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  • Disinfectant Type by City - Alberta, Canada

    City Disinfectant Type Latest Source
    Airdrie Chlorine Calgary (Airdrie) Water Treatment Plant Summary
    Beaumont Chloramine Edmonton Metropolitan Region (Beaumont) Water Quality Report
    Brooks Chloramine Brooks Water Quality Analysis
    Calgary Chlorine Calgary Water Treatment Plant Summary
    Camrose Chloramine Email confirmation from the City of Camrose (Dec. 2025)
    Chestermere TBD
    Cold Lake Chlorine Email confirmation from the City of Cold Lake (Dec. 2025)
    Edmonton Chloramine Edmonton Water Quality Annual Report
    Fort Saskatchewan Chloramine Edmonton Metropolitan Region (Fort Saskatchewan) Water Quality Report
    Grande Prairie Chlorine Grande Prairie Water Quality Certificate of Analysis
    Lacombe Chlorine Red Deer (Lacombe) Drinking Water Parameters Report
    Leduc Chloramine Edmonton Metropolitan Region (Leduc) Water Quality Report
    Lethbridge Chloramine Lethbridge Annual Water Quality Summary
    Lloydminster Chlorine Lloydminster Annual Drinking Water Quality Report
    Medicine Hat TBD
    Red Deer Chlorine Red Deer Drinking Water Parameters Report
    Spruce Grove Chloramine Edmonton Metropolitan Region (Spruce Grove) Water Quality Report
    St. Albert TBD
    Wetaskiwin Chloramine Email confirmation from the City of Wetaskiwin (Dec. 2025)

    Understanding the data - Chlorine & Chloramine

    The disinfection of city drinking water is a two-part process. Step one, usually called primary disinfection, is the process where a city treats the water it draws from the environment to destroy all pathogenic organisms - bacteria, cysts, viruses, etc.  For the vast majority of cities in Canada, this is accomplished using free chlorine. Free chlorine is an aggressive oxidizer and essentially destroys the tissues of these organisms and kills them.

    But just killing the organisms at the water extraction point isn't enough. This water now has to travel through thousands of kilometres of pipe to reach every home in the city. To ensure that the treated water isn't contaminated on its journey, the city adds a residual disinfectant that travels with the water as it's distributed.

    When we talk about Chlorine vs. Chloramine we're talking about the choice of the residual disinfectant. Most cities in Canada still use chlorine as the residual, but more and more cities are making the move to Chloramine. Why?

    Simply put - Chloramine persists in the water longer than Chlorine. It's a more stable molecule and won't naturally dissipate into the air or aggressively react with every compound or surface it comes into contact with. This means that chloramine added at the source is much more likely to be present at the point of use - your home. More persistence = better disinfection = safer citizens.

    But the stability of chloramine also makes it a lot hard to remove from water than chlorine. Both compounds are removed well using activated carbon, but chloramine removal necessitates the use of a special type of activated carbon called catalytic carbon.

    Here at Aquatell, we sell multiple different systems that can be used for the removal of chlorine and chloramine. These systems fall into two broad groups - systems that treat the water for your whole home, and those that treat the water for a single dispensing point (these are usually called point-of-use systems).