data centers
Is it dangerous to live near a data center?
Spoiler: your neighbors are servers. They're very quiet at parties.
What's real
- Noise: cooling fans and chillers hum around the clock, because data centers run 24/7[14]. Smaller diesel backup generators reach about 85 dB and large ones approach 100 dB[3]. Residents near data centers in Loudoun County, Virginia have reported disrupted sleep and headaches[3].
- Generator exhaust: each data center has many diesel backup generators that are tested regularly[8]. EPA allows up to 50 hours a year of testing[15]. Washington state says the harmful emissions are mostly tiny diesel particles and nitrogen dioxide, which can make breathing harder for people with asthma[8].
- Light: large sites keep lights on all night[16].
- Water: in small systems a data center can be a big customer. Meta's data center in Newton County, Georgia uses about 500,000 gallons a day, 10% of the county's water use[12].
- Construction: a big build means trucks for a year or two.
- Power lines: new transmission sometimes crosses private land.
What's inside
Rows of computers and the equipment that keeps them cool. The electronics give off low-level non-ionizing electromagnetic fields, the same kind as household electronics, and they stay close to the building[10]. The parts neighbors notice are all on the outside: cooling units, backup generators, lights and the power hookup. That's where the rules should focus.
If one is coming to your town
Go to the hearing with this list:
- A noise limit measured at the property line, at night.
- Battery backup instead of diesel where possible. Large on-site batteries remove generator noise and pollution[11].
- A health impact assessment for the generators. Washington state reviews one before it issues the construction permit[8].
- A lighting plan that keeps light on the site.
- Closed-loop or air cooling if water is tight[1].
- A site in an industrial zone with power and fiber. Data centers don't have to be next door to anyone[13].
- A tax agreement that funds schools.
Then let them build.
Measured, modeled, or myth?
Most of the scary numbers on this topic come from models, not from measuring sick neighbors. Here's the honest sort.
- Measured: generator noise levels[3], permitted generator emissions[8], water use at specific sites[12].
- Modeled: a Caltech and UC Riverside study estimated that backup generators in Northern Virginia create $190 million to $260 million a year in regional public health costs[6]. An advocacy group cites projections of about 600,000 asthma symptom cases nationally in 2030[16]. These are estimates of what pollution could do, not counts of illness.
- Not yet studied: long-term health outcomes in host communities. A 2025 commentary in Eco-Environment & Health says 'little is known' and calls for empirical research[7].
- Myth: dangerous radiation[10], bills up 267%[5], home values crashing[9].
How far should you live from a data center?
We found no national safe-distance standard in any source. Distance matters most for two things: generator exhaust and noise. So the useful question isn't 'how many miles' but 'what does this site's modeling show at my house'. Ask for the noise contour map and the generator air dispersion modeling. In Washington state, a health impact assessment has to be reviewed before a data center can be built or expanded[8].
Do data centers hurt home values?
The best national data says no clear effect. The National Association of Realtors found the median home value is $431,750 in counties with 10 or more data centers versus $174,500 in counties with none, with 95% decade growth against 64%[9]. NAR warns that correlation is not causation and that county data can't show what happens to one house next to a fence line. In its agent survey, 25% saw a positive effect on nearby values and 22% a negative one[9].
What's good about living near one
Data centers pay a lot of property tax and ask little back. In Loudoun County they paid 39% of the county budget in fiscal 2026[2]. Once built, they add little traffic and no students. And an EPRI study found that data center growth modestly lowered average electricity rates from 2015 to 2024[4].
FAQ
Do data centers cause health problems?
The concerns raised most are noise and emissions from backup diesel generators. Generators need air permits. Ask your county for the noise study and the permit.
How loud is a data center?
It varies by design and distance. Ask for the noise study and a limit at the property line.
Do data centers lower home values?
Studies vary by market. Ask for local data rather than trusting either side's claims.
How far away is it safe to live from a data center?
No source we found sets a national safe distance. Exposure depends on the site's generators, cooling equipment and layout, not a fixed number of miles. Ask your county for the noise contour map and the generator air permit. Washington state requires a health impact assessment review before construction[8].
What happens if you live near a data center?
Most neighbors notice a steady hum from cooling equipment, occasional generator testing, night lighting, and a year or two of construction traffic. Generators are tested regularly and need air permits[8]. Long-term health outcomes for neighbors have not been studied yet, researchers say[7].
Do data centers emit a lot of radiation?
No. Servers and power equipment give off low-level non-ionizing electromagnetic fields, the kind household electronics produce, not the ionizing kind from X-rays. The fields stay close to the building, and a nearby data center probably won't raise your exposure above what's already around you[10].
Do data centers hurt property value?
National data shows no single effect. Counties with 10 or more data centers have higher median home values and faster growth than counties with none, but NAR says that's correlation, not proof[9]. In NAR's survey, 25% of agents saw a positive effect on nearby homes and 22% a negative one[9].
Are data centers bad for your health?
No study has yet measured long-term health outcomes near data centers[7]. The modeled risk comes mainly from diesel backup generators, whose particles and nitrogen dioxide can make breathing harder for people with asthma[8]. That's why generator permits, testing limits and battery backup matter[11].
Sources
- Lawrence Berkeley National Laboratory, 2024 United States Data Center Energy Usage Report (Shehabi et al., Dec 2024)
- Loudoun County, 'Data Centers: The Loudoun Story'
- World Resources Institute, 'From Energy Use to Air Quality, the Many Ways Data Centers Affect US Communities' (Carla D. Walker, Ian Goldsmith)
- EPRI ESCA Back Pocket Insights, 'Have Data Centers Raised Your Electric Bill?' (Asa Watten, John Bistline, Geoff Blanford), brief of the white paper 'Causal Evidence from the United States'
- PolitiFact, 'How much have data centers increased electricity prices?' (Caleb McCullough)
- UC Riverside News, 'AI's deadly air pollution toll' (David Danelski), on arXiv 2412.06288 (Han, Wu, Li, Wierman, Ren)
- Tao and Gao, 'Global data center expansion and human health: A call for empirical research', Eco-Environment & Health 4(3) 100157 (NIH PMC)
- Washington State Department of Ecology, 'Data centers'
- National Association of Realtors, 'There's No Single Data Center Effect on Housing Markets, NAR Report Finds' (2026 Data Center Impact Report)
- BGR, 'What Kind Of Radiation Do Data Centers Emit?' (Briley Kenney)
- Caltech Science Exchange, 'What are the pros and cons of data centers?' (Adam Wierman interview)
- Lincoln Institute of Land Policy, Land Lines, 'Data Drain: The Land and Water Impacts of the AI Boom' (Jon Gorey)
- UChicago Energy Policy Institute (EPIC), repost of UChicago News, 'What are data centers, and why do they need so much power? An expert explains' (Andrew A. Chien)
- Nature Forward, 'Data Centers and Water Use' (Craig Carlson)
- Environmental and Energy Study Institute (EESI), 'Data Centers Are Hotbeds of Health Risks' (Miguel Yanez-Barnuevo)
- Environmental Health Project, 'The Dangers of Data Centers' (Elan Justice Pavlinich)
Keep reading
