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An Introduction to Cooling Tower Water Treatment

COURSE NO: C05-019
An Introduction to Cooling Tower Water Treatment
Course Highlights

This online engineering PDH course describes water treatment requirements for the most common cooling tower systems, once-through and open recirculating, in industrial applications.


Cooling water systems remove heat generated from a variety of industrial processes. There are three basic types of cooling water systems: once-through, open recirculating, and closed recirculating cooling water systems.


This 5 PDH online course is intended for mechanical engineers and other design and construction professionals seeking an introduction to the technologies, equipment and operational practices for treatment of cooling tower water.

Learning Objectives

This PE continuing education course is intended to provide you with the following specific knowledge and skills:

  • Learning about once-through cooling water systems
  • Learning about open recirculating cooling water systems
  • Learning about natural draft, induced draft, and forced draft cooling towers
  • Knowing the components of typical cooling towers are and their functions
  • Learning about drift eliminators and fill
  • Understanding water treatment requirements for enhanced and super-enhanced chiller condenser tubing
  • Understanding the importance of controlling legionella bacteria
  • Understanding the relationship between evaporation, blowdown and makeup
  • Learning about cycles of concentration and how they are employed in cooling water treatment
Course Document

In this professional engineering CEU course, you need to review the course document titled, "An Introduction to Cooling Water Tower Treatment".

To view, print and study the course document, please click on the following link(s):
An Introduction to Cooling Tower Water Treatment (4.4 MB)
Course Quiz
Once you complete your course review, you need to take a multiple-choice quiz consisting of twenty five (25) questions to earn 5 PDH credits. The quiz will be based on the entire document.


The minimum passing score is 70%. There is no time limit on the quiz, and you can take it multiple times until you pass at no additional cost.
Certificate of Completion

Upon successful completion of the quiz, print your Certificate of Completion instantly. (Note: if you are paying by check or money order, you will be able to print it after we receive your payment.) For your convenience, we will also email it to you. Please note that you can log in to your account at any time to access and print your Certificate of Completion.

To buy the course and take the quiz, please click on: