Sainte-Gertrude-Manneville, Quebec

Arsenic: 0 of 18 · Barium: 0 of 18 · Fluoride: 0 of 18 · Manganese: 8 of 18 · Uranium: 0 of 12 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 18 sampled wells (0%) had a latest result above the Quebec standard of 0.01 mg/L.

Median (latest per well): 0.0005 mg/L
90th percentile: 0.0028 mg/L
Highest: 0.0066 mg/L
Non-detects: 2 well(s) had a latest result of "not detected" with no detection limit reported; they are counted as below the standard.
Samples: 19, 2006-08-09 to 2011-10-27
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 18 sampled wells (0%) had a latest result above the Quebec standard of 1 mg/L.

Median (latest per well): 0.0145 mg/L
90th percentile: 0.052 mg/L
Highest: 0.26 mg/L
Samples: 19, 2006-08-09 to 2011-10-27
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

0 of 18 sampled wells (0%) had a latest result above the Quebec standard of 1.5 mg/L.

Median (latest per well): 0 mg/L
90th percentile: 0.1 mg/L
Highest: 0.2 mg/L
Non-detects: 2 well(s) had a latest result of "not detected" with no detection limit reported; they are counted as below the standard.
Samples: 19, 2006-08-09 to 2011-10-27
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

8 of 18 sampled wells (44%) had a latest result above the Quebec standard of 0.12 mg/L.

Median (latest per well): 0.077 mg/L
90th percentile: 0.5 mg/L
Highest: 0.57 mg/L
Samples: 19, 2006-08-09 to 2011-10-27
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 12 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 mg/L
Non-detects: 2 well(s) had a latest result of "not detected" with no detection limit reported; they are counted as below the standard.
Samples: 12, 2009-07-16 to 2011-10-27
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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If a result is high: arsenic · manganese · uranium · all guides