Sodium in drinking water contributes only a small fraction of the amount of sodium consumed in a normal diet. Sodium in drinking water is not a health concern for most people. However, when sodium is in excess of 20 mg/L in drinking water, it may be significant to those with hypertension, cardiovascular diseases and on a sodium-restricted diet.
Peelís Medical Officer of Health is notified when the sodium levels in the public water supply (e.g., tap water) exceeds 20 mg/L or is significantly different from typical levels in the municipal water system so that local doctors can consult with any of their patients on sodium-restricted diets.
Sodium levels in the Region of Peel municipal drinking water systems can be found at Drinking water testing and services – Region of Peel or you can contact Region of Peel-Public Works Customer Service at 905-791-7800 extension 4865.
If you rely on private wells, you can have your drinking water tested for sodium at a private laboratory: List of Licensed Laboratories | Ontario.ca.