Longueuil drinking water path

Source

St. Lawrence River Surface water

to plant

Treatment

Usine Mario-Petrone (usine locale) UV · filtration · +2 more plants

finished

Mains

Distribution Agglomeration of Longueuil treats St. Lawrence water at three plants, stores it in six major reservoirs, and distributes via agglomeration transmission mains (~86 km) plus local networks (~1,700 km agglomeration-wide; Longueuil city ~995 km). Serves Longueuil, Boucherville, Brossard, Saint-Bruno-de-Montarville, and Saint-Lambert.

drinking water

Tap

Household tap Longueuil

Source & supply
St. Lawrence River
Agglomeration of Longueuil treats St. Lawrence water at three plants, stores it in six major reservoirs, and distributes via agglomeration transmission mains (~86 km) plus local networks (~1,700 km agglomeration-wide; Longueuil city ~995 km). Serves Longueuil, Boucherville, Brossard, Saint-Bruno-de-Montarville, and Saint-Lambert.
Agglomeration production capacity (N-1) of the three filtration plants is stated at 410,000 m³/day for a served population of about 448,000.
Treatment
Usine Mario-Petrone (usine locale)
Agglomeration filtration plant; UV disinfection added 2015; renamed from usine locale in 2022.
Usine Louise-Gravel (usine régionale)
Agglomeration filtration plant; UV disinfection added 2015; renamed from usine régionale in 2022.
Usine Le Royer
At the tap
Hardness 181 mg/L (Very hard)
Grade B (Good)
pH 7.9 · lead 0.5 μg/L
ECCC / municipal open data (seed)