Online Courses

Discount Packages

Ethics, Laws and Rules

Live Webinars

Video Presentations

Interactive Courses

OH Timed & Monitored

Courses by Provider

A Guide to Rainwater Harvesting

COURSE NO: C06-014
A Guide to Rainwater Harvesting
Course Highlights

This online engineering PDH course introduces the basic principles of residential and small-scale commercial rainwater harvesting system design. The design process includes choosing system components in the most cost effective and advantageous manner. It is intended to serve as a first step in consideration of the use of rainwater harvesting systems. The information in this course may be useful in planning and sizing of rainwater harvesting systems.


Rainwater harvesting is an ancient technique enjoying a revival in popularity due to the inherent quality of rainwater and interest in reducing consumption of treated water.  Rainwater collection has numerous benefits such as free supply, low mineral and sodium content, reduction in non-point source pollution, and reduced demand on water utilities.


This 6 PDH online course is intended for use by civil and environmental engineers, design professionals, construction personnel and others interested in learning about the best management practices for rainwater harvesting.

Learning Objectives

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

  • Learning about the basic rainwater system components including catchment surface, gutters, and downspouts, leaf screens, first-flush diverters, roof washers, storage tanks and pressure tanks and pumps
  • Learning about treatment and disinfection equipment
  • Knowing the water quality standards as well as the factors affecting water quality
  • Learning about water treatment, water capturing system capabilities, rainfall distribution and calculation of storage capacity
  • Estimating water demand
  • Understanding the rainwater harvesting best management practices and building codes
  • Learning about cistern design, construction and capacity
  • Learning about backflow prevention systems, dual-use systems and required rainwater harvesting systems
  • Learning about cost estimation and comparison, financial incentives, tax exemptions and municipal incentives
  • Familiarizing with rainwater harvesting case studies
Course Document
In this professional engineering CEU course you will need to review the course document titled, "A Guide to Rainwater Harvesting", which is based on the publication titled, "Texas Manual on Rainwater Harvesting", third edition, published by the Texas Water Development Board in 2005.
To view, print and study the course document, please click on the following link(s):
A Guide to Rainwater Harvesting (3 MB)
Course Quiz
Once you complete this course review you will need to take a multiple choice quiz of thirty (30) questions to earn 6 PDH credits. The quiz will be based on this Texas Water Development Board publication.
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: