The Quality of My Well Water
As the owner of an individual well, you are responsible for ensuring its quality with a view to protecting your health and that of your loved ones.
Here you will find all the information you need to meet this obligation. http://www.mddelcc.gouv.qc.ca/eau/potable/depliant/index-en.htm
Booklet that can help you: How-well-is-your-well
Boiling water? Notice-to-boil-water
Assessing the Health of a Lake
It wasn’t until the late 1960ʼs that scientists began studying in earnest the negative impact of human activity on our water systems. In fact, it was through the work done in northern Ontario that we learned about the harmful effects of industry-generated acid rain and phosphorus on our waterways.
Complexity of the Task
Although we now know much more about the many man-made threats facing our lakes and rivers. Accordingly, a myriad of data must be collected and studied to determine its current and future state. These data include:
- ph (ie: alkalinity/acidity);
- levels of phosphorus, chlorophyll a, oxygen, and calcium;
- fish population and reproduction;
- the presence of invasive species, algae, aquatic plants, and periphyton;
- and so on.
For example, a lake can have very good transparency, phosphorus, and chlorophyll a readings but, at the same time, have subsurface rocks covered with thick layers of periphyton, be plagued by large beds of Eurasian milfoil, have a bottom blanketed by decaying organic material, and experience blue-green algae blooms.
If an assessment were based solely on the aforementioned transparency, phosphorus, and chlorophyll a readings, one could easily conclude that the lake in question was in good shape and had low levels of nutrient inflow. However such positive conclusions would conflict with the above-noted and worrisome physical phenomena. The need for caution when assessing the health of a lake is acknowledged by RSVL which is done by one of our members (Johanne) every two weeks during cottage season by stating the evaluation of the nutrient level based solely on physicochemical data (eg: phosphorus readings). But we must also take into consideration certain components of the coastline such as aquatic plants, periphyton, and sediment. Accordingly, one must be very careful when making pronouncements about the state of a lake.
How to limit the spread of Eurasian water-milfoil, a plant that is invading our waterways slowly?
The Eurasian water-milfoil (Myriophyllum spicatum) is an aquatic plant that can grow in different water bodies. They can survive in all conditions, but prefer shallow water rich in nutrients. Given its invasive nature, this exotic plant is a nuisance to and detrimental for our waterways.
The Eurasian water-milfoil is hardy and spreads through cuttings, root suckers or seeds, rapidly covering large areas of the lake. The pieces that fall off or are torn from the plant develop their own roots and may quickly establish themselves wherever the current takes them. They can survive without water for several days and displace existing plants requiring similar sites and nutrition. Once established, it is very difficult to eradicate. There are no miracle solutions but it is important to control its spreading and avoid conditions that would contribute to its growth and development.
Source: Crow and Hellquist, 2000
Here are some suggestions:
- Reduce the input of nutrients into the lake;
- Don’t use fertilizers near lakes;
- Use detergents that do not contain phosphates;
- Ensure that you have a proper septic system and that is in good order;
- Maintain or replant a proper shoreline vegetation;
- Tell your visitors to wash their boat before putting it in our lake. Don’t forget, you must do the same if you bring your boat elsewhere.
As a visual support we are sharing with you a video explaining other invasive species AND MOST IMPORTANTLY, how to STOP their spread on our lake:
O U R A S S O C I A T I O N R E P O R T S
All our documents are in PDF format!
Transparency Testing in Newton Bay:
RSVL (Water Quality on Lake Poisson-Blanc)
DOCUMENTS ARE IN FRENCH:
Website of the RSVL: HERE
2014: Site managed by Parc régional Poisson-Blanc: Poisson-Blanc Lac_771B_2014_SA_SM
Our own site: Poisson-Blanc Lac_771A_2014_SA_SM
2015: Our own site: Poisson-Blanc Lac_771A_2015_SA_SM