Sewer Cleaning and Inspection Questions
Equipment Operation, Evaluation and Maintenance is 27 questions on WPI’s Wastewater Collection Class I exam. Practice the equipment collection crews use.
100 questions in the official content counts, with a score for every area and an explanation for every option.
Or try the free cleaning and inspection drill- 22 original cleaning and inspection questions, every option explained
- Tested on 5 of our 25 practice exams
What is the purpose of a sewer jetter's rear-facing nozzle jets?
What our cleaning and inspection questions cover
- Jet-vac trucks, nozzle direction and pressure near laterals
- Rodders, root cutters, balling and plugs
- CCTV inspection and defect coding
- Smoke and dye testing, flow meters
- Gas detectors, ventilation blowers and equipment care
This list is our own summary, written for practice. The exam owners publish their outlines: California’s Expected Range of Knowledge, TCEQ’s Need-to-Know Criteria and WPI’s Need-to-Know Criteria.
Drill cleaning and inspection, then sit a full practice exam
100 questions in the official content counts, with a score for every area and an explanation for every option.
Or try the free cleaning and inspection drillIdeas the questions test most
- Jet upstream, then wash debris back to the manhole.
- Clean before CCTV.
- Smoke finds openings that let stormwater in.
- Bump test gas detectors daily.
Start the free cleaning and inspection drill · Wastewater Collection Class I practice test · TCEQ Class D Wastewater practice test · TCEQ Class C Wastewater practice test · TCEQ Collection Class I practice test · Wastewater Collection Class II practice test
Common questions
Which way does a jetter nozzle travel?
Usually upstream against the flow, then it is pulled back so the rear jets wash debris down to the manhole where it is vacuumed out.
What does smoke testing find?
Openings where surface water can enter the sewer, such as broken cleanouts, connected roof drains and defective manholes.
100 questions in the official content counts, with a score for every area and an explanation for every option.
Or try the free cleaning and inspection drillMore operator topics
Outlines used for these questions: Expected Range of Knowledge, Drinking Water Treatment Exam (rev. 4/2020, PDF) · Expected Range of Knowledge, Drinking Water Distribution Exam (rev. 4/2020, PDF) · TCEQ: Need-to-Know Criteria for public water system operators · TCEQ: What applicants for wastewater licenses need to know · WPI: 2025 Need-to-Know Criteria.
Game Assessment Prep is an independent practice site, not affiliated with or endorsed by Water Professionals International (WPI, formerly ABC), the California State Water Resources Control Board or the Texas Commission on Environmental Quality. Every question is original; none is taken from a certification exam, an official study guide or another prep provider.