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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.
The Thunder…
DineWise 3.0 - Updated Operator Education Package
As of March, 2025 the Operator Education Package has been updated.
The document includes two (2) changes to DineWise that are outlined on page four (4).
To download the updated package, click on the image below:
expand_moreBackground…
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…
Our lakes are great places to relax, cool down, and have some family time during the summer. But bacterial infections such as E. coli can put a damper on the fun. Our role is to monitor public beaches within the city and district (with the exception of beaches within provincial parks) and alert…
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…
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…