The level of chlorine existing in the distribution system after chlorination at the drinking water treatment plant. The residual chlorine level will be a function of the level of microorganisms and the potential for additional THM formation in the distribution system.
The amount of measurable chlorine remaining after treating the water with chlorine. The amount of chlorine left in the pool or spa water after the chlorine demand has been satisfied.. SESQUICARBONATE Sodium Sesquicarbonate - A chemical mixture of equal parts of soda ash and sodium bicarbonate used to increase pH and total alkalinity in pool and spa water. It has a pH of 10.1.
The amount of measurable chlorine remaining after treating the water with chlorine. The amount of chlorine left in the pool or spa water after the chlorine demand has been satisfied. Includes hypochlorous acid (HOCl), hypochlorite ion free and total chlorine and all combined chlorine.