California Water/Wastewater Operator Vocabulary Game
Exam terms with clues and explanations by OpenExamPrep.
About the California Water/Wastewater Operator Vocabulary Game
A free word game for the California Water/Wastewater Operator exam. Each round shows a clue for one of 20 exam terms across 12 topics. Recall the term, spell it out, then read a short explanation. Rounds pick a random term, so you can keep playing as long as you like.
How to Play
- 1Read the clue and type a term with the right number of letters (3 to 6). Abbreviations count: type the letters only.
- 2Press Check Answer or Enter. Each letter changes color to show how close you are.
- 3You have 6 tries. Stuck? Need a hint? asks the AI tutor for a nudge without giving the term away, and Skip moves to a new term.
- 4After the round, read the explanation, ask the AI to explain it, share your result, or press Next.
- ARight letter, right spot
- AIn the term, wrong spot
- ANot in the term
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Topics in the California Water/Wastewater Operator Vocabulary Game
Regulations and administration
Certification program
Drinking water standards
Water treatment processes
Source water
Laboratory analysis
Water recycling
Wastewater treatment
Wastewater laboratory
Collection systems
Equipment operation
Workplace hazards
Sources for these terms (21)
- About Us (California State Water Resources Control Board) · Source checked 2026-11-04
- Drinking Water Program — Division of Drinking Water (California State Water Resources Control Board) · Source checked 2026-11-04
- Operator-In-Training (OIT) — Wastewater Operator Certification Program (California State Water Resources Control Board) · Source checked 2026-11-04
- Regulating Direct Potable Reuse in California (California State Water Resources Control Board) · Source checked 2026-11-04
- Revised Total Coliform Rule and Total Coliform Rule (US EPA) · Source checked 2026-11-04
- Aquifers and Groundwater (USGS Water Science School) · Source checked 2026-11-04
- Safe Drinking Water Act (SDWA) · Source checked 2026-11-04
- National Primary Drinking Water Regulations · Source checked 2026-11-04
- 5.5 Turbidity (Monitoring & Assessment, EPA archive) · Source checked 2026-11-04
- Understanding Your Annual Water Quality Report · Source checked 2026-11-04
- Consumer Confidence Report Rule Revisions · Source checked 2026-11-04
- Stage 1 and Stage 2 Disinfectants and Disinfection Byproducts Rules · Source checked 2026-11-04
- 40 CFR 141.2 - Definitions (National Primary Drinking Water Regulations) · Source checked 2026-11-04
- 5.2 Dissolved Oxygen and Biochemical Oxygen Demand (Monitoring & Assessment, EPA archive) · Source checked 2026-11-04
- Glossary of Acronyms & Technical Terms (EPA archive) · Source checked 2026-11-04
- Basic Information about Sewage Sludge and Biosolids · Source checked 2026-11-04
- What is a Wastewater Lagoon? (EPA 832-F-25-009, July 2025) · Source checked 2026-11-04
- Sanitary Sewer Overflows (SSOs) · Source checked 2026-11-04
- EPA Needs to Determine What Barriers Prevent Water Systems from Securing Known SCADA Vulnerabilities (EPA OIG Report 2005-P-00002, January 6, 2005) · Source checked 2026-11-04
- 1910.132 - General requirements (Personal Protective Equipment) · Source checked 2026-11-04
- Revised Total Coliform Rule (California State Water Resources Control Board, Division of Drinking Water) · Source checked 2026-11-04
About the CA Water Operator Exam
California water and wastewater operator certification practice covering SWRCB regulations, treatment processes, distribution and collection, lab testing, and safety for T/D grades and Wastewater Grades I-V.
Exam sponsor: State Water Resources Control Board (SWRCB). The requirements and fees below concern the certification or admission exam, separate from our free practice resources.
Assessment
Computer-based exams at Prometric centers: 100 questions for drinking water treatment (T1-T4) and distribution (D1-D5); true/false, multiple-choice and math questions for Wastewater Grades I-V; the T5 treatment exam is a 30-minute oral interview
Time Limit
3 hours (drinking water); 2.5-4 hours (wastewater, by grade)
Passing Score
70% (wastewater: plus 50% of math points)
Exam / Certification Fees
Varies by grade and type; application fee plus exam fee
Exam sponsor websiteFees, eligibility, and exam policies can change. Confirm them with the exam sponsor before applying or paying.
Frequently Asked Questions
Is the CA Water Operator vocabulary game free?
Yes. The game is free to play with no sign-up. Signing in adds AI explanations for any term.
How does the CA Water Operator vocabulary game work?
Each round shows a clue for one of 20 CA Water Operator terms. Guess the term in six tries: green means the right letter in the right spot, yellow means the letter is in the term but in another spot, and gray means it is not in the term. After the round, read the explanation and play the next term.
Where do the CA Water Operator terms come from?
OpenExamPrep researched each term from the State Water Resources Control Board (SWRCB) content outline and primary sources, listed under Sources on this page. The game is independent study material, not an official exam resource.
Who administers California water operator certification?
The State Water Resources Control Board (SWRCB) administers both the drinking water (T and D grades) and wastewater (Grades I-V) operator certification programs in California.
What are the certification types and grades?
Drinking water uses T1-T5 (treatment) and D1-D5 (distribution). Wastewater uses Grades I through V. Each grade requires increasing education, experience, and examination.