Search
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…
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…
*-* SUBSCRIBE TO hEALTH cARE PROVIDER UPDATES *-*
Date
Contents
September 11, 2025
RSV Vaccine Campaign – 2025-2026
Grade 7 and 8 School-Based Immunization Clinics
Rockin’ Recovery Day – September 13
Thunder Bay Perinatal Coalition Events
The BIG Latch – October 7
Pregnancy…
According to a study released today by the Thunder Bay District Health Unit, 65% of homes in Oliver Paipoonge and 17% of homes in Marathon have high levels of radon. The study was conducted in Oliver Paipoonge and Marathon between the fall of 2017 and the spring of 2018, during the home heating…
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…
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.
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…