Source
Treatment
Mains
Tap
Lac Davignon (reservoir on Rivière Yamaska Sud-Est, created 1969)
Lac Davignon is both the drinking reservoir and a recreation lake (no gas motors).
Cowansville's drinking lake is an artificial reservoir built on the Yamaska Sud-Est specifically to secure municipal supply.
Usine de filtration de Cowansville
Full municipal filtration plant with modern process controls; >8,500 m³ reservoir storage before distribution and booster stations.
Treatment on record: filtration
Hardness 96 mg/L (Moderate)
Grade B (Good)
pH 7.3999999999999995 · lead 0 μg/L
ECCC / municipal open data (seed)