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The purpose of this study is to determine the prevalence of high levels of radon in Thunder Bay homes. The aim was to develop local recommendations about testing for radon and mitigation, and to inform public policy that would reduce the prevalence of excessive radon. 

The Thunder Bay District Health Unit provides permits for and inspects all new construction in the district to ensure that minimum requirements of the Ontario Building Code are met including regulations regarding the distance between septic and well water. These guidelines are for Class 1…

The Thunder Bay District Health Unit provides permits for and inspects all new construction in the district to ensure that minimum requirements of the Ontario Building Code are met including regulations regarding the distance between septic and well water. These guidelines are for Class 2…

The risk of bed bug problems is higher in certain types of buildings where many different people are staying including hotels, motels and bed-and-breakfast accommodations (e.g. B&Bs).

The risk of bed bug problems is higher in certain types of buildings where many different people are living or staying including apartments, hostels and rooming houses.

Bed bugs are insects with oval-shaped bodies and no wings. Right now, there are no known cases of any infectious diseases being spread to people by bed bug bites.

This document provides some environmental contaminants, where they are found, and how they come in contact with the human body.

This handy checklist can help identify what you are currently doing and what changes you can make to improve your home environment. 

This document provides guidance on how to complete the application for a sewage treatment system in the Thunder Bay District.

There are two ways to get an application package::


Pick one up from the TBDHU office in Thunder Bay at 999 Balmoral Street (Monday-Friday, 8:30am to 4:30pm)…