An environmental science degree requires approximately 120 credit hours, with an interdisciplinary core spanning biology, chemistry, geology/earth science, physics, statistics, and GIS (Geographic Information Systems). Most programs include significant fieldwork, a capstone research project, and courses in environmental policy and economics. The math requirements typically include calculus and statistics. The program is less math-intensive than engineering but requires more lab and field hours than most social sciences.
The real concern behind this search is whether environmental science leads to paying jobs or just idealism. You want to work on environmental issues, but you also need to pay rent. That tension is real, and environmental science programs do not always address it honestly.
The practical answer: environmental science graduates work in consulting firms, government agencies (EPA, state DEQs, USGS), nonprofit organizations, and increasingly in corporate sustainability departments. The career paths exist, but they tend to start at modest salaries and require either specific technical skills (GIS, water quality testing, environmental compliance) or graduate education to reach higher-paying positions.
The National Center for Education Statistics tracks environmental science as a growing degree category1. The field benefits from expanding regulatory requirements, corporate sustainability mandates, and public concern about climate change — all of which create jobs for people who understand both the science and the policy.
For the career and salary picture, see the environmental science degree overview. This page covers exactly what the program requires.
GIS (Geographic Information Systems) is the single most marketable skill you can build in an environmental science program. Environmental consultants, government agencies, and land management organizations all need GIS proficiency, and many environmental science programs only require one introductory GIS course. Take every GIS course available and become genuinely proficient — not just familiar — with ArcGIS or QGIS. It turns a broad degree into a specific, hireable credential.
Core Coursework: What Every Environmental Science Major Takes
Environmental science is inherently interdisciplinary, drawing from biology, chemistry, earth science, and social science. The course requirements reflect this breadth.
Science foundation (first two years):
- General Biology I and II (with labs) — ecology, evolution, cell biology, and organismal diversity.
- General Chemistry I and II (with labs) — atomic structure, bonding, reactions, and equilibrium. Some programs also require organic chemistry.
- Earth Science/Geology (with lab) — rocks, minerals, plate tectonics, and earth systems. The geological perspective on environmental processes.
- Physics I (with lab) — mechanics and energy. Some programs accept algebra-based rather than calculus-based physics.
- Calculus I (sometimes Calculus II) — mathematical foundation for quantitative analysis.
- Statistics — descriptive and inferential statistics applied to environmental data. Essential for research methods and data analysis.
Environmental science core (sophomore through senior years):
- Introduction to Environmental Science — survey of environmental issues: air quality, water resources, biodiversity, climate change, energy, and pollution.
- Ecology — population dynamics, community ecology, and ecosystem science. Usually includes a field component.
- Environmental Chemistry — fate and transport of chemicals in air, water, and soil. How pollutants move through environmental systems.
- GIS and Remote Sensing — spatial analysis, mapping, and satellite imagery interpretation. Increasingly digital and data-intensive.
- Environmental Policy and Law — regulatory frameworks (Clean Air Act, Clean Water Act, NEPA, CERCLA), environmental impact assessment, and policy analysis.
- Soil Science or Hydrology — physical and chemical properties of soils or water systems. Foundational for understanding contamination and remediation.
- Senior Capstone or Research Project — independent or team-based research addressing a real environmental question.
BA vs BS: Which Track Is Right for You?
BS in Environmental Science — the standard track for career-oriented students. More science and math coursework (full chemistry sequence, calculus, possibly organic chemistry). Better preparation for technical consulting positions and graduate school in environmental science or related STEM fields.
BA in Environmental Science/Studies — broader, with more room for social science, policy, and humanities coursework. Good for students heading toward environmental policy, advocacy, education, or law school. The "studies" version is typically less science-intensive than the "science" version.
For consulting, government regulatory positions, and graduate school in the sciences, the BS is the expected credential. For policy, advocacy, and environmental law, either works.
Common Concentrations and Specializations
Water resources/hydrology — freshwater systems, water quality, watershed management, and stormwater. Strong demand in consulting and government.
Conservation biology — wildlife management, habitat restoration, and biodiversity protection. Often leads to careers with state fish and wildlife agencies or conservation nonprofits.
Environmental chemistry/toxicology — how chemicals interact with environmental and biological systems. Connects to careers in contamination assessment and remediation.
Climate science — atmospheric science, climate modeling, and carbon cycle analysis. Primarily an academic and research path at the bachelor's level.
Sustainability — corporate sustainability, green building, and sustainable development. Growing corporate demand as companies face ESG reporting requirements.
Environmental policy — regulatory analysis, environmental impact assessment, and advocacy. Bridges science and social science.
"Environmental science" and "environmental studies" are different degrees at many institutions. Environmental science emphasizes natural science coursework (biology, chemistry, earth science). Environmental studies emphasizes social science, policy, and humanities approaches to environmental issues. If you want technical consulting or laboratory work, make sure you are in the science track. If you want policy and advocacy, either works. Check your program's specific requirements.
Prerequisites and Admission Requirements
Environmental science programs typically do not have separate competitive admission. You declare the major and begin the science sequence.
Critical starting point: Your chemistry and math placement determines your timeline. If you enter college ready for General Chemistry I and Calculus I simultaneously, you are on track. If you need prep courses in either area, plan for an extra semester.
Field course requirements — many programs require summer field courses or field camp experiences that involve travel and additional fees. These are invaluable for career preparation and networking but add cost beyond standard tuition.
Skills You'll Build (and What Employers Actually Value)
GIS and spatial analysis — mapping, data visualization, and spatial problem-solving using GIS software. The most directly hireable technical skill in the program.
Field sampling and laboratory analysis — water quality testing, soil sampling, biological surveys, and environmental monitoring. Practical skills for consulting and regulatory work.
Data analysis — statistical analysis of environmental data, trend analysis, and report writing. R or Python proficiency developed through statistics and GIS courses adds significant value.
Regulatory knowledge — understanding environmental regulations and compliance requirements. Environmental consultants spend much of their time ensuring clients meet regulatory standards.
Interdisciplinary thinking — connecting biological, chemical, geological, and social perspectives on environmental problems. This breadth is the defining strength of the degree.
The Bureau of Labor Statistics projects that environmental scientist and specialist positions will grow about 6% between 2023 and 20332. However, the growth in environmental consulting, which employs a large share of environmental science graduates, is driven largely by regulatory requirements and remediation projects. When regulations expand, hiring increases; when they contract, so does the job market.
What Nobody Tells You About Environmental Science Requirements
The interdisciplinary nature means you are a generalist. Environmental science gives you breadth across biology, chemistry, earth science, and policy, but you may not go as deep in any single area as a biology, chemistry, or geology major. For careers that require deep expertise in one science, consider whether a traditional science major with environmental electives might serve you better.
Field work is physically demanding and sometimes uncomfortable. Wading into streams, hiking to remote sampling locations, working in extreme weather, and handling soil and water samples is part of the curriculum and the career. If outdoor physical work does not appeal to you, this is an important consideration.
The entry-level salary in environmental science is modest. Starting salaries for bachelor's-level environmental scientists at consulting firms typically range from $40,000 to $55,000. Salaries increase with experience and certifications, but the early career earnings are lower than many STEM fields. A master's degree can increase starting salary significantly.
Certifications matter for career advancement. Professional certifications like the Certified Environmental Professional (CEP) or state-specific certifications (e.g., Licensed Environmental Professional) increase your competitiveness and salary. Plan to pursue certifications after a few years of work experience.
The job market is geographically uneven. Environmental science jobs concentrate in areas with significant regulatory activity, military bases requiring remediation, or active natural resource industries. States with strong environmental regulations (California, New York, New Jersey, Massachusetts) tend to have more positions than states with lighter regulatory environments.
FAQ
How much math does an environmental science degree require?
Most programs require Calculus I and one or two semesters of statistics. Some also require Calculus II. The math is used primarily for data analysis, GIS, and understanding quantitative environmental models. The math requirements are less intensive than engineering or chemistry but more than most social sciences.
Can I get a job with just a bachelor's in environmental science?
Yes. Entry-level positions in environmental consulting, government agencies, and nonprofit organizations are accessible with a bachelor's degree. Common titles include environmental technician, field scientist, GIS analyst, and environmental compliance specialist. A master's degree opens more doors and increases salary, but it is not required for entry-level work. See the environmental science careers page for specifics.
What is the difference between environmental science and ecology?
Ecology is one discipline within environmental science. Ecology focuses specifically on the relationships between organisms and their environment. Environmental science is broader, encompassing ecology plus environmental chemistry, geology, policy, and human impacts. An ecology degree provides deeper biological training; an environmental science degree provides broader interdisciplinary preparation.
Is environmental science a good pre-med major?
It can fulfill many medical school prerequisites (biology, chemistry, physics, statistics) depending on the specific program, but it is not designed for pre-med preparation. If you want to combine environmental health with medicine, verify that your program's chemistry and biology courses meet medical school requirements. A biology or chemistry major with environmental electives may be a more efficient path.
Do I need GIS skills for environmental science careers?
GIS proficiency is not required for every environmental science position, but it is the most competitive advantage you can build during the program. Consulting firms, government agencies, and conservation organizations increasingly expect at least basic GIS skills. Advanced GIS proficiency makes you significantly more competitive and often commands higher starting salaries.
How is environmental science different from environmental engineering?
Environmental science focuses on understanding environmental systems and the impacts of pollution and human activity. Environmental engineering focuses on designing solutions — water treatment systems, air pollution controls, waste management infrastructure. Engineering requires more math (through differential equations) and leads to different career paths. If you want to design systems, consider engineering. If you want to study and analyze environmental problems, environmental science is the fit.
- Environmental Science Degree Guide — Overview
- Is It Worth It?
- Career Paths
- Salary Data
- How Hard Is It?
- Internships
Footnotes
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National Center for Education Statistics. (2024). Digest of Education Statistics: Table 322.10 — Bachelor's degrees conferred by postsecondary institutions, by field of study. NCES. https://nces.ed.gov/programs/digest/d23/tables/dt23_322.10.asp ↩
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U.S. Bureau of Labor Statistics. (2025). Occupational Outlook Handbook: Environmental Scientists and Specialists. BLS. https://www.bls.gov/ooh/life-physical-and-social-science/environmental-scientists-and-specialists.htm ↩
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U.S. Bureau of Labor Statistics. (2025). Occupational Outlook Handbook: Conservation Scientists and Foresters. BLS. https://www.bls.gov/ooh/life-physical-and-social-science/conservation-scientists.htm ↩