Wastewater Operator Prep: Exam
Treatment Certification Test
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Walk into your wastewater operator certification exam ready. Wastewater Operator Prep gives you 1,027 practice questions with a clear explanation for every single answer, so you don't just memorize the right choice - you understand the treatment science behind it. Built for candidates preparing for ABC/state wastewater treatment operator certification exams.
WHY IT WORKS
Passing isn't about cramming. It's about repeated, targeted practice across every area the exam tests - then reinforcing exactly what you got wrong until it sticks.
- 1,027 questions written to match the real exams' style and difficulty
- An explanation on every answer, so each question teaches you something
- Full treatment-process coverage:
Preliminary & Primary Treatment - Activated Sludge - Secondary Clarification - Disinfection - Nutrient Removal - Solids Handling & Biosolids - Laboratory & Sampling - Collection Systems - Math & Dosage Calculations - Safety & Regulations
STUDY YOUR WAY
- Daily Plan that sizes itself to your exam date and keeps you on pace
- Quick 10 for a fast review between shifts
- Timed Mode to build exam-day speed and stamina
- Smart Review using spaced repetition to resurface weak spots
- Full-Length Mock Exam that simulates the real thing
- Missed Questions queue so nothing slips through
- Custom Quiz to drill any topic on demand
TRACK YOUR PROGRESS
- Pass probability that updates as you practice
- Accuracy broken down by topic
- Streaks to keep you consistent
- Exam countdown
WHO IT'S FOR
Wastewater treatment operators preparing for ABC or state certification exams at any grade level.
START TODAY
Your exam date isn't moving. Start a free trial, take your first Quick 10 today, and watch your pass probability climb.
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SUBSCRIPTION DETAILS
Full access is available through an auto-renewing subscription:
- Weekly: $5.99
- Monthly: $14.99
A free trial is available for new subscribers.
Payment will be charged to your Apple ID account at confirmation of purchase. Your subscription automatically renews unless auto-renew is turned off at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours prior to the end of the current period. You can manage and cancel your subscriptions by going to your App Store account settings after purchase. Any unused portion of a free trial period, if offered, will be forfeited when you purchase a subscription.
Terms of Use: https://hermesdigitalbr-spec.github.io/wastewater-legal/terms.html
Privacy Policy: https://hermesdigitalbr-spec.github.io/wastewater-legal/privacy.html
Terms of Use (EULA): https://www.apple.com/legal/itunes/appstore/dev/stdeula/
Ratings & Reviews
Housekeeping release: we cleaned up the App Store listing so the app is easier to find. The app itself is unchanged.
The developer, Hermes Inteligencia Digital Ltda, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Hermes Inteligencia Digital Ltda
- Size
- 3.3 MB
- Category
- Education
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Wastewater Prep Monthly $14.99
- Wastewater Prep Weekly $5.99
- Quarterly $29.99
- Copyright
- © 2026 Hermes Digital