FE Environmental: Practice Questions, Units, and Exam Format
Water resources, water and wastewater treatment, air quality, solid and hazardous waste, and environmental health. See exactly what is on the exam, unit by unit, and practise it with a tutor that adapts to you.
Exam format
| Section | Questions | Time | Share of score |
|---|---|---|---|
| FE Environmental | 110 | 5 hr 20 min | 100% |
Units and exam weights
| Unit | Exam weight | Topics covered |
|---|---|---|
| Mathematics | 4.55 to 7.27% | 1.A Analytic geometry and trigonometry, 1.B Algebraic equations and roots, 1.C Calculus (e.g., differential, integral, differential equations), 1.D Numerical methods (e.g., numerical integration, approximations, precision limits, error propagation) |
| Probability and Statistics | 3.64 to 5.45% | 2.A Measures of central tendencies and dispersions (e.g., mean, mode, standard deviation), 2.B Probability distributions (e.g., discrete, continuous, normal, binomial), 2.C Estimation for a single mean (e.g., point, confidence intervals), 2.D Regression (linear, multiple), curve fitting, and goodness of fit (e.g., correlation coefficient, least squares), 2.E Hypothesis testing (e.g., t-test, outlier testing, analysis of the variance) |
| Ethics and Professional Practice | 4.55 to 7.27% | 3.A Codes of ethics (e.g., professional and technical societies, ethical and legal considerations), 3.B Public health, safety, and welfare (e.g., public protection issues, licensing boards, professional liability), 3.C Compliance with codes, standards, and regulations (e.g., CWA, CAA, RCRA, CERCLA, SDWA, NEPA, OSHA), 3.D Engineer’s role in society (e.g., sustainability, resiliency, long-term viability) |
| Engineering Economics | 4.55 to 7.27% | 4.A Time value of money (e.g., equivalence, present worth, equivalent annual worth, future worth, rate of return, annuities), 4.B Cost types and breakdowns (e.g., fixed, variable, direct and indirect labor, incremental, average, sunk, O&M), 4.C Economic analyses (e.g., benefit-cost, break-even, minimum cost, overhead, life cycle), 4.D Project selection (e.g., comparison of projects with unequal lives, lease/buy/make, depreciation, discounted cash flow) |
| Fundamental Principles | 6.36 to 10% | 5.A Population projections and demand calculations (e.g., water, wastewater, solid waste, energy), 5.B Reactors, 5.C Materials science (e.g., properties, corrosion, compatibility, stress strain) |
| Environmental Chemistry | 6.36 to 10% | 6.A Stoichiometry and chemical reactions (e.g., equilibrium, acid-base, oxidation-reduction, precipitation, pC-pH), 6.B Kinetics (e.g., chemical conversion, growth and decay), 6.C Organic chemistry (e.g., nomenclature, functional group reactions), 6.D Multimedia equilibrium partitioning (e.g., Henry’s law, octanol partitioning coefficient) |
| Health Hazards and Risk Assessment | 3.64 to 5.45% | 7.A Dose-response toxicity (e.g., carcinogen, noncarcinogen), 7.B Exposure routes and pathways, 7.C Occupational health (e.g., PPE, noise pollution, safety screening) |
| Fluid Mechanics and Hydraulics | 10.91 to 16.36% | 8.A Fluid statics (e.g., pressure, force analysis), 8.B Closed conduits (e.g., Darcy-Weisbach, Hazen-Williams, Moody), 8.C Open channel (e.g., Manning, supercritical/subcritical, culverts, hydraulic elements), 8.D Pumps (e.g., power, operating point, parallel, series), 8.E Flow measurement (e.g., weirs, orifices, flumes), 8.F Blowers (e.g., power, inlet/outlet pressure, efficiency, operating point, parallel, series) |
| Thermodynamics | 2.73 to 4.55% | 9.A Thermodynamic laws (e.g., first law, second law), 9.B Energy, heat, and work (e.g., efficiencies, coefficient of performance, energy cycles, energy conversion, conduction, convection, radiation), 9.C Behavior of ideal gases |
| Surface Water Resources and Hydrology | 8.18 to 12.73% | 10.A Runoff calculations (e.g., land use, land cover, time of concentration, duration, intensity, frequency, runoff control, runoff management), 10.B Water storage sizing (e.g., reservoir, detention and retention basins), 10.C Routing (e.g., channel, reservoir), 10.D Water quality and modeling (e.g., erosion, channel stability, stormwater quality management, wetlands, Streeter-Phelps, eutrophication), 10.E Water budget (e.g., evapotranspiration, precipitation, infiltration, soil moisture, storage) |
| Groundwater, Soils, and Sediments | 7.27 to 10.91% | 11.A Basic hydrogeology (e.g., aquifer properties, soil characteristics, subsurface), 11.B Groundwater flow (e.g., Darcy’s law, specific capacity, velocity, gradient, transport mechanisms), 11.C Drawdown (e.g., Dupuit, Jacob, Theis, Thiem), 11.D Remediation of soil, sediment, and/or groundwater (e.g., recovery, ex-situ/in-situ treatment) |
| Water and Wastewater | 10.91 to 16.36% | 12.A Water and wastewater characteristics (e.g., physical, chemical, biological, nutrients), 12.B Mass balance and loading rates (e.g., removal efficiencies), 12.C Physical processes (e.g., sedimentation/clarification, filtration, adsorption, membrane, flocculation, headworks, flow equalization, air stripping, activated carbon), 12.D Chemical processes (e.g., disinfection, ion exchange, softening, coagulation, precipitation), 12.E Biological processes (e.g., activated sludge, fixed film, lagoons, phytoremediation, aerobic, anaerobic, anoxic), 12.F Sludge treatment and handling (e.g., land application, digestion, sludge dewatering, composting) |
| Air Quality and Control | 7.27 to 10.91% | 13.A Ambient and indoor air quality (e.g., criteria, toxic and hazardous air pollutants), 13.B Mass and energy balances (e.g., STP basis, loading rates, heating values), 13.C Emissions (e.g., factors, rates), 13.D Atmospheric modeling and meteorology (e.g., stability classes, dispersion modeling, lapse rates), 13.E Gas treatment technologies (e.g., biofiltration, scrubbers, adsorbers, incineration, catalytic reducers), 13.F Particle treatment technologies (e.g., baghouses, cyclones, electrostatic precipitators) |
| Solid and Hazardous Waste | 6.36 to 10% | 14.A Mass and energy balances, 14.B Solid waste management (e.g., collection, transportation, storage, composting, recycling, waste to energy), 14.C Solid waste disposal (e.g., landfills, leachate and gas collection), 14.D Hazardous waste compatibility, 14.E Site characterization (e.g., sampling, monitoring, remedial investigation), 14.F Hazardous and radioactive waste treatment and disposal (e.g., physical, chemical, thermal, biological) |
| Energy and Environment | 3.64 to 5.45% | 15.A Energy sources concepts (e.g., conventional and alternative), 15.B Environmental impact of energy sources and production (e.g., greenhouse gas production, carbon footprint, thermal, water needs) |
How Kalyta teaches FE Environmental
Practice that adapts to you, an explanation for every answer, and a full rehearsal before the real thing. You spend your time on the units that move your score instead of the ones you have already got.
- Adaptive practice. Questions are picked around your current level, so you are always working just past what you can already do.
- Every answer explained. See why the right answer is right and why each other choice is wrong, with figures and step by step reasoning.
- An AI tutor you can steer. Ask why something works, ask for another example, or tell it to slow down and teach the idea from the start.
- Full exam rehearsals. Sit the real format under real timing and get a predicted score, so test day feels like something you have already done.
- Progress you can see. Watch your readiness climb unit by unit, and know what is solid before you walk in.
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