What criteria should be used to select the chlorination point?

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Choosing where to chlorinate depends on how water quality and system hydraulics will interact with the disinfectant. Turbidity affects chlorine demand and disinfection efficiency; a chlorination point downstream of where turbidity has been reduced helps ensure the dose is effective without wasting chlorine. Distance from the reservoir also matters because you want sufficient mixing and adequate contact time to inactivate pathogens, while avoiding excessive transit that could allow residuals to decay. Operational conditions matter too—moderate pressure and minimal variation in water flow support consistent mixing and dosing, and accessibility for maintenance and inspection ensures the chlorination equipment can be kept reliable and tested regularly. Because each of these factors influences the effectiveness and reliability of disinfection, all of these criteria are relevant.