Studying for a Virginia water or wastewater operator exam? You're in the right place. Pick your discipline below: each tab has the certification levels, how Virginia names them, and the practice tests that match.
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Choose your certification
How Virginia classifies drinking-water operators
Virginia numbers its operator licenses backwards from most of the country.
Full breakdown in the FAQ below.
Choose your Virginia license
Waterworks Operator (Class 6 up to Class 1, where Class 1 is the highest)
Virginia Class 6, Waterworks Operator Practice Test
Class 6 is Virginia's entry waterworks license, covering systems serving fewer than 400 people that provide no treatment or only simple treatment: hypochlorination, corrosion control with calcite or magnesium oxide contactors, or sequestration by solution feed. Three months of experience with a high school diploma, six months without one. Only 4 CPE contact hours to renew, the lightest requirement in the state.
DPOR · Class 4 · smaller treated systemsVirginia Class 4, Waterworks Operator Practice Test
Class 4 is the first license covering real treatment. It applies to plants serving fewer than 5,000 people or under 0.5 MGD that run disinfection other than hypochlorination, caustic soda feed, iron and manganese removal, ion exchange, slow sand filtration, aeration, activated carbon contactors, membranes without chemical coagulation, or fluoridation with a saturator. Six months of experience with a diploma, a year without. 16 CPE hours to renew, and attendance is three days a week.
DPOR · Class 3Virginia Class 3, Waterworks Operator Practice Test
Class 3 covers small conventional filtration plants under 5,000 people or 0.5 MGD, and also larger plants running the lighter processes that would be Class 4 at a smaller size. A degree cuts the experience requirement to six months, a diploma makes it one year, and no diploma makes it 18 months. This is the first class where training credits can cover up to half of that experience.
DPOR · Class 2 · 5,000 to under 50,000Virginia Class 2, Waterworks Operator Practice Test
Class 2 covers plants serving 5,000 to just under 50,000 people or running 0.5 to just under 5.0 MGD with rapid rate conventional filtration or chemical coagulation with membranes, plus any high rate conventional filtration plant below the Class 1 thresholds. A degree gets you in on one year of experience at a Class 3 or higher facility, a diploma takes two years, and without a diploma you need a Class 3 license in hand plus three years.
DPOR · Class 1 (highest)Virginia Class 1, Waterworks Operator Practice Test
Class 1 is the top of the Virginia ladder: plants serving 50,000 or more people, or 5.0 MGD and above with conventional filtration or chemical coagulation combined with membrane filtration. You must already hold a Class 2 license, and then it takes 18 months of experience with a degree, three years with a diploma or four years without. Class 1 plants must have two operating staff on site whenever the plant is running.
Virginia wastewater practice tests
Virginia wastewater operators are licensed by DPOR in four classes, and the numbering runs backwards from most states: Class 1 is the highest and Class 4 is the entry level. Watch the numerals, because two different schemes are in play. Your operator license uses arabic numbers (Class 1 through Class 4) while the facility classification under DEQ's Sewage Collection and Treatment Regulations, 9VAC25-790, uses Roman numerals (Class I through Class IV). A Class 2 licensee may operate Class II, III and IV treatment works. You need a license at or above your facility's classification. Experience requirements depend on your education: a bachelor's, master's or associate's degree, a high school diploma, or neither, and each step down adds time. Training credits may substitute for up to half of the required experience at Classes 1, 2 and 3. Class 1 also has a prerequisite that catches people out: you must already hold a Class 2 license before you can sit for it, and without a high school diploma the same is true of Class 2, which requires a Class 3 license first. A year of full-time experience means at least 1,760 hours or 220 workdays in a 12-month period. Continuing professional education is 18 contact hours per cycle for Classes 1, 2 and 3 and 16 hours for Class 4, safety subjects may not exceed 25% of the total, and you cannot claim the same course twice in one cycle. Wastewater licenses expire on the last day of February in even-numbered years.
Virginia Class 4, Wastewater Works Practice Test
Class 4 is Virginia's entry wastewater works license and covers facilities DEQ or VDH classify as Class IV treatment works. Six months of experience at a Class 4 or higher facility with a high school diploma, a year without one, though training credits can cut that to six months. Renewal takes 16 CPE contact hours.
DPOR · Class 3Virginia Class 3, Wastewater Works Practice Test
Class 3 lets you operate Class III and Class IV treatment works. A degree gets you in on six months of experience, a diploma on one year, no diploma on 18 months, and training credits can halve those figures. This is the lowest wastewater class carrying the full 18 CPE contact hours per renewal cycle.
DPOR · Class 2Virginia Class 2, Wastewater Works Practice Test
Class 2 covers Class II, III and IV treatment works. A degree takes one year of experience at a Class 3 or higher facility, a diploma takes two years, and without a diploma you need a Class 3 license already in hand plus three years. 18 CPE contact hours to renew.
DPOR · Class 1 (highest)Virginia Class 1, Wastewater Works Practice Test
Class 1 is the highest Virginia wastewater license and covers every class of treatment works. You must already hold a Class 2 license. From there it is 18 months of experience with a degree, three years with a high school diploma, or four years without, all at a Class 2 or higher facility.
Virginia does not issue a separate water distribution license. DPOR issues exactly two categories, waterworks operator and wastewater works operator, and the waterworks license covers the whole system including the mains behind the plant. So if you are searching for a Virginia distribution certification, the answer is the Class 1 through Class 6 waterworks license sized to your facility. That said, distribution material is squarely on the waterworks exam and it counts for continuing professional education under 18VAC160-30-200, which lists distribution system operation and maintenance among the approved CPE subjects. Keep in mind that safety topics may not make up more than 25% of your CPE hours, so distribution and treatment content has to carry the bulk of it.
Distribution Fundamentals, Virginia Class 5/6 Support
Mains, valves, hydrants, storage and safety basics. Sized to the kind of small, lightly treated system a Virginia Class 5 or Class 6 operator runs.
DPOR · waterworks topicDistribution Operations, Virginia Class 4 Support
Main disinfection, flushing, cross-connection control and pressure management. The operating side of a Class 4 system, where an operator is on site three days a week.
DPOR · waterworks topicDistribution Hydraulics, Virginia Class 3/2 Support
Pumping, storage operation and distribution water quality, including disinfectant residual and byproduct management across a larger network.
DPOR · waterworks topicLarge System Distribution, Virginia Class 1 Support
System-wide planning, capital work and regulatory compliance for the 50,000-plus systems a Class 1 license covers.
Virginia has no standalone wastewater collection license either. The wastewater works operator license, Class 4 up to Class 1, is what the Commonwealth issues, and collection work at a municipality is not separately credentialed. Collection knowledge still shows up on the wastewater exams and it is an approved CPE subject under 18VAC160-30-210, so the material below is worth working through whether you are studying for an upgrade or filling the 18 CPE contact hours a Class 1, 2 or 3 license needs every two years.
Collection Systems I, Virginia Practice Test
Pipe, manholes, cleaning, safety and confined space awareness. Foundation material that appears on the Virginia wastewater works exams.
Collection · intermediateCollection Systems II, Virginia Practice Test
Lift station operation, inspection and televising, infiltration and inflow, and sanitary sewer overflow response.
Collection · advancedCollection Systems III, Virginia Practice Test
Force mains, pump station hydraulics and corrosion control, the kind of content that counts toward CPE for a Class 2 or Class 1 wastewater license.
Collection · highestCollection Systems IV, Virginia Practice Test
System-wide rehabilitation planning, capacity assessment and regulatory compliance.
About the Virginia operator exams
Operator certification in Virginia covers several disciplines, drinking water, wastewater, distribution, and collections, which may be handled by the same agency or by separate programs (drinking water is administered by DPOR, Board for Waterworks and Wastewater Works Operators and Onsite Sewage System Professionals issues operator licenses; VDH Office of Drinking Water classifies the waterworks and DEQ classifies the treatment works). The exact certification structure, exam format, levels, and continuing-education requirements vary by discipline and change over time, so always confirm the current scope and eligibility directly with the certifying agency. Our practice content focuses on the underlying technical material: the same operating principles, math, regulations, and process knowledge that show up on water and wastewater operator exams nationwide.
Frequently asked questions
How does Virginia classify water operators?
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Disclaimer: WaterOperatorPracticeTest.com is an independent study aid. We are not affiliated with DPOR, Board for Waterworks and Wastewater Works Operators and Onsite Sewage System Professionals issues operator licenses; VDH Office of Drinking Water classifies the waterworks and DEQ classifies the treatment works or any state primacy agency. Always confirm current exam requirements with your state's certification body.