Water tests and participation in the Quebec government's Réseau de surveillance volontaire des lacs (RSVL)


For several years, APLC, in partnership with the Municipality of Messines, has participated in the programme of Réseau de surveillance volontaire des lacs (RSVL) du Ministère de l’Environnement et de la Lutte contre les changements climatiques du gouvernement du Québec.

The objectives of this program are:

  • Acquire data in order to establish the trophic level of a large number of lakes and follow their evolution over time;
  • Identify lakes showing signs of eutrophication and degradation;
  • Educate, raise awareness, support and inform local residents' associations and other participants.

Although being a natural process, the eutrophication of a lake can be affected by human activity which causes important ecosystem changes (example: increase of phosphorus and nitrogen by bad skeptical installations). This participation in the RSVL allows us to collect data on our two lakes by the annual measurement of water transparency. Also, water samples are analyzed and measured for total phosphorus, chlorophyll-a, and dissolved organic carbon. These are collected for two consecutive years followed by a four-year break before starting the cycle again.

Following these analyzes, additional measures can be put in place to maintain or improve the condition of our lakes and minimize the impact of human activity.

View test results for:  (French only)