Resources
Everything on the site that is not a practice test. Study guides that go deeper than the answer explanations, calculators that show their working, printable PDFs, and the official certification links for every state.
r/Water_Operators →
Our subreddit. Exam questions, war stories and process troubleshooting with other operators.
Calculators
Dosage, detention time, pipe flow, SDI and LSI. Each one shows the formula so you can check your own arithmetic.
Water Operator Math
Eleven modules working every exam formula by hand, taught by a licensed operator. Module 3 is free to watch.
Downloads
The practice tests as printable PDFs, with a full answer key and an explanation on every question.
Reciprocity
Whether your license transfers, and the official link for every state certification program.
AWWA Sections
Every local AWWA chapter, linked. Training, conferences and the people who run certification in your area.
Study Guides
Process diagrams, worked math, regulatory context and what the exam actually asks. These go deeper than the answer explanations.
About
Who builds this and why. Written by a licensed operator who has worked in water since 2009.