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Water Supply Plumbing Cross Connections
Steven G. Liescheidt, P.E., CSI-CCS, CCPR.
Overview
Plumbing cross-connections, which are defined as
actual or potential connections between a potable and non-potable water supply,
constitute a serious public health hazard. There are numerous, well documented
cases where cross-connections have been responsible for contamination of
drinking water, and have resulted in the spread of disease. The problem is a
dynamic one, because piping systems are continually being installed, altered, or
extended. Control of cross-connections is possible, but only through thorough
knowledge and vigilance. Education is essential, for even those who are
experienced in piping installations fail to recognize cross-connection
possibilities and dangers.
In this course the student will learn some of the
basic principles of plumbing cross connections. The document provides multiple
examples of cross-connection illustrations and provides a discussion of the
cause of flow reversal and suggested corrective actions. In addition there is
a discussion of the various cross-connection prevention methods and devices that
can be used to prevent backflow.
The student is expected to read and review the
material contained in the Cross-Connection Control Manual Environmental
Protection Agency, EPA 816-R-03-002 --- February 2003
The student must take a multiple-choice quiz
consisting of twenty (20) questions at the end of this course to obtain 4 PDH
credits.
Specific Knowledge or Skill Attained
This course teaches the following specific knowledge and
skills:
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Public Health
Significance Of Cross-Connections
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Theory Of Backflow
and Backsiphonage
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Methods and Devices
for the Prevention of Backflow and Backsiphonage
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Testing Procedures
for Backflow Preventers
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Administration of a
Cross-Connection Control Program
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Cross-Connection
Control Ordinance Provisions
Course
Click on the URL below to access the
Cross-Connection Control Manual published by the
U.S. Environmental Protection Agency.
Cross-Connection Control Manual (1.4 MB)
You may need Acrobat Reader to view this document.
Click on the link below to download a free copy of Acrobat Reader.
To obtain PDH credits for this course, you will need to take a quiz for
credit. Click on the link below.
(To take the quiz,
your web browser must be set to accept cookies. See how to
check your cookie settings.)
 
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