How Do Data Centers Impact Public Health?

As data centers multiply across the country to power artificial intelligence, researchers are raising concerns about their effects on nearby communities' health. These facilities draw huge amounts of power, often from fossil fuels, and release particulate matter and other pollutants linked to heart disease, stroke, and cognitive decline. Many also run diesel backup generators that emit far more pollution than gas power plants. Beyond air quality, data centers generate significant heat, noise, and light pollution, which can raise local temperatures, disturb sleep, and trigger stress responses tied to high blood pressure and heart disease. Some facilities also use PFAS, long-lasting chemicals linked to cancer and fertility problems, for cooling and fire suppression.

For homeowners, the impact can also show up on energy bills. Data centers draw heavily on regional power grids, which can push up electricity costs, forcing some households to cut back on heating, cooling, or even health care to cover the expense. The facilities also use large amounts of water, which can worsen drought conditions in some regions.

A few states, including Massachusetts, New Jersey, and Minnesota, already require a process called cumulative impacts analysis for certain industrial projects, which looks at the combined burden of pollution and other stressors on a community before approving permits. None yet have rules written specifically for data centers, though advocates argue this kind of review could help identify risks before facilities are built and push developers toward measures like reusing waste heat or using battery backup instead of diesel generators. Whether your area has such protections, or is considering a new data center, likely depends on your state and local permitting rules.