Health assessment of Tee Lake

What is considered a healthy Lake?


A. According to the  biologists of the Québec Ministry of Sustainable Development, Environment, Parks and Fauna

The 4 parameters below indicate the relative age of the lake. Lac Tee is still considered a young lake ( see the yellow squares in the "Classement du niveau trophique"  diagram below. . For a more detailed interpretation of the the meaning of these parameters click here to see explanations from the Ministère de l'environnement du Québec if you can read French or click here for an English explanation ( Ontario Cottage Owners web site)

                                                                                                                                                                                        Station 0379A                            Station 0876B

i) Total Phosphorus                                                                                                                  Tee Lake Status:      3.1 ug/l         (summer 2017)        5.6 ug/l        (summer 2018)

ii) Chlorophyll                                                                                                                        Tee Lake Status:      2. ug/l           (summer 2017)        1.7 ug/l        (summer 2018)

iii) Dissolved organic carbon                                                                                                   Tee Lake Status:       5.4 mg/l       (summer 2017)        4.9 mg/l       (summer 2018)

iv) Transparency of the water in the lake                                                                                  Tee  Lake Status:       4.0 m          (summer 2018)         4.0 m          (summer 2018)

                                                                              For more details see the station data ( available in French only)     Station 0379A data                      Station 0876B data

 B. According to a study conducted by the UQUAT of the surface and underground water of Tee Lake:

The mineral content of the surface water ( lake water)  meets the Health Canada standards for drinking water.

Please note that that this does not mean that the lake water can be consummed as is. 

The level of total coliforms exceeds the Health Canada standards and the water of Tee Lake must be treated before it can be consummed.

For more information on the UQUAT study click here ( French Document).   

C. According to local residents and recreational boaters

A healthy lake is a lake whose water is clear, odorless and contains no bacteria, toxins or other agents that affect health when swimming.

More precisely;

 i. The amount of fecal coliform beings is less than 200 colonies (CFU) per 100 ml of water.  

ii. No blue-green algae were observed in areas where bathing is practiced 

 Condition of the water in the populated area of the lake (west bay) in August 2011: 2 UFC/100ml

Tee Lake Status: : no blue-green algae observed in 2018

D. According to fisherman

A healthy lake has a good amount and variety of fish that are not contaminated with dangerous chemicals and reproduce at a rapid pace.
Click here to access the fisherman's book.

Status of the lake:
A study was conducted in the summer of 2012. Click here to see the list of fish that were found.



Today, the lake is in good health , but we must take good care of it . We must use common sense. We must not dump pollutants such as gas, oil, soap, or raw sewage water in the lake. While it will absord some, there is a limit.

For more information on masures that can be taken to protect the lake see the Québec Ministry of Sustainable Development, Environment, Parks and Fauna

web site


The results presented below are valid up to the specific location on the lake or the sample was taken.
It is possible and probable that the values ​​vary depending on the location on the lake.