Disinfection is one of the most critical steps in water treatment, and chlorine remains the most widely used disinfectant across potable water systems, wastewater treatment, swimming pools, and cooling water applications. Getting the chlorine dose right is important: too little and disinfection is incomplete, too much and there are regulatory, taste, and cost implications. Chlorine controllers automate this balance.

These controllers continuously measure residual chlorine in the water and adjust dosing automatically to keep the chlorine level within the target range. By closing the loop between measurement and dosing, they maintain more consistent disinfection performance than manual dosing allows, and they respond quickly to changes in demand caused by variations in flow rate, organic load, or water temperature.

In potable water treatment, maintaining a minimum residual chlorine level throughout the distribution system is a regulatory requirement. Chlorine controllers help facilities meet this standard reliably without relying on operators to monitor and adjust dosing manually throughout the day.

Swimming pool applications require careful chlorine management to balance effective disinfection with bather comfort. Too much chlorine causes irritation, while too little creates a health risk. A chlorine controller working alongside a pH controller maintains the conditions needed for both safety and comfort.

Cooling water systems use chlorine control to prevent biological fouling in heat exchangers and distribution pipework. Consistent residual chlorine inhibits the growth of biofilm and legionella, which are serious operational and safety concerns in open recirculating cooling systems.

Compatible with sodium hypochlorite, chlorine gas, and other chlorine dosing configurations, chlorine controllers are a straightforward and effective tool for disinfection management across a wide range of applications.