Legionella Management in Building Water Systems. The Role of Chlorine Products
The American Chemistry Council has released a new document, Legionella Management in Building Water Systems: The Role of Chlorine Products , prepared by Dr. Joseph Cotruvo.
It summarizes Legionella management approaches for plumbing systems including chlorine products and Copper/Silver, and is aimed at helping building managers with a practical understanding of what the major mitigation choices are and some of the selection factors to consider when dealing with mitigation contractors.
It includes information on the pros and cons for each discussed technique: free chlorine, chloramine, chlorine dioxide, and copper-silver ionization. Chloramines appear to be generally favored after heat or chemical shock treatment for long term maintenance of plumbing systems for legionella control, but each situation should be evaluated for the optimal choice and results before a decision is made. Treatment of only the hot water system plumbing is often sufficient, but corrosion management for control of lead releases should be assessed if drinking (cold) water plumbing is also being treated. Cooling towers should also be managed because of risks from airborne exposure to the blow down vapors in the vicinity.
FULL DOCUMENT IS ATTACHED
The American Chemistry Council SOURCE