Free Practice Questions for NH Water/Wastewater Operator
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Sample NH Water/Wastewater Operator Practice Questions
Try these sample questions to review concepts for the NH Water/Wastewater Operator exam. Each question includes a detailed explanation. Start the interactive quiz above for the full 202+ question experience with AI tutoring.
1Which New Hampshire state agency oversees water works operator certification?
2How many certification grades does New Hampshire have for water works operators?
3What is the minimum passing score for a New Hampshire water operator certification exam?
4What are the requirements for New Hampshire's entry-level Grade 1A water operator certification?
5What are the requirements for New Hampshire Grade 1 Treatment and Distribution certification?
6How many levels of wastewater operator certification does New Hampshire have?
7When are New Hampshire in-person water works certification exams scheduled for 2026?
8Where are New Hampshire wastewater operator exams offered?
9What continuing education is required for New Hampshire Grade 1A operators?
10What computer-based testing options are available for NH water operator exams?
About the NH Water/Wastewater Operator Exam
The New Hampshire water and wastewater operator certification exam covers NHDES regulations, water works operations (Grade 1A through Grade 4), wastewater treatment (Grade I-IV), distribution systems, laboratory testing, and safety procedures.
Exam sponsor: New Hampshire Department of Environmental Services (NHDES). The requirements and fees below concern the certification or admission exam, separate from our free practice resources.
Questions
100 questions
Time Limit
2-3 hours
Passing Score
70%
Reported exam pass rate: ~65-75%. estimated first-time pass rate This describes exam candidates, not OpenExamPrep users or results from using our resources. Exam sponsor website
Fees, eligibility, and exam policies can change. Confirm them with the exam sponsor before applying or paying.
Our practice resources: topics covered
We aim to reflect publicly available exam outlines and topic information in our study resources. Coverage, format, and difficulty may differ from the actual exam, and we cannot guarantee that every detail is accurate or current. Confirm exam requirements, fees, and policies with the official exam sponsor.
New Hampshire State Laws & Regulations
NHDES certification grades, Grade 1A through Grade 4, wastewater Grades I-IV, and compliance
Water Treatment
Coagulation, flocculation, filtration, disinfection, and treatment for New England source waters
Wastewater Treatment
Activated sludge, sludge handling, biological treatment, nutrient removal, and process control
Distribution & Collection Systems
Pump operations, hydraulics, freeze protection, cross-connection control, and maintenance
Laboratory Testing & Math
Water quality testing, BOD, TSS, chlorine residual, calculations, and record-keeping
Preparing for the NH Water/Wastewater Operator Exam
What You Need to Know
- Passing score: 70%
- Exam length: 100 questions
- Time limit: 2-3 hours
- Exam / certification fees: Varies by grade Official sources
Using Our Practice Resources
- Work through all 202 available questions
- Review every answer and explanation
- Track weak areas and revisit them
- Use our AI tutor for tough concepts
Frequently Asked Questions
What certification levels does New Hampshire offer for water operators?
New Hampshire has five water works grades (1A, 1, 2, 3, 4) and four wastewater grades (I through IV).
What is the Grade 1A certification?
Grade 1A is the entry-level certification for small public water systems, requiring a high school diploma and the Small Public Water System Operator Course or 6 months experience.
When are 2026 exam dates?
In-person water works exams: April 21, July 21, October 29. Wastewater: first Wednesday of June and December. Computer-based exams available at multiple locations.