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Smoking + Radon = Dangerous combination

Statistically, 1 in 20 people who have a high concentration of radon gas in their homes will develop lung cancer. However, if you smoke on top of this, your chances of developing lung cancer are 1 in 3. Don’t let the two leading causes of lung cancer stand…

Emergency Preparedness

expand_moreMake A Plan



Take time to consider what you will do if you or a family/household member becomes sick and needs care.
If you are responsible for dependents, including young children or elderly relatives, consider putting in place alternative care plans should you…

Regular testing of your private well is important to make sure your water is safe for you and your family to drink. Bacteria such as E. coli can contaminate your well making it unsafe to drink. The risk is higher if you have animals in the area – especially on farms with livestock and other animals…

Like public beaches, pools and other artificial recreational waters are great places to have fun and cool off in the summer. However, they can also be a breeding ground for recreational waterborne illnesses (RWIs), including a wide variety of infections such as gastrointestinal, skin, ear,…

The effects of pesticides (including herbicides, fungicides and insecticides) on human health are complex and not completely understood. However, there are clear links between pesticide use and illness. The Thunder Bay District Health Unit’s role is to provide recommendations and information about…

We all deserve safe drinking water. One of the Thunder Bay District Health Unit’s role is to prevent and reduce water-borne illness related to drinking water. The TBDHU does this in a number of ways, including:


Surveillance and inspection of drinking water systems;
Timely response to drinking…

West Nile Virus is transmitted, or spread, to humans through a bite from an infected mosquito.

TBDHU has been monitoring the local mosquito population for many years to identify any risk. This is done by trapping mosquitos and testing them. To date, West Nile Virus is not endemic in our area and…



Mould in the corner of a room.


Mould is a health hazard. It is a type of fungus – or more accurately, a group of different kinds of fungi – that can grow in damp areas in public places and in your home. The Thunder Bay District Health Unit’s role is to:


Inspect public areas as necessary and…

Home. It’s where we should feel most safe – and part of the Thunder Bay District Health Unit’s role is to help you keep it that way. Possible health hazards in your home such as those listed below are either preventable or can be planned for. Whether you are a homeowner or a tenant, all it takes is…

Bed bugs are insects with oval-shaped bodies and no wings. Unlike most public health pests, bed bugs are not known to transmit or spread disease. However, they are certainly a pest - feeding on blood, causing itchy bites and generally irritating their human hosts and they can cause other…

Rodents and insects can be a big problem for both homeowners and business owners. The Thunder Bay District Health Unit provides information about prevention and control, and public health inspectors inspect businesses in the District – particularly restaurants and food vendors – for signs of pests…

The environment affects our children more than it does adults for various reasons (read on below). The Thunder Bay District Health Unit’s role is to inform the public about these risks and provide information on how to reduce them. We want to help you ensure your children – and all children living…

Ammonia is a colourless gas with a very distinct odour. People may readily recognize this smell because it is used in many household cleaners and window cleaning products. High levels of airborne ammonia gas can dissolve in water to cause corrosive ammonium hydroxide. Most people smell ammonia…

Radon is an invisible, odourless radioactive gas that can be found in homes across Canada. It is produced naturally in the ground as uranium breaks down. The resulting gas can seep through cracks in the foundation, pipe openings, sump pits, and other openings into your home. Although it is present…

Ticks are Present in Thunder Bay and District
The percentage of blacklegged ticks In the City of Thunder Bay area infected with Borrelia burgdorferi (the causative agent of lyme Disease) is greater than 40% as of 2023.
 
The City of Thunder Bay and immediately surrounding area are…