What Does an Industrial Hygienist Do?
The illnesses this job prevents often take years to appear. Industrial hygienists work in factories, hospitals, labs and on building sites, measuring the solvent vapor, silica dust, welding fume, noise and heat people face each shift and designing practical controls that bring those exposures down.
Industrial Hygienist Duties and Responsibilities
The primary responsibilities of an industrial hygienist include:
- Sample the air in workers' breathing zones for dusts, solvents and metals, and send media to accredited labs.
- Measure noise, heat stress and ventilation airflow with calibrated meters and note the working conditions.
- Compare results with OSHA limits and ACGIH guidance, then explain what they mean to managers.
- Recommend engineering controls such as local exhaust hoods, enclosures or safer substitute chemicals.
- Run the respirator program, including fit tests, medical clearance paperwork and cartridge change schedules.
- Investigate odor, mold and indoor air complaints from office and classroom occupants.
- Survey buildings for asbestos and lead before renovation and plan abatement with contractors.
- Write exposure assessments and keep sampling records for as long as the law requires.
- Coach employees on hazard communication, safety data sheets and the right protective equipment for each task.
- Review plans for new processes and equipment to catch exposure problems before they start.
Required Skills and Qualifications
To succeed as an industrial hygienist, you will need the following skills and qualifications:
- Certified Industrial Hygienist (CIH) credential or eligibility
- Air, noise and heat stress sampling methods
- Direct-reading instruments such as photoionization detectors and particle counters
- OSHA standards and ACGIH exposure limits
- Ventilation and exposure control basics
- Chemistry, toxicology and statistics
- Reports that managers can act on
- Tact with workers who are worried about their health
Education and Training
Most industrial hygienists enter with a bachelor's degree in industrial hygiene, chemistry, biology or engineering, but some start out by taking safety technician jobs and studying part time. Many employers want hygienists board certified. The CIH exam asks for a science degree plus years of professional practice, so most hygienists sit it a few years into their careers.
Salary and Job Outlook
Typical pay: $69,560 - $111,690 per year, with a median of $90,150.
The range covers the middle half of earners nationwide. Source: U.S. Bureau of Labor Statistics, Occupational Employment and Wage Statistics, May 2025, Occupational Health and Safety Specialists.
BLS projects employment of occupational health and safety specialists, the group that includes industrial hygienists, to grow about 18 percent from 2025 to 2035. The group should see about 17,100 openings a year. For a new graduate, progression is often steady and chances to move into consulting or EHS management tend to open up once the CIH is in hand.
Outlook source: U.S. Bureau of Labor Statistics, Employment Projections, 2025 to 2035, Occupational health and safety specialists.