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NEW GUIDANCE as of May 2025 - Please review carefully
NEW resources: This page contains NEW guidance documents and NEW notification forms as updated in May 2025.
Online notification only: The notification forms for organizers, food vendors and pesonal services vendors are only avaiable…
Many homeowners in the Thunder Bay District rely upon septic systems, or onsite sewage treatment systems, to treat and disperse their sanitary wastewater.
Approval for in-ground sewage treatment and dispersal is required in all parts of Ontario, including the unorganized lands.
TBDHU…
Beach Notifications
The Thunder Bay District Health Unit will notify the public of any issues concerning beaches tested by the Health Unit.
Beach advisories will be issued in beaches outside of Thunder Bay (with the exception of private beaches and provincial parks) when recreational water…
Special Event Notification Required
- Visit TBDHU.com/specialevents where you will find all of the information required if you or your business is providing any body art or salon services at a special event like a festival or fair where these services will be available to the general public.
-…
Blue-green algae (BGA) are microscopic organisms found naturally in lakes and streams. They are usually found in low numbers but can rapidly increase in warm, shallow, surface water that receives a lot of sun. When this happens, they can form blooms that make the water look like green pea soup or…
This guideline provides infection control guidelines for child care facilities licensed for more than 5 children.
Updated: April 2023
August 23, 2019 - The Ministry of the Environment, Conservation and Parks has confirmed the presence of blue-green algae in Hawkeye Lake. The MECP continues to investigate whether the blue-green algae identified is a toxin-producing strain. When blue-green algae is present in water, it is important…
August 28, 2019 - The Ministry of the Environment, Conservation and Parks has informed the Health Unit that the toxin analysis of the blue-green algae bloom on Hawkeye Lake has shown that toxins were not present in the sample. Note that this result reflects the water conditions when the lake was…
August 29, 2019 - The Ministry of the Environment, Conservation and Parks has confirmed the presence of blue-green algae in a water sample collected at the Northwest Side of Lower Shebandowan Lake on August 23, 2019. The MECP is conducting toxin analysis on the water sample. However, it is…
August 30, 2019 - The Ministry of the Environment, Conservation and Parks has confirmed the presence of blue-green algae in a water sample collected at Icarus Lake on August 25, 2019. The MECP is conducting toxin analysis on the water sample. However, it is important to remember that water should…
September 23, 2019 - The Ministry of the Environment, Conservation and Parks has confirmed the presence of blue-green algae in a water sample collected at Surprise Lake on September 17, 2019.The MECP is conducting toxin analysis on the water sample. However, it is important to remember that water…
August 26, 2020 - The Ministry of the Environment, Conservation and Parks has confirmed the presence of blue-green algae in a water sample collected at Warnica Lake on August 13, 2020. The MECP is conducting toxin analysis on the water sample. However, it is important to remember that water should…
September 1, 2020 - The Ministry of the Environment, Conservation and Parks has confirmed the presence of blue-green algae in a water sample collected at Icarus Lake on August 24, 2020. The MECP is conducting toxin analysis on the water sample. However, it is important to remember that water should…
September 1, 2020 - The Ministry of the Environment, Conservation and Parks has confirmed the presence of blue-green algae in a water sample collected at Madelaine Lake on August 25, 2020. The MECP is conducting toxin analysis on the water sample. However, it is important to remember that water…