Is this a printed book or a digital book?
It’s a digital book: PDF by email. Both bonus books are PDFs too. You can print them.
Can I read it on my phone?
Yes. Each topic has its own page, and you can zoom in on any drawing or formula. You can also read the PDFs on a tablet or computer.
Will it help if I haven’t done math in years?
The book starts with reading a problem, units and conversions, then uses the same four steps in its worked examples. Before buying, look at the sample math pages shown here to judge the starting level and how each step is explained. It is an operator study guide, not a complete basic math course.
How do I receive the material?
The book and both bonus books are sent as PDFs to the email address you enter at checkout.
Does it fit my state’s operator exam?
It is a general U.S. study aid, not a state-specific exam course. Before buying, get the current exam outline from your state’s operator certification agency. Check the certification type—drinking water treatment, distribution, wastewater treatment or collection—and your grade or class. Then compare its required topics with the full contents shown here. Grade I and II labels are not equivalent in every state. Drinking water, wastewater, distribution and collection certifications are usually separate, and this book does not cover every state exam.
How much of the book is wastewater?
Four of the 12 parts are wastewater only: collection, headworks, primary treatment, activated sludge, lagoons, nutrients, effluent and biosolids. Math, lab and safety topics are shared.
Is this an official exam guide?
No. This is an independent, unofficial study guide. Buying or completing it does not award an operator certificate or continuing education credit. Certification requirements are set by your state. The guide is not affiliated with or endorsed by WPI, ABC, AWWA, WEF or the EPA. Practice questions are original, not official exam questions.
Does it replace training or plant procedures?
No. It supports study and review. It does not replace required training, supervised practice, your plant’s procedures, your permit or directions from qualified staff.
Can I use it to help train a new hire?
Yes. Print the pages you need and go through them together: follow the plant on the drawing, then work the math in the same 4 steps. Instead of a stack of scattered notes, the next hire has one route to follow. It adds to your plant’s training and procedures; it doesn’t replace them.
Is this a one-time payment?
Yes. The book and two included bonus books are a one-time purchase, with no subscription.
Where do the numbers in the book come from?
Federal rules and limits are cited from EPA 40 CFR Parts 141, 143, 133, 136 and 503 and OSHA 29 CFR 1910.146, 1910.147 and 1910.1000, and are labeled federal in the book. Formulas and typical operating ranges come from state training manuals and EPA fact sheets; ranges are labeled as ranges, not rules. Your state, your permit and your plant may have stricter requirements.
