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Tap water

Water hardnessIs tap water safe?Water quality reportGTA hardness by city

Softeners & filters

Need a softener?Softener costHow softeners workSoftener vs filterWhole-house filtersReverse osmosis

Lead & old pipes

Lead pipesLead pipe replacementKitec plumbingKitec replacement costPoly and galvanized

Basement flooding

Flooding subsidyBackwater valvesBackwater valve costSump pump costBattery backup pumpsSewer backup insuranceWeeping tile costWaterproofing costDownspout rules

Winter & emergencies

Frozen pipesPrevent frozen pipesWater main breaksShut off your waterLow water pressure

Water heaters

Rental buyoutsTankless heater cost

Costs & permits

Plumber costPlumbing permits
  1. Toronto Home Water Guide
  2. Terms of Use

Terms of Use

The Toronto Home Water Guide offers general information about water and plumbing in Toronto homes; by using the site you accept that it is not professional advice.

On this page
  1. Using this site
  2. Not professional advice
  3. Costs and prices
  4. Health and safety
  5. Changes

Using this site

You are welcome to read, link to and share the guides for personal, non-commercial use. Please link to the page rather than copying it in full. The site exists to inform homeowners; it is not a plumbing business, and nothing on it is an offer to do, sell or arrange any work.

Not professional advice

The guides explain what Toronto, Ontario and federal public bodies such as Health Canada publish. They are not plumbing, engineering, legal, insurance or medical advice, and they cannot account for the conditions in your home. Programs, by-laws, fees and policies change; always confirm with the source linked on the page, with 311 or Toronto Building, with your insurer, or with a licensed professional before you act.

Costs and prices

Amounts on this site are in Canadian dollars and come from named public sources, dated as of the source's own date or October 2026. They are not quotes and not estimates for your job. Actual prices vary by home and by contractor; get written, itemized quotes. Subsidy figures describe the City's published rules; the City decides every application.

Health and safety

Do not attempt work that needs a licence or a permit without one. Gas appliances must be handled by a contractor registered with the Technical Standards and Safety Authority, and electrical work is for licensed electricians. Never thaw a pipe with an open flame. For questions about lead or other health matters, contact Toronto Public Health or your doctor.

Changes

The guides are reviewed and updated over time, and these terms may change with them. The site is provided as is, and the editors are not responsible for decisions made on the basis of its general information. Last reviewed October 2026.

More help: see our Toronto home water guide.

Toronto Home Water GuideToronto Home Water Guide

A homeowner guide to water and plumbing in Toronto: tap water and hardness, lead pipes, basement flooding, winter emergencies and costs, built on City of Toronto, Ontario and Health Canada sources.

This site is a homeowner information guide. It is not a plumbing company. About this guide

Tap water and treatment

  • Water hardness
  • Is tap water safe?
  • Water quality report
  • GTA hardness by city
  • Need a softener?
  • Softener cost
  • How softeners work
  • Softener vs filter
  • Whole-house filters
  • Reverse osmosis

Lead and old pipes

  • Lead pipes
  • Lead pipe replacement
  • Kitec plumbing
  • Kitec replacement cost
  • Poly and galvanized

Basement flooding

  • Flooding subsidy
  • Backwater valves
  • Backwater valve cost
  • Sump pump cost
  • Battery backup pumps
  • Sewer backup insurance
  • Weeping tile cost
  • Waterproofing cost
  • Downspout rules

Winter, heaters and costs

  • Frozen pipes
  • Prevent frozen pipes
  • Water main breaks
  • Shut off your water
  • Low water pressure
  • Rental buyouts
  • Tankless heater cost
  • Plumber cost
  • Plumbing permits

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