University of Arizona

What you'll study

The programme emphasises interdisciplinary research linking exposure science, toxicology, environmental epidemiology, molecular mechanisms and risk assessment. Core study typically includes advanced environmental epidemiology, exposure assessment methods, environmental toxicology, biostatistics and research methods. Students also take modules in spatial analysis and GIS for environmental health, environmental policy and regulation, molecular and cellular approaches to toxicology, and study design and ethics.

Training is research-focused: students complete coursework in the early years, pass qualifying or comprehensive examinations, and spend the majority of the programme conducting an independent dissertation research project under faculty supervision. Typical components of the doctoral pathway include laboratory or field rotations (depending on research area), teaching or assistantship responsibilities, preparation of peer-reviewed manuscripts, grant-writing workshops and a final oral defence of the dissertation.

Entry requirements

Applicants normally hold a relevant bachelor’s or master’s degree in public health, environmental science, biology, chemistry, toxicology, engineering or a related discipline. Strong preparation in quantitative methods (statistics, biostatistics or quantitative environmental methods), laboratory or field research experience and a record of independent research are highly valued. The application package should include academic transcripts, a CV, a statement of purpose outlining research interests, and contact details for academic references (typically three).

International applicants are required to demonstrate English language proficiency through an approved test unless exempt. The programme considers applications holistically and may require additional materials such as a writing sample, publications or a description of previous research. Prospective students are encouraged to contact potential faculty supervisors whose research aligns with their interests prior to applying.

Career prospects

Graduates from the PhD in Environmental Health pursue a wide range of careers. Many continue in academic research and teaching as postdoctoral researchers and faculty; others join government agencies and public health departments at national, regional and local levels where they work on exposure assessment, environmental surveillance, regulation and policy. Additional career paths include roles in environmental consulting, risk assessment and compliance in industry, positions in non-governmental organisations focused on environmental justice and community health, and research scientist roles in clinical and translational settings.

The programme’s emphasis on rigorous quantitative training, laboratory and field methods, and policy-relevant research prepares graduates for interdisciplinary teams addressing air and water quality, contaminant fate and transport, occupational exposures, climate-related health impacts, and environmental determinants of disease.

Why study at University of Arizona

The University of Arizona offers an interdisciplinary environment for environmental health research, anchored by the Mel and Enid Zuckerman College of Public Health and collaborative institutes such as BIO5. Students benefit from strong links to departments in atmospheric sciences, hydrology, ecology, epidemiology and engineering, which support cross-cutting projects on air quality, water contamination, desert ecosystems and climate impacts.

Facilities and opportunities include access to laboratory and field research platforms, GIS and spatial analysis resources, and partnerships with state and local public health agencies and community groups across the southwestern region. Doctoral students typically receive mentoring from faculty with active funded research programmes, opportunities to teach and present at conferences, and support for professional development including grant writing and science communication.