Legionella E-News

February 13, 2014

In this Issue:

  1. Two Patient Deaths at an Indianapolis Hospital
  2. Water Temperatures and Legionella
  3. Configure a Highly Credible Legionella HACCP Plan Yourself
  4. Webinar Recording Now Available

1. Two Patient Deaths at an Indianapolis Hospital
An Indianapolis hospital restricted patient showers and baths and provided bottled water for drinking after two patients contracted Legionnaires’ disease last month. Both patients have died. Legionella was found in the hospital plumbing water after the cases were identified. The hospital has implemented procedures to temporarily disinfect its plumbing system. Source: indystar.com

2. Water Temperatures and Legionella
At the first glance, guidelines may lead engineers and facility operators to conclude that controlling Legionella bacteria in plumbing systems can be accomplished long-term by simply raising water heater temperatures.

As with any solution that appears easy and cheap, it is important to check the fine print.

First, understand that water temperatures are just a small part of a comprehensive Legionella prevention program.

Second, understand the limitations of water temperatures in controlling Legionella. Increasing hot water temperatures may not be an option because of regulations. Mixing valves may help with Legionella control in some systems but not in others. And, reducing cold water temperatures may be infeasible or impractical.

Third, don’t assume Legionella control based on temperatures. Even if water can be maintained within the temperature range typically recommended for Legionella control, the results for real plumbing systems will very likely be different than the results for the piping loops set up for the laboratory studies on which the recommended ranges were based.

Water temperature management must be given its proper place within a Legionella prevention program – no more and no less. Target temperatures must be set thoughtfully, achieved safely, and measured. As with the entire Legionella management plan, the effectiveness of water temperatures in controlling Legionella cannot be guaranteed and must therefore be validated rather than assumed.

To comment on this article, go to http://hcinfo.com/water-temperatures-and-legionella.

For more information on the topic, read the PM Engineer article “The fine print: Legionella and water temperatures go hand-in-hand” at http://hcinfo.com/images/stories/pdf/1310PMengineer.pdf.

For comprehensive training about setting and maintaining water temperatures and fixing water temperature problems, register for the self-paced online course “Water Temperatures and Legionella in Plumbing Systems”. Go to http://hcinfo.com/online-courses/courses.

3. Configure a Highly Credible Legionella HACCP Plan Yourself
The Hazard Analysis and Critical Control Point (HACCP) approach has been advocated by the World Health Organization since 2007 for managing Legionella risk in building water systems. It has also been widely discussed among industry groups since the release of the first draft of ASHRAE 188P. HACCP is likely the most legally defensible approach to Legionella management since no other approach has received nearly as much attention or support.

HC Info has introduced new HACCP plan packages for apartment-condo properties, hospitals, hotels, industrial facilities, nursing homes, office buildings, and schools.

Facility operators can easily configure a HACCP plan of the highest quality in just a few hours, for only $997, using the instructions and template. The price includes 120 days of technical support. If you get started and then decide you want onsite assistance, we can refer you to one of our trained Provider Partners.

To get more information and watch a short video about the HACCP plan content, go to http://hcinfo.com/haccp-plans.

4. Webinar Recording Now Available
A recording of the November 21st webinar “Legionella Guidelines, Standards, and Prevention Strategies” can be viewed free of charge at www.hcinfo.com. (Look for the sidebar at the bottom right.) Matt Freije discusses Legionella prevention options in light of scientific findings, current and pending guidelines and standards, and legal risk.

By the way, if you were unable to log in to the live webinar on November 21st, we apologize. We had many more registrants than space and the system cut off logins after reaching capacity. We have taken steps to prevent this problem from happening again.

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