Colorado Water/Wastewater Operator Vocabulary Game
Exam terms with clues and explanations by OpenExamPrep.
About the Colorado Water/Wastewater Operator Vocabulary Game
A free word game for the Colorado Water/Wastewater Operator exam. Each round shows a clue for one of 20 exam terms across 7 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 Colorado Water/Wastewater Operator Vocabulary Game
State credentialing
Federal rules
Source water
Laboratory analysis
Safety procedures
Treatment process
Equipment operation
Sources for these terms (19)
- Stage 1 and Stage 2 Disinfectants and Disinfection Byproducts Rules · Source checked 2026-11-04
- Evaluation of Energy Conservation Measures for Wastewater Treatment Facilities (EPA 832-R-10-005, September 2010) · Source checked 2026-11-04
- Glossary of Acronyms & Technical Terms (EPA archive) · Source checked 2026-11-04
- National Primary Drinking Water Regulations · 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
- Safe Drinking Water Act (SDWA) · Source checked 2026-11-04
- Overview of Drinking Water Treatment Technologies · Source checked 2026-11-04
- 5.5 Turbidity (Monitoring & Assessment, EPA archive) · Source checked 2026-11-04
- 1910.147 - The control of hazardous energy (lockout/tagout) · Source checked 2026-11-04
- 1910.132 - General requirements (Personal Protective Equipment) · Source checked 2026-11-04
- 1910.134 - Respiratory protection · Source checked 2026-11-04
- 40 CFR 141.2 - Definitions (National Primary Drinking Water Regulations) · Source checked 2026-11-04
- About us · Source checked 2026-11-04
- Water quality facility operator certification · Source checked 2026-11-04
- CCWP Program · Source checked 2026-11-04
- Aluminum Sulfate Supply Chain – Full Profile · Source checked 2026-11-04
- Wastewater Technology Fact Sheet: Ozone Disinfection (EPA 832-F-99-063, September 1999) · Source checked 2026-11-04
- WaterSense at Work: Metering and Submetering (November 2023) · Source checked 2026-11-04
- Learn About Private Water Wells · Source checked 2026-11-04
About the CO Water Operator Exam
Colorado water and wastewater operator certification covering treatment processes, distribution and collection systems, laboratory procedures, safety, and Colorado-specific regulations under the CCWP program. Treatment classes D through A; distribution/collection grades 1 through 4.
Exam sponsor: Colorado Department of Public Health and Environment (CDPHE). The requirements and fees below concern the certification or admission exam, separate from our free practice resources.
Questions
100 questions
Time Limit
2.5-3 hours
Passing Score
70%
Fees, eligibility, and exam policies can change. Confirm them with the exam sponsor before applying or paying.
Frequently Asked Questions
Is the CO 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 CO Water Operator vocabulary game work?
Each round shows a clue for one of 20 CO 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 CO Water Operator terms come from?
OpenExamPrep researched each term from the Colorado Department of Public Health and Environment (CDPHE) content outline and primary sources, listed under Sources on this page. The game is independent study material, not an official exam resource.
What certification levels does Colorado have for water operators?
Colorado has Class D (entry) through A (highest) for treatment, and Grade 1 through 4 for distribution and collection systems. Class S covers small water systems serving fewer than 3,300 people, and Class T covers transient systems with wells serving fewer than 100 persons per day.
What score do I need to pass the Colorado water operator exam?
You need a score of 70% or higher on the WPI standardized exam. Each exam has 100 multiple-choice questions.