This book was written with the objective to help anyone who wants to take and pass their water treatment grade 1 or 2 test. This book is compiled from my personal notes that I took during my time studying this subject and my personal research on the topic. I have condensed my notes into a form that is easy to read and follow with the hopes to aid you in passing your test like I have. This book is not a supplement for normal textbooks but rather a short guide for quick reference on the subject of water treatment. Using these notes, in addition to immense studying of the Sacramento State Water Treatment textbooks, I passed my treatment grade 2 test with an 95%. I believe in order to succeed you must be dedicated to studying. The inconvenience now will be well worth it in the future.