Tenants in Ontario can take practical steps to reduce the risk of hot water scalds while understanding who is responsible for safe temperatures and repairs. This guide explains common causes of scalds in rental homes, the landlord responsibilities under provincial law, and clear actions you can take as a renter — from checking taps and thermostats to requesting repairs and documenting hazards. If you are moving or reviewing listings, Find rental homes across Canada on Houseme to compare units with modern water controls and safer fixtures. Throughout the article you will find when to contact the Landlord and Tenant Board and which official forms or government pages to consult for help.[1]
Why hot water scalds happen in rentals
Scalds occur when water delivered from taps or showers is too hot for the skin to tolerate. Older water heaters set at high temperatures, missing mixing valves, faulty thermostats, and poorly maintained plumbing increase risk. Tenants should be aware that sudden changes in pressure or temperature when someone else uses water (e.g., toilet flush, dishwasher) can cause a brief surge of very hot water.
Landlord and tenant responsibilities in Ontario
Under the Residential Tenancies Act, 2006 tenants are entitled to a unit in a good state of repair and fit for habitation, and landlords are responsible for maintaining systems that affect health and safety, including hot water supply and plumbing. For details and to learn how the Landlord and Tenant Board handles disputes, see the official board page and the statute.[2]
When a repair is the landlord's duty
- Check whether the issue affects basic habitability, such as lack of hot water or water that is dangerously hot; those issues are typically the landlord's responsibility.
- Submit a written repair request describing the temperature problem, when it happens, and any safety concerns.
- Keep dated photos, videos, or logs showing temperature changes and times to support any later dispute.
Practical prevention steps for tenants
Start with simple checks before asking for repairs: test hot-water temperature with a thermometer, note how long it takes to cool, and see whether temperature spikes when other fixtures run. Recommended safe tap temperature for most adults is below 49°C (120°F) to reduce scald risk; lower settings are safer for children and seniors. If the water heater is set too high or lacks a functioning thermostat or mixing valve, ask your landlord to correct it.
- Allow hot water to run for 30–60 seconds and measure at the faucet to get a consistent reading.
- Request installation or repair of anti-scald mixing valves or a thermostatic mixing valve if temperatures are unsafe.
- Contact the landlord immediately for urgent safety fixes and follow up in writing.
What to do if your landlord doesn't act
If the landlord does not arrange timely repairs after a written request, tenants can escalate the issue. For health-and-safety hazards that present immediate danger, contact emergency services or local public health if necessary. For tenancy remedies, the Landlord and Tenant Board can hear applications about repairs, maintenance, and tenant compensation. Before applying, collect your written requests, photographs, temperature logs, and any communication with the landlord to support your case.[2]
Tools, tests, and documentation
Use a reliable water thermometer or infrared thermometer, a simple logbook to record readings, and photos or short videos showing temperature equipment and settings. If a licensed technician inspects the system, ask for a written report. These materials make it easier to show a tribunal or inspector the scope and duration of the hazard.
Useful tenant actions
- Keep a dated log of temperature readings at different times of day and when other fixtures are used.
- Send repair requests by email or registered mail so you have proof of delivery and retain copies.
- Allow reasonable access for inspections or repairs after proper notice from the landlord.
FAQ
- Who is responsible for fixing a water heater that delivers dangerously hot water?
- The landlord is generally responsible for maintaining heating and plumbing systems so the rental unit is in a good state of repair; tenants should notify the landlord in writing and keep copies.
- Can I lower the water temperature myself if the landlord delays repairs?
- Only take temporary safety steps that do not damage the property (for example, using a thermostat on a faucet or a bath thermometer). Do not make permanent changes or remove safety devices; inform the landlord in writing first.
- What evidence helps if I file an application with the Landlord and Tenant Board?
- Provide dated written repair requests, temperature logs, photos or videos, technician reports, and any medical notes if someone was scalded.
How-To
- Measure the hot-water temperature at each faucet or shower using a thermometer and record the results with date and time.
- Send a clear written repair request to your landlord describing the temperature readings and the safety concern; keep a copy.
- Follow up by phone if urgent, then confirm the conversation in writing with dates and times of calls.
- If the landlord arranges a repair, document access dates, work done, and keep any receipts or technician reports.
- If the landlord does not act, prepare an application with your documentation and file with the Landlord and Tenant Board.
