The Water Management Division's mission

To intercept and sanitize urban wastewater in order to ensure respectably hygenic conditions and a healthy future for the population as well as the ecological environment.

Water Management Division

Did you know that

The activated sludge plant was built in 1990 and 1991 at a cost of $14 million.
The department is made up of 4 permanent employees, 3 operators during the week and 1 during the week-ends.
Added to this are 2 temporary employees for replacements.
Every day, we treat over 9,000 cubic metres of wastewater. Every week, we remove more than 2 m3 of waste produced from our fine screening systems and dispose of about 2,000 tons of dehydrated sludge annually by container.
We achieve a rate of over 90% in removing the matter contained in the water.
We perform maintenance on close to forty motors and pumps in addition to 7 pumping stations spread out across the Town’s territory.
Every year, on average, we invest $100,000 in the maintenance and/or replacement of our equipment.
It costs over $100,000 a year to keep all our equipment running on electricity.
For the year 2006, we were able to respect the requirements of the Ministry concerning waste with a score of 98% for the wastewater treatment plant and 100% for the pumping stations.

Wastewater Treatment Plant

Treatment

The wastewater treatment plant serves the Town of Pincourt, the municipality of Terrasse-Vaudreuil and a part of the Town of Notre-Dame-de-l’Île-Perrot via seven pumping stations located on the territory of Pincourt. These wastewaters are transported by separate sewage systems meaning that wastewaters and stormwaters are conveyed towards specific pipelines.

The process uses an activated sludge system. The water undergoes a 3 mm fine screening process and is later directed towards three aeration tanks. The organic matter contained in the water is exposed to bacteria to produce biological floc. A certain amount of dissolved oxygen is required to keep the system in aerobic condition. The waters are then directed towards two sludge lagoons to allow the separation of liquids and solids. The last step is sand filtration.

The solids withdrawn in a sequential manner are concentrated so dehydration can take place before they are discharged to the landfill. This results annually in more than 2,000 metric tons of sludge with a dryness value of over 14%.

Screening

Allows the removal of matters liable to interfere with pumping and treatment. Example: rags, small waste, etc… Over 2 m3 of wastes are removed every week.

Efficiency

For the year 2006, waste requirements established by the Ministry were observed with a rating of 98% for the plant and 100% for the pumping stations as whole. See link.
The removal of phosphorus should be added for the period between May 15 and November 15, for which the standard is 0.4 mg/L.