24 | FEATURE— April 2018
extreme the best action. Others decide to just retest, hoping
the results get better. And some waste money on expensive
but ineffective changes.
Thorough and properly interpreted analytics are the key
to smart remediation. For example, compare domestic wa-
ter Legionella positivity and concentrations for hot versus
cold water, buildings, and outlet types. The facility with the
results shown in the chart above should consider replac-
ing shower hoses more often since they had higher pos-
itivity than showerheads over several sampling rounds,
and either discontinuing the piped-in water dispensers or
replacing them with a different model.
Using analytics to pinpoint the root of problems allows
you to solve problems faster, more effectively, and at
much lower cost.
Facilities that implement water management programs
based on a smart hazard analysis and with smart control
measures, training, execution, documentation, validation
and remediation will reduce health and legal risks without
wastefulness.
Matt Freije is the founder and CEO of hcinfo.com and the
content director for LAMPS, a cloud-based application
used by thousands of professionals for water management
plans, analytics, and training. He has written, presented,
and consulted on Legionella risk management since 1995.
This article was excerpted and adapted with permission
from "Complying with CMS, ASHRAE 188, and New York
Legionella Requirements: 7 Keys to Real Success" (https://
hcinfo.com/blog/complying-new-legionella-standards/).
Comparison of POU types: Legionella Positivity and Average Concentrations
Image from, LAMPS (lamps-hcinfo.com)
© HC Information Resources Inc.
Positivity Average Concentration Per
Positive Sample in Unit Recorded
Drinking Fountain Water dispenser piped Shower head Faucet-foot pedal
Faucet-manual handle Ice machine ice & water Faucet-automatic/electronic Shower hose
39%
(11/28)
42%
(10/24)
88%
(7/8)
0%
(0/8)
100%
(8/8)
100%
(12/12)
75%
(6/8)
75%
(6/8)
12 12
15 14 16
57
68
100
80
60
40
20
0
i
