rss Blog

Articles in support of small community water and wastewater operators.

A Review of the EPA's New Drinking Water Training System

A Review of the EPA's New Drinking Water Training System

The newest tool released by the EPA allows operators to learn about national primary drinking water regulations through an online and self-paced training system. According to the EPA, this system was developed at the request of states, water associations, and operators. Stakeholders wanted operators to have accessible regulatory training easily available to an industry where shrinking resources and a retiring workforce make taking time away from water facilities difficult.

Approximately 130 training modules on various drinking water rules make up the system. The modules runs well in most browsers as long as Adobe Flash is installed and running. Both audio and closed captions are available during the training with the option to run the modules at your own pace. To use this system, each operator will have to create their own account using an email address that has not been registered prior.

The system has a fairly easy setup. When an operator signs in, the homepage shows an Announcements section that will update users on new modules or changes to the system. Operators can design their own lesson plan for the regulations that apply to their system under the Curriculum Builder. The Builder asks questions about the system type, source water, and treatment methods. A new curriculum can be made and started at any time with each curriculum found under the Curriculum List.

Usually 5-15 modules will make up a curriculum. Each module will cover a different rule with a quiz of 4-5 questions at the end. The operator must answer each question correctly to pass. If operators want to run through the modules individually they can find a list under the Course Catalog tab, however this mode does not offer quizzes or completion credit by the system. A complete list of training modules available as of May 2019 can be found here.

An interesting feature to note about the training is that within each module slide includes the CFR citation number so operators can find the corresponding rule in the Code of Federal Regulations. It should also be noted that these topics cover federal regulations only and do not apply to states with stricter drinking water requirements.

When a training has been completed, the Certificates tab will create a print out certificate of the desired curriculum. The only drawback for operators is that this training is not pre-approved for CEUs in any states as of yet. To provide credit, a state primacy will have to review each of the 130 modules. The next plans for this training system involves designing new modules on Special Drinking Water Topics. While these modules have yet to be developed, drinking water operators can look forward to those resources in the future!

Operator Math Part 1: Practical Guidelines

Mathematical calculations can be a challenge for even for the most veteran of water and wastewater operators. The formulas for volume, chemical dosage, filtration, pipe velocity, and other daily problems vary of course, but there are a few underlying guidelines that can help you make sure your answer is correct regardless of the calculation you’re working on. 

This is the first in a three-part series dedicated to operator math. The tips below are adapted from information provided by the South Dakota Department of Environmental and Natural Resources.

  1. Learn what a formula means, not just when it is used. This will help you remember when to use πR2H to calculate the volume of a cylinder instead of 2πRH—the formula for measuring the surface area of a cylinder’s sides.
  2. Use unit labels throughout your calculation to help you easily see whether you need to multiply or divide.
  3. Always convert percentages to decimals.
  4. Convert “inches” to “feet” unless you’re trying to solve a pressure problem. Using “inches” in any other problem will almost always leave you with the wrong answer.
  5. Make sure the units you end with match the problem you are trying to solve. If a volume calculation results in a “square feet” or “square yards” answer, something went wrong along the way.
  6. Trust your suspicions. If the answer doesn’t seem right, check that you used the right formula and units before running the problem again.

For those looking for more detailed and specific instruction, our documents database is a great place to start. Here are some of the resources you’ll find if you search “math.”

Basic Math Handbook

This 24-page handbook is a basic math study tool. It provides formulas for basic geometry, velocity & flow rates, and pressure, force & head, and contains several typical water problems that show users how to apply the formulas in real-world scenarios. 

Formula and Conversion Sheet for Drinking Water Treatment and Distribution

This 1 page document provides conversions and formulas for water treatment & distribution operators in studying for a certification exam. 


Chlorine Contact Time Calculations

This 7-page document provides guidelines on how to solve math problems that deal with calculating chlorine contact time. It includes important equations and practice problems with solutions. 


Industrial Math Formulas

This 7-page document provides a list of valuable formulas and conversion factors important for wastewater operators. 


Intermediate Water Math

This 37-page study guide contains 82 intermediate water math questions. Solutions to the problems are provided at the end of the document. 


Advanced Wastewater Math

This 29-page study guide contains 35 advanced wastewater math questions. Solutions to the problems are provided at the end of the document.