Saint-Jean-sur-Richelieu, Quebec

Fluoride: 2 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.

Fluoride

2 of 10 sampled wells (20%) had a latest result above the Quebec standard of 1.5 mg/L.

Median (latest per well): 0.9 mg/L
90th percentile: 1.8 mg/L
Highest: 2.3 mg/L
Samples: 10, 1973-05-29 to 2010-08-12
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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