La Malbaie, Quebec

Arsenic: 0 of 38 · Barium: 0 of 38 · Fluoride: 2 of 36 · Manganese: 0 of 38 · Uranium: 2 of 38 sampled wells above the Quebec standard. Updated 2026-10-17. Source : PACES – Projets d'acquisition de connaissances sur les eaux souterraines (MELCCFP), compiled database.

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 38 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: 0.0016 mg/L
Non-detects: 36 well(s) had a latest result of "not detected" with no detection limit reported; they are counted as below the standard.
Samples: 40, 2013-06-27 to 2014-06-18
Source: PACES – Projets d'acquisition de connaissances sur les eaux souterraines (MELCCFP), compiled database (CC-BY 4.0), downloaded 2026-10-17
Standard: Règlement sur la qualité de l’eau potable, annexe 1

Barium

0 of 38 sampled wells (0%) had a latest result above the Quebec standard of 1 mg/L.

Median (latest per well): 0 mg/L
90th percentile: 0.021 mg/L
Highest: 0.054 mg/L
Non-detects: 22 well(s) had a latest result of "not detected" with no detection limit reported; they are counted as below the standard.
Samples: 40, 2013-06-27 to 2014-06-18
Source: PACES – Projets d'acquisition de connaissances sur les eaux souterraines (MELCCFP), compiled database (CC-BY 4.0), downloaded 2026-10-17
Standard: Règlement sur la qualité de l’eau potable, annexe 1

Fluoride

2 of 36 sampled wells (6%) had a latest result above the Quebec standard of 1.5 mg/L.

Median (latest per well): 0.2 mg/L
90th percentile: 0.6 mg/L
Highest: 1.6 mg/L
Non-detects: 4 well(s) had a latest result of "not detected" with no detection limit reported; they are counted as below the standard.
Samples: 38, 2013-06-27 to 2014-06-18
Source: PACES – Projets d'acquisition de connaissances sur les eaux souterraines (MELCCFP), compiled database (CC-BY 4.0), downloaded 2026-10-17
Standard: Règlement sur la qualité de l’eau potable, annexe 1

Manganese

0 of 38 sampled wells (0%) had a latest result above the Quebec standard of 0.12 mg/L.

Median (latest per well): 0.0006 mg/L
90th percentile: 0.0062 mg/L
Highest: 0.019 mg/L
Non-detects: 14 well(s) had a latest result of "not detected" with no detection limit reported; they are counted as below the standard.
Samples: 40, 2013-06-27 to 2014-06-18
Source: PACES – Projets d'acquisition de connaissances sur les eaux souterraines (MELCCFP), compiled database (CC-BY 4.0), downloaded 2026-10-17
Standard: Règlement sur la qualité de l’eau potable, annexe 1

Uranium

2 of 38 sampled wells (5%) had a latest result above the Quebec standard of 0.02 mg/L.

Median (latest per well): 0 mg/L
90th percentile: 0.013 mg/L
Highest: 0.022 mg/L
Non-detects: 26 well(s) had a latest result of "not detected" with no detection limit reported; they are counted as below the standard.
Samples: 40, 2013-06-27 to 2014-06-18
Source: PACES – Projets d'acquisition de connaissances sur les eaux souterraines (MELCCFP), compiled database (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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