Mascouche, Quebec

Arsenic: 0 of 17 · Barium: 1 of 17 · Manganese: 1 of 17 · Uranium: 0 of 17 sampled wells above the Quebec standard. Updated 2026-10-17. Source : PACES Laurentides-Les Moulins (2025-04 file).

What wells in this municipality measured in the provincial PACES groundwater surveys. A local picture only: test your own well to know your water.

Arsenic

0 of 17 sampled wells (0%) had a latest result above the Quebec standard of 0.01 mg/L.

Median (latest per well): 0 mg/L
90th percentile: 0 mg/L
Highest: 0 mg/L
Undated: 17 well(s) have no usable sample date; their highest result is used.
Samples: 17
Source: PACES Laurentides-Les Moulins (2025-04 file) (CC-BY 4.0), downloaded 2026-10-17
Standard: Règlement sur la qualité de l’eau potable, annexe 1

Barium

1 of 17 sampled wells (6%) had a latest result above the Quebec standard of 1 mg/L.

Median (latest per well): 0.16 mg/L
90th percentile: 0.4 mg/L
Highest: 3 mg/L
Undated: 17 well(s) have no usable sample date; their highest result is used.
Samples: 17
Source: PACES Laurentides-Les Moulins (2025-04 file) (CC-BY 4.0), downloaded 2026-10-17
Standard: Règlement sur la qualité de l’eau potable, annexe 1

Manganese

1 of 17 sampled wells (6%) had a latest result above the Quebec standard of 0.12 mg/L.

Median (latest per well): 0.0025 mg/L
90th percentile: 0.02 mg/L
Highest: 0.2 mg/L
Undated: 17 well(s) have no usable sample date; their highest result is used.
Samples: 17
Source: PACES Laurentides-Les Moulins (2025-04 file) (CC-BY 4.0), downloaded 2026-10-17
Standard: Règlement sur la qualité de l’eau potable, annexe 1

Uranium

0 of 17 sampled wells (0%) had a latest result above the Quebec standard of 0.02 mg/L.

Median (latest per well): 0 mg/L
90th percentile: 0 mg/L
Highest: 0.0023 mg/L
Undated: 17 well(s) have no usable sample date; their highest result is used.
Samples: 17
Source: PACES Laurentides-Les Moulins (2025-04 file) (CC-BY 4.0), downloaded 2026-10-17
Standard: Règlement sur la qualité de l’eau potable, annexe 1

Includes domestic, municipal and monitoring wells. Total and dissolved results both count. Non-detects count only when the lab's detection limit is at or below the standard. Method: data rules.

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If a result is high: arsenic · manganese · uranium · all guides