Skip to main content
home

Licensing prep · Virginia waterworks operators

Virginia Waterworks Operator Prep (Class 4–1)

Nine units for the Virginia Waterworks Operator license, Classes 4 through 1 — slides, labs, checklists, troubleshooting scenarios, 3,500 explained questions and timed WPI-style exams.

Virginia Waterworks Operator Prep (Class 4–1) is an online, self-paced course from TRYeTECH Academy covering regulations, source water, coagulation, filtration, disinfection, corrosion control, lab analysis, equipment and safety. It has 9 modules and 61 lessons — about 135 hours of study — and every lesson combines narrated slides with Key details, pre-task checklists, troubleshooting scenarios, hands-on practice labs, worked examples, quizzes and flashcards, backed by a 3,500-question bank and timed WPI-style mock exams for Classes 4 through 1.

Start free lesson: Waterworks Operator, Module 1 Lesson 1Create account
  • 9 modules
  • 61 lessons
  • 3,500 questions
  • ≈135 hours
  • ≈13.5 CEUs*
  • Online, self-paced
Illustration of a cut-away rapid sand filter bed with media layers and underdrain

Who this course is for

Starting out

For operators-in-training and Class 4 candidates preparing for their first Virginia waterworks license. Every term is explained in plain language, each lesson opens with a pre-task checklist and the scenarios build safe troubleshooting habits from day one.

Experienced & licensed

For licensed operators moving up to Class 3, 2 or 1 and operators earning renewal continuing-education hours. You get code and standard references, numbers you can use in the field, pro-level scenarios and tracked active hours for CEU/continuing-education records.

What’s included

Practice labs in this course

Course sequence: Waterworks Operator

3 numbered courses, 135 hours in total. Take them in order — each one prepares you for the next. Download the two-page sheet for any course.

  1. Regulations, Source Water & Clarification

    Foundation · 45 hours · 3 modules · 20 lessons · 9 3D simulators

    Virginia licensing and the regulatory framework, source water and wells, and the coagulation–flocculation–sedimentation steps that start every surface-water plant.

    • Describe Virginia operator licensing, experience and renewal requirements and the roles of DPOR and VDH.
    • Explain the Safe Drinking Water Act, MCLs, monitoring and reporting at a working level.
    • Characterize source waters (surface, groundwater, reservoirs) and describe source-water protection and wellhead protection.

    Download the DW 101 course sheet (PDF)

  2. Filtration, Disinfection & Specialty Treatment

    Intermediate · 45 hours · 3 modules · 20 lessons · 9 3D simulators

    Filter operation and backwash, chlorine disinfection with CT and byproduct control, and corrosion control, fluoridation, iron/manganese, softening, taste and odor, membranes and adsorption.

    • Operate and optimize rapid gravity filters: head loss, run length, backwash rate and bed expansion.
    • Interpret turbidity performance requirements and filtration log credits.
    • Explain chlorine chemistry, breakpoint, residuals and chloramines; calculate CT and inactivation ratios.

    Download the DW 102 course sheet (PDF)

  3. Laboratory, Operations & Safety

    Advanced · 45 hours · 3 modules · 21 lessons · 9 3D simulators

    Sampling and lab analysis, pumps and hydraulics, equipment O&M, and the safety, security and emergency-response skills that protect people and the public.

    • Collect, preserve and analyze compliance samples with correct bottles, preservatives and holding times.
    • Run QA/QC, interpret results and prepare monthly operating reports.
    • Calculate lead and copper 90th percentile and understand action-level logic (verify current rules).

    Download the DW 103 course sheet (PDF)

Course outline

9 modules · 61 lessons · about 15 hours per module. Lesson 1 of every module is free with an account.

  1. Module 1: Virginia Licensing, Regulations & Utility Management

    Module 1 · 7 lessons · ≈15 h

    How Virginia licenses waterworks operators (DPOR, 18VAC160-30) and regulates waterworks (VDH-ODW, 12VAC5-590), the federal Safe Drinking Water Act rules Virginia enforces, and the utility management skills tested on the Class 1 and 2 exams. Includes experience, CPE and compliance math.

    You will be able to:

    • Distinguish the roles of EPA, VDH-ODW and DPOR and cite 40 CFR 141, 12VAC5-590 and 18VAC160-30.
    • Determine experience, education and substitution eligibility for each Virginia license class.
    • Apply application, exam, renewal, CPE and reinstatement rules, including deadlines and hour requirements.
    • Match waterworks classes to required license classes and minimum operator attendance.

    Lessons

    1. Who regulates Virginia waterworks: SDWA, VDH & DPOR Free sample
    2. Earning and keeping your operator license
    3. Plant classification, attendance, MORs and records
    4. Microbial rules: RTCR, Ground Water Rule & SWTR family
    5. Disinfection byproducts and lead & copper
    6. Public notification, CCR and cross-connection control
    7. Utility management and unit review

  2. Module 2: Source Water Characteristics, Wells & Source Protection

    Module 2 · 6 lessons · ≈15 h

    This unit covers where drinking water comes from and why its quality changes: the hydrologic cycle, aquifers and Virginia hydrogeology, well construction and hydraulics, reservoir stratification and turnover, algae and cyanotoxins, raw water quality and pathogens, LT2 source bins, intakes, drought, chemical contaminants, and VDH source water protection. It also drills the source water math that appears on WPI Water…

    You will be able to:

    • Describe the hydrologic cycle and contrast surface water, groundwater, and GUDI characteristics.
    • Distinguish unconfined, confined, artesian, and perched aquifers and relate them to contamination risk.
    • Relate Virginia's physiographic provinces (karst, Piedmont, Coastal Plain/Potomac aquifer) to source water problems.
    • Identify well construction components and Virginia Waterworks Regulation requirements for wells.

    Lessons

    1. Where drinking water comes from: sources, aquifers & GUDI Free with account
    2. Wells: construction, hydraulics, disinfection & rehab
    3. Reservoirs: stratification, turnover, algae & taste/odor
    4. Raw water quality, pathogens & LT2 source bins
    5. Intakes, drought & chemical contaminants
    6. Source water protection & unit math review

  3. Module 3: Coagulation, Flocculation & Sedimentation

    Module 3 · 7 lessons · ≈15 h

    Coagulation destabilizes the negatively charged colloids that cause turbidity and color, flocculation grows them into settleable floc, and sedimentation or flotation removes most of that floc before filtration. This unit covers coagulant chemistry, alkalinity and pH control, enhanced coagulation for TOC removal under the Stage 1 DBPR, mixing intensity, jar testing, clarifier types and loading rates, residuals…

    You will be able to:

    • Explain why colloids remain suspended and how zeta potential relates to coagulation.
    • Distinguish charge neutralization, sweep floc and bridging, and recognize restabilization from overdose.
    • Compare alum, ferric salts, PACl, ACH and polymers, including alkalinity demand and pH range.
    • Calculate coagulant, lime and polymer feed rates from jar-test results in lb/day, gal/day and mL/min.

    Lessons

    1. Why we coagulate: particles, charge & the treatment train Free with account
    2. Coagulants, polymers & alkalinity control
    3. Rapid mix, flocculation & jar testing
    4. Enhanced coagulation & TOC removal (Stage 1 DBPR)
    5. Sedimentation basins & loading-rate math
    6. High-rate clarification & residuals handling
    7. Troubleshooting coagulation, flocculation & sedimentation

  4. Module 4: Filtration

    Module 4 · 7 lessons · ≈15 h

    Filtration is the final particle and pathogen barrier in surface water treatment. This unit covers how granular, slow sand, DE, pressure, cartridge, and membrane filters work; how to operate, backwash, and troubleshoot rapid filters; the IESWTR/LT1 turbidity and individual-filter requirements adopted in Virginia's Waterworks Regulations (12VAC5-590); log removal credits; turbidimeter use; and the filter math tested…

    You will be able to:

    • Explain straining, sedimentation, adsorption, and biological removal mechanisms in filters.
    • Compare rapid sand, dual media, multimedia, GAC-capped, slow sand, DE, pressure, cartridge/bag, and membrane filters.
    • Determine effective size and uniformity coefficient and explain why media density matters.
    • Distinguish conventional, direct, and in-line filtration and their regulatory credits.

    Lessons

    1. How filters work: mechanisms, media, and rapid filters Free with account
    2. Treatment trains and other filter technologies
    3. Filter structure, flow control, head loss and runs
    4. Backwashing and filter troubleshooting
    5. Turbidity rules, IFE/CFE monitoring and turbidimeters
    6. Log credits, LT2 and filter optimization
    7. Filter math for the WPI exam

  5. Module 5: Disinfection & Disinfection Byproducts

    Module 5 · 6 lessons · ≈15 h

    Covers chlorine chemistry, breakpoint chlorination, chlorine forms and feed equipment, chloramines, alternative disinfectants (ClO2, ozone, UV), and the CT approach to primary disinfection. Also covers the residual and DBP rules Virginia operators must meet under 12VAC5-590 and 40 CFR 141, disinfection of mains, tanks and wells, and the operator math used every shift.

    You will be able to:

    • Explain HOCl/OCl⁻ chemistry and how pH and temperature affect disinfection.
    • Interpret the breakpoint curve and distinguish free, combined and total residual.
    • Compare chlorine gas, sodium and calcium hypochlorite and on-site generation, including handling hazards and hypochlorite degradation.
    • Describe gas chlorinator components, container handling, withdrawal limits and leak response.

    Lessons

    1. Disinfection basics: chlorine chemistry and breakpoint Free with account
    2. Chlorine forms and gas chlorination systems
    3. Hypochlorite feed systems and chloramination
    4. CT, contact time and residual compliance
    5. Alternative disinfectants, DBPs and DBP control
    6. Disinfecting mains, tanks and wells; disinfection math

  6. Module 6: Corrosion Control, Fluoridation, Iron/Manganese, Softening, Taste & Odor, Membranes & Adsorption

    Module 6 · 7 lessons · ≈15 h

    This unit covers the specialty treatment processes that make water stable, palatable and safe beyond basic clarification and disinfection: corrosion and lead/copper control, fluoridation, iron and manganese removal, lime and ion exchange softening, taste and odor control, aeration, membranes and activated carbon. It also covers removal options for arsenic, nitrate and PFAS, the secondary MCLs, and the chemical-feed…

    You will be able to:

    • Describe the parts of an electrochemical corrosion cell and explain galvanic corrosion using the galvanic series.
    • Interpret the Langelier Saturation Index and choose chemicals to adjust calcium carbonate stability.
    • Compare corrosion control treatments (pH/alkalinity adjustment, orthophosphate, polyphosphate, silicates) and identify lead and copper sources and Lead and Copper Rule action levels.
    • Calculate fluoride feed rates for sodium fluoride, sodium fluorosilicate and fluorosilicic acid, including natural fluoride, purity and available fluoride ion.

    Lessons

    1. Corrosion and Water Stability: The Cell and the LSI Free with account
    2. Lead and Copper Control and Corrosion Control Treatment
    3. Fluoridation: Chemicals, Feed Math and Safety
    4. Iron, Manganese, Aeration and Air Stripping
    5. Hardness and Softening: Lime-Soda Ash and Ion Exchange
    6. Taste and Odor Control and Activated Carbon
    7. Membranes, Arsenic, Nitrate, PFAS and Secondary MCLs

  7. Module 7: Laboratory Analysis & Water Quality Monitoring

    Module 7 · 7 lessons · ≈15 h

    This unit covers how to collect representative, properly preserved samples and how the core waterworks lab tests work, from chlorine residual, pH and turbidity to alkalinity and hardness titrations, jar tests, fluoride, organics, and coliform methods. It also covers RTCR and lead/copper sampling, QA/QC, lab safety and glassware, MOR records, and the statistics and lab math that appear on the WPI exam.

    You will be able to:

    • Choose grab or composite sampling and collect representative samples from proper taps.
    • Apply correct containers, preservatives, holding times and chain-of-custody procedures.
    • Carry out RTCR routine and repeat sampling and recognize assessment triggers and E. coli MCL violations.
    • Collect lead and copper first-draw samples and calculate the 90th percentile.

    Lessons

    1. Sampling right: taps, bottles, holding times & custody Free with account
    2. Compliance sampling: RTCR and lead & copper
    3. Field tests: chlorine residual, pH, temperature & turbidity
    4. Titrations & jar testing
    5. Inorganic, organic & microbiological methods
    6. Lab safety, glassware, solutions & QA/QC
    7. Records, the MOR & operator statistics

  8. Module 8: Equipment Operation & Maintenance, Pumps & Hydraulics

    Module 8 · 7 lessons · ≈15 h

    This unit covers the hydraulics, pumping, electrical, mechanical, and instrumentation knowledge behind the WPI Equipment Operation & Maintenance domain. You will learn how pressure, head, and flow behave in plant and distribution piping; how centrifugal and positive displacement pumps, motors, valves, meters, and SCADA systems work and fail; and how to perform the horsepower, energy cost, drawdown, affinity law, and…

    You will be able to:

    • Convert between pressure and head and calculate static head, friction head, and total dynamic head.
    • Apply the continuity equation (Q = AV) to calculate flow, velocity, and pipe or tank volumes.
    • Explain the causes, effects, and prevention of water hammer and cavitation, and the NPSH available vs. required relationship.
    • Identify centrifugal and positive displacement pump components and describe packing, mechanical seal, and priming practices.

    Lessons

    1. Hydraulics basics: pressure, head, flow and velocity Free with account
    2. Centrifugal pumps, cavitation and water hammer
    3. Pump curves, affinity laws and horsepower math
    4. Positive displacement pumps and chemical feed
    5. Electric motors, VFDs and electrical safety
    6. Maintenance, CMMS and support equipment
    7. Valves, flow meters, instruments and SCADA

  9. Module 9: Safety, Security & Emergency Response

    Module 9 · 7 lessons · ≈15 h

    Covers the safety, security and emergency response knowledge Virginia waterworks operators need under VOSH and federal rules: confined spaces, lockout/tagout, hazard communication, chlorine and other chemical hazards, PPE, trenching, electrical and work zone safety, AWIA risk and resilience planning, cybersecurity, ICS and boil water response. It closes with injury recordkeeping and the safety math that appears on…

    You will be able to:

    • Explain how VOSH administers OSHA standards in Virginia, including coverage of public employees.
    • Apply 29 CFR 1910.146 permit-required confined space rules: permits, roles, testing order, acceptable atmospheres and rescue.
    • Perform lockout/tagout steps and interpret SDS sections, GHS labels and pictograms.
    • Describe chlorine properties, container handling, leak detection and emergency response, and hazards of ammonia, ozone, acids, caustic and fluoride chemicals.

    Lessons

    1. Safety foundations: VOSH, controls, LOTO & HazCom Free with account
    2. Confined space entry, testing & ventilation
    3. Chlorine & treatment chemical safety
    4. PPE, respirators, electrical, fire & falls
    5. Trenching, Virginia 811 & work zones
    6. Security, AWIA, cybersecurity & tampering
    7. Emergency response, ICS, records & safety math

Editions & standards

Prepared with AI assistance. Training only — verify against current DPOR, VDH/DEQ and EPA requirements, your permit, your plant’s SOPs and the manufacturer’s instructions.

Exam prep for Classes 4 through 1

Timed mock exams mirror the structure of the WPI exams Virginia uses: 100 questions in 240 minutes, weighted by content domain for the license class you choose, with a review screen and score history.

Virginia license class and matching WPI exam
Virginia licenseWPI exam
Class 4WPI Water Treatment Class I
Class 3WPI Water Treatment Class II
Class 2WPI Water Treatment Class III
Class 1WPI Water Treatment Class IV

Exam content domains

Sample key points from the course

Fluoride: feed = dose ÷ (AFI × purity)
Subtract natural fluoride first; NaF AFI 0.452, Na₂SiF₆ 0.607, H₂SiF₆ 0.792.
Filtration rate is gpm ÷ ft²
Typical rapid sand 2–4 gpm/ft²; backwash 15–20 gpm/ft². Rise rate in/min = gpm/ft² × 1.6.
CT = C × T10
T10 = theoretical detention × baffling factor, at PEAK hourly flow and LOW water level.
Dose = demand + residual
Chlorine feed lb/day comes from the DOSE, never just the residual.
Hardness: 17.1 mg/L = 1 grain/gal
Carbonate hardness can never exceed total alkalinity.

Access & pricing

Purchases are completed securely in the Academy portal after you sign in; the price shown at checkout applies. Team and utility seats: support@tryetech.com.

Frequently asked questions

Who is the Waterworks Operator course for?

It is written for two groups at once: operators-in-training and Class 4 candidates preparing for their first Virginia waterworks license get plain-language explanations of every term, and licensed operators moving up to Class 3, 2 or 1 and operators earning renewal continuing-education hours get code and standard references, field tips and harder scenarios. No prerequisites are required.

Does it prepare me for the Virginia operator exam?

Yes. The 9 modules follow the WPI Water Treatment content domains used for Virginia licenses, Classes 4 through 1. A 3,500-question bank ramps from easy to exam-style, and timed mock exams (100 questions, 240 minutes) are weighted to each class. Passing a practice exam does not guarantee a passing score on the real exam.

Can I try it for free?

Yes. Lesson 1 of Module 1 opens without an account. A free account unlocks Lesson 1 of every module, one complete trial module and the operator tools (Math Lab, SDS library, calculators). Full access unlocks every lesson, lab, flashcard deck and certificate.

How many hours is the course, and does it count for CEUs?

Plan on about 135 hours (≈15 hours per module across 9 modules and 61 lessons), roughly 13.5 CEUs at 10 contact hours per CEU. The Academy records your active study time and issues module certificates with contact hours; whether they count is up to your licensing board or employer.

Which code and standard editions does it follow?

The course is written to: WPI Water Treatment (Class I–IV) · DPOR 18VAC160-30 · VDH Waterworks Regulations 12VAC5-590 · 40 CFR 141. Each lesson cites the edition it uses. Always verify against the editions your authority having jurisdiction or regulator enforces.

Does it work on a phone or tablet in the plant?

Yes. The course runs in any modern browser on a phone, tablet or desktop, follows your light or dark setting, is fully keyboard accessible and keeps your place between devices when you are signed in.

Do I get a certificate?

You earn a module certificate when all lessons in a module are complete and the module quizzes average 80% or better. Each certificate lists your active study hours and a verification code anyone can check on the Academy site.

How do I buy full access or seats for my team?

Create a free account, then choose full access in the Academy portal. Utilities and contractors can contact support@tryetech.com for organization seats and verified email-domain access.

Start with a free lesson

See how the course works before you create an account — Module 1, Lesson 1 opens right away.

Start free lesson: Waterworks OperatorCreate account

* CEU estimate at 10 contact hours per CEU; credit is subject to approval by your licensing board or employer.