Water Treatment Exam Prep 2026

VoltExam

In-app purchases

About this app

Water Treatment Exam Prep 2026 helps operators study for water treatment certification exams with focused practice, treatment process review, calculator-style tools, flashcards, and mock exams.

WHAT IS NEW

- Improved premium study flow
- Better Pro unlock and restore purchase behavior
- Stronger free trial messaging
- Readiness score, bookmarks, flashcards, and weak-area review
- Performance optimized release build

FREE FEATURES

- Daily free practice questions
- Study guide previews
- Treatment process overview
- Basic progress tracking

PRO FEATURES

- Unlimited access to all 480 water treatment practice questions
- Timed mock exam practice
- Operator tools for treatment, disinfection, flow, and lab review
- Flashcards and bookmarks
- Readiness score and missed-question review

PRICING

US pricing: Monthly Pro is $7.99/month with a 3-day free trial for eligible Google Play accounts. Annual Pro is $21.99/year. Lifetime Pro is $39.99 one-time. Final price is shown in Google Play before purchase and may be localized by country.

INDEPENDENT APP DISCLAIMER

Independent exam prep app. This app does not represent a government entity and is not affiliated with the U.S. Environmental Protection Agency, any state water operator certification board, ABC, or AWWA. It does not provide official certification, licensing, legal, safety, or compliance advice.

OFFICIAL SOURCES AND REFERENCES

Water operator certification rules vary by state. Always verify requirements with your official state drinking water/operator certification program.

U.S. EPA - Drinking Water Regulations:
https://www.epa.gov/dwreginfo/drinking-water-regulations

U.S. EPA - Operator Certification Program:
https://www.epa.gov/dwreginfo/operator-certification-program

eCFR - 40 CFR Part 141 National Primary Drinking Water Regulations:
https://www.ecfr.gov/current/title-40/chapter-I/subchapter-D/part-141

USA.gov - State government websites:
https://www.usa.gov/state-governments

Privacy Policy: https://www.voltexam.com/privacy
Terms of Service: https://www.voltexam.com/terms

What’s new

Premium study update: improved billing and restore flow, stronger 3-day free trial messaging, readiness score, operator tools, flashcards, mock exam support, bookmarks, weak-area review, and Android performance optimizations.