Why Is Environmental Health Important? Key Factors Shaping Public Health

The physical spaces we inhabit have a profound influence on our overall well-being. From the air we breathe to the water we drink, external factors can promote wellness or increase the risk of disease. Understanding the importance of environmental health requires looking closely at how our surroundings shape population health outcomes on a daily basis. This guide will define environmental health, review common environmental health issues, and highlight the top factors demonstrating the importance of environmental health in modern society.

What Is Environmental Health?

Environmental health is the field dedicated to preventing or controlling disease, injury, and disability related to the interactions between people and their environment.² The World Health Organization describes the environment in a health context as all the physical, chemical, and biological factors external to a person, along with all related behaviors.⁵

There is a critical, interconnected relationship between environmental and public health. As a key part of any comprehensive public health system, this discipline advances policies and programs that reduce chemical and other environmental exposures.⁶ Public health professionals investigate the links between environmental factors and human health, assessing population exposure to emerging threats and implementing comprehensive public health strategies to mitigate adverse effects.

What Is the Importance of Environmental Health in Our Community?

To appreciate the importance of environmental health in our community, it is helpful to look at daily routines. Everyday necessities such as showers, drinking water, restaurants, and swimming pools are safer because environmental health professionals monitor water quality, inspect facilities, test for contaminants, and enforce safety codes.⁴

The fundamental mission of agencies such as the Environmental Protection Agency (EPA) is to protect human health and safeguard the natural environment upon which life depends.⁷ Neighborhood factors—including housing quality, proximity to pollution sources, and access to green space—have a significant impact on health, meaning that implementing community-based health interventions is essential.² Local initiatives track data and drive actions to improve overall community health, ensuring that public water supplies meet safety regulations and residents are protected from localized hazards.

Common Environmental Health Issues

Many distinct environmental health issues threaten community safety today. Some of the most prevalent hazards include:

• Air pollution: Exposure to unhealthy air is linked to respiratory diseases, heart disease, cancer, and early death⁸
• Water contamination and sanitation: According to UNICEF's 2023 data, approximately 1,000 children under age 5 die every day from diarrheal diseases that could have been prevented by basic water, sanitation, and hygiene services⁹
• Hazardous sites: Chemicals from toxic sites can seep into drinking water or the air to create negative health effects for entire communities¹⁰
• Extreme heat: Rising temperatures and climate-related risks continue to increase diseases and deaths related to extreme heat¹¹
• Lead exposure and housing-related hazards: Deteriorating housing with lead paint, mold, and poor ventilation contributes to chronic illness, particularly in children and low-income communities¹⁰

The 10 Most Important Environmental Health Factors

The 10 most important environmental health factors highlight how these efforts protect communities on a global scale. Addressing these specific areas prevents disease outbreaks, prolongs life, and ensures a safer future for everyone:

1. Prevent global disease and death: According to WHO estimates (2016), approximately 24% of all global deaths are linked to the environment, totaling about 13 million deaths each year¹²

2. Lower respiratory and cardiovascular risk: Improving air quality helps reduce asthma attacks, cardiovascular events, heart attacks, and strokes¹³

3. Protect safe drinking water: Securing clean water sources ensures that community supplies meet stringent safety regulations²

4. Reduce child mortality: According to WHO, roughly 26% of childhood deaths and 25% of the disease burden in children under 5 are attributable to environmental exposures¹⁴

5. Monitor local hazards: Integrating health and socioeconomic data allows agencies to respond rapidly to community-level health threats¹⁵

6. Address climate threats: Monitoring changes in clean air, water, and food systems helps combat fundamental threats to human health¹⁶

7. Support vulnerable populations: Environmental health initiatives focus on reducing disproportionate hazard burdens on marginalized and low-wealth communities⁶

8. Guide public policy: Setting measurable national objectives for toxic pollutants helps establish robust prevention goals²

9. Strengthen emergency readiness: Environmental health studies support investigations of disease clusters and provide technical assistance during outbreaks¹⁷

10. Advance community-wide protection: Trained environmental health professionals assess risks, enforce regulations, and design interventions that safeguard entire populations from preventable exposures¹⁸

Shape the Future of Public Health With an Online Master of Public Health From Kent State University

Recognizing what is public health means acknowledging the crucial role that our physical environments play in shaping population outcomes. By mitigating air pollution, water contamination, and other environmental health issues, dedicated professionals save lives and improve community well-being.

If you want to lead these essential efforts, Kent State University offers comprehensive programs designed for your success. Whether you are pursuing a Bachelor of Science in Public Health or an online Master of Public Health, you can build the knowledge and applied practical experience—including fieldwork, capstone projects, and real-world case studies—that may prepare you to contribute meaningfully to the field.

Take the next step toward a rewarding career by exploring tuition and financial aid options and reviewing our admissions requirements. Contact us or schedule a call with an admissions outreach advisor today to begin your journey.