Lachute drinking water path

Source

Municipal tubular wells (Lachute / Argenteuil wellfield) Groundwater

raw water

Intake

Municipal wells groundwater pumping

to plant

Treatment

Usine Dudany / Poste de production d'eau … chlorination · UV · filtration

finished

Mains

Distribution Serves Lachute and Brownsburg-Chatham. City publishes source vulnerability docs, annual quality bilans, and coloured-water guidance; filtration station and main replacements address sediment remobilization.

drinking water

Tap

Household tap Lachute

Source & supply
Municipal tubular wells (Lachute / Argenteuil wellfield)
Serves Lachute and Brownsburg-Chatham. City publishes source vulnerability docs, annual quality bilans, and coloured-water guidance; filtration station and main replacements address sediment remobilization.
Lachute’s wells feed neighbouring Brownsburg-Chatham—and the city spent over $5M on biological iron/manganese filters at Usine Dudany to quiet the coloured-water complaints common on iron-rich groundwater.
Treatment
Usine Dudany / Poste de production d'eau potable — Ville de Lachute
MELCC registry: chlorination and ultraviolet disinfection (X2118199). 2020–2021 upgrade added biological filtration for iron and manganese (~$5.2M) to cut coloured-water episodes. Also feeds Brownsburg-Chatham distribution.
Treatment on record: chlorination · UV · filtration
At the tap
Hardness 133 mg/L (Hard)
Grade B (Good)
pH 7.1 · lead 0.5 μg/L
ECCC / municipal open data (seed)