Val-d'Or, Quebec

Arsenic: 2 of 55 · Barium: 0 of 54 · Fluoride: 3 of 54 · Manganese: 28 of 63 · Uranium: 0 of 45 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

2 of 55 sampled wells (4%) had a latest result above the Quebec standard of 0.01 mg/L.

Median (latest per well): 0 mg/L
90th percentile: 0.002 mg/L
Highest: 0.021 mg/L
Samples: 60, 1994-12-21 to 2010-09-15
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 54 sampled wells (0%) had a latest result above the Quebec standard of 1 mg/L.

Median (latest per well): 0.018 mg/L
90th percentile: 0.085 mg/L
Highest: 0.24 mg/L
Samples: 59, 1994-12-21 to 2010-09-15
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

3 of 54 sampled wells (6%) had a latest result above the Quebec standard of 1.5 mg/L.

Median (latest per well): 0.1 mg/L
90th percentile: 0.3 mg/L
Highest: 2.1 mg/L
Samples: 59, 1994-12-21 to 2010-09-15
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

28 of 63 sampled wells (44%) had a latest result above the Quebec standard of 0.12 mg/L.

Median (latest per well): 0.082 mg/L
90th percentile: 0.474 mg/L
Highest: 3.224 mg/L
Samples: 70, 1994-12-21 to 2010-09-15
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

0 of 45 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: 0.0011 mg/L
Samples: 46, 2006-10-23 to 2010-09-15
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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