor table — covers one device in one city. We will not interpolate it into four other cities and call the result a city price.
• Insurance premiums, deductibles or endorsement prices. These are set per policy and per insurer. We describe what the endorsements are and what IBC says they do; we do not quote what yours will cost.
• Claim approval rates, settlement times or adjuster behaviour. We can describe the documents a restorer's own standard tells them to produce. We have no data on what any insurer does with them.
• Anything about the companies that receive an enquiry from this site. We do not rate, rank, score or vet them, and this site says so on every page rather than implying otherwise.

An absent number is more useful than an invented one, because an invented one cannot be distinguished from a real one by the person reading it.

What we read a second time, and what changed

On September 21, 2026 we re-opened the Insurance Bureau of Canada’s water page and read it end to end, rather than only for the specific sentences the first pass needed. That is the “writer and checker are different jobs” rule applied to our own work, and it found real errors in ours.

Three of our figures were wrong by omission. Not invented — each was a true quotation with the other half of the sentence missing, which in two cases reversed the practical meaning. The worst of them would have talked a reader out of a claim they were entitled to make.

We publish this rather than quietly correcting it, because a site whose whole argument is provenance has to show what happens when its own provenance is tested. Every page carrying these figures was rebuilt the same day.

What we could not reach

Where a publisher’s own site could not be read from the machine this site was built on, that is recorded here rather than quietly papered over with a reproduction.

• ottawa.ca. The City of Ottawa's own pages sit behind a bot-protection layer that returned a challenge page rather than content to our build host. The Residential Protective Plumbing amounts were read from the City's own FAQ PDF on documents.ottawa.ca, which was reachable, and cross-checked against the City's indexed page text. The by-law that sets them is linked so you can check it yourself.

How borrowed figures are handled

One Ontario restoration company publishes severity price bands on its own website. Those bands appear on this site, and every single time they appear, the company is named in the same sentence and the figures are labelled as that company’s own published list.

They are never described as an average, a market rate, a typical cost, or what Canadians pay. Turning one company’s price list into “the average cost of water damage restoration in Canada” takes one sentence and destroys the only thing that makes it worth publishing.

Why every figure carries a date

Because these numbers move, and the failure mode is silent. Toronto’s subsidy amounts changed for work completed on or after 12 November 2025. Ottawa’s were reset by a by-law in force from 1 April 2025. A page written in 2024 and never revisited is not obviously wrong to a reader — it is simply wrong.

So the date a source was read appears next to the figure, not only in a footer, and the site is rebuilt from the sources rather than edited in place.

Who writes this

The site is written and maintained by its editorial team. There is no named individual expert on this site, because there is no individual whose professional credential stands behind what is published here — and inventing a reviewer, or borrowing a credential we do not hold, would be a worse dishonesty than the one we are criticising.

What stands behind the pages is the sources, each one linked, each one dated. If a figure here is wrong, it is checkable in one click, and a correction sent to contact@waterdamagequotesca.com will be acted on.

Independence

The only payment this site accepts for an enquiry is a fixed advertising fee, agreed in advance. It does not change with the size of the job, with whether any work is booked, with whether a claim is paid, or with which company receives the enquiry. No company has paid for a mention, and no company is mentioned. The five contractors named on the Hamilton page are named because the City of Hamilton publishes their fees, and they are not endorsed, ranked or recommended here.

The full statement of what this site is, and is not, is linked in the footer of every page.

Last reviewed September 20, 2026.