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Fluoride is added to prevent dental cavities.
Fluoridation
Chloramine (a mild disinfectant) is added to keep the water safe as it travels throughout the distribution network.
Secondary Disinfection
The water’s pH is adjusted to protect water pipes and household plumbing from corrosion.
pH Correction
Chlorine is added to get rid of any remaining microorganisms.
Primary Disinfection
Water then flows through several filters removing 99.99% of fine particles.
Filtration
Heavy particles sink to the bottom of the settling tank and clear water is collected from the top. Approximately 95% of the impurities are removed at this stage.
Sedimentation
Small impurities such as organic matter, algae, and bacteria are captured.
Coagulation & Flocculation
Ottawa River water enters the treatment plant through a large intake pipe with a screen that removes objects such as weeds or fish.
Intake