Thanks very much for your answer, very appreciated.  The water is pumped to a reservoir or storage, and the chlorine residual is currently being measured after the contact tank, yes. Sorry to ask, but could you please clarify why if it's pumped the Ct is not necessary?  Thank you very much again. Gloria

Published by

Thanks very much for your answer, very appreciated. 

The water is pumped to a reservoir or storage, and the chlorine residual is currently being measured after the contact tank, yes.

Sorry to ask, but could you please clarify why if it's pumped the Ct is not necessary? 

Thank you very much again.

Gloria