Ron George, CPD, president of Plumb-Tech Design & Consulting Services LLC, is a hot water expert and ASSE 12080 Legionella Water Management Specialist. Visit www.plumb-techllc.com for more information.
We now know that storing water at 110 F, as was called for in many energy conservation mandates in the 1970s, can lead to an increase in Legionella bacteria growth in the hot water storage and distribution systems, which could eventually lead to outbreaks.
Safe drinking water is a precious commodity. Yet there are no universally recognized and accepted international standards for drinking water. Even where standards do exist and are applied, the number, types and permitted concentrations of contaminants covered may vary significantly from one standard to another.