Trécesson, Quebec

Arsenic: 0 of 14 · Barium: 0 of 14 · Fluoride: 0 of 14 · Manganese: 2 of 14 · Uranium: 0 of 10 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 14 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: 0.0018 mg/L
Highest: 0.01 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: 14, 2006-10-04 to 2011-10-19
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 14 sampled wells (0%) had a latest result above the Quebec standard of 1 mg/L.

Median (latest per well): 0.0095 mg/L
90th percentile: 0.013 mg/L
Highest: 0.022 mg/L
Samples: 14, 2006-10-04 to 2011-10-19
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 14 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 mg/L
Highest: 0.1 mg/L
Non-detects: 3 well(s) had a latest result of "not detected" with no detection limit reported; they are counted as below the standard.
Samples: 14, 2006-10-04 to 2011-10-19
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

2 of 14 sampled wells (14%) had a latest result above the Quebec standard of 0.12 mg/L.

Median (latest per well): 0.0135 mg/L
90th percentile: 0.094 mg/L
Highest: 1.2 mg/L
Samples: 14, 2006-10-04 to 2011-10-19
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 10 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
Non-detects: 3 well(s) had a latest result of "not detected" with no detection limit reported; they are counted as below the standard.
Samples: 10, 2009-07-15 to 2011-10-19
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