How do you Convert figure ppm of clorine in water?

To convert parts per million (ppm) of chlorine in water to a concentration in milligrams per liter (mg/L), you can use the fact that 1 ppm is equivalent to 1 mg/L in water. Therefore, if you have a concentration of chlorine measured in ppm, that number directly represents the concentration in mg/L. For example, if the water has 3 ppm of chlorine, it contains 3 mg/L of chlorine.