Lévis, Quebec

Arsenic: 0 of 38 · Barium: 7 of 46 · Fluoride: 3 of 34 · Manganese: 27 of 61 · Uranium: 0 of 28 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: 0.002 mg/L
Highest: 0.004 mg/L
Non-detects: 31 well(s) had a latest result of "not detected" with no detection limit reported; they are counted as below the standard.
Undated: 2 well(s) have no usable sample date; their highest result is used.
Samples: 57, 1987-12-01 to 2012-06-08
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

7 of 46 sampled wells (15%) had a latest result above the Quebec standard of 1 mg/L.

Median (latest per well): 0.2528 mg/L
90th percentile: 1.4 mg/L
Highest: 7.9 mg/L
Non-detects: 1 well(s) had a latest result of "not detected" with no detection limit reported; they are counted as below the standard.
Undated: 2 well(s) have no usable sample date; their highest result is used.
Samples: 67, 1987-12-01 to 2012-06-08
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 34 sampled wells (9%) had a latest result above the Quebec standard of 1.5 mg/L.

Median (latest per well): 0.41 mg/L
90th percentile: 1.09 mg/L
Highest: 2.39 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: 49, 1987-12-01 to 2012-06-08
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

27 of 61 sampled wells (44%) had a latest result above the Quebec standard of 0.12 mg/L.

Median (latest per well): 0.08 mg/L
90th percentile: 0.6542 mg/L
Highest: 9 mg/L
Non-detects: 5 well(s) had a latest result of "not detected" with no detection limit reported; they are counted as below the standard.
Undated: 2 well(s) have no usable sample date; their highest result is used.
Samples: 99, 1978-10-01 to 2012-06-08
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 28 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: 0.009 mg/L
Highest: 0.02 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: 53, 1993-03-26 to 2012-06-08
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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