Data center health issues in the US in 2026 center on air pollution, noise and cancer-risk claims, and most published figures are modeled estimates: UC Riverside and Caltech project up to 1,300 premature deaths and 600,000 asthma symptom cases a year by 2030 from data center-related pollution. Data centers used 4.4% of US electricity in 2023 and could use 6.7% to 12% by 2028, while no direct study has yet confirmed cancer or noise-related illness in people living near US data centers.
Data Center Health Issues in US 2026 – Introduction
Data center health issues moved from fringe worry to local ballot fights in 2026. Residents near server farms in Virginia, Tennessee, Mississippi and Wisconsin report sleep loss, headaches and breathing trouble. Lawsuits target gas turbines at the xAI Colossus sites. State lawmakers debate limits on diesel backup generators. The pressure comes from scale: US data centers drew 176 terawatt-hours of power in 2023, and researchers expect that figure to rise as much as 3.3 times by 2028.
The science is thinner than the headlines. Most health numbers come from emissions models, not studies of people living next to a facility. That gap matters for air pollution, noise and cancer risk alike. This report separates what is measured from what is modeled, and it names who makes each claim. Every figure below carries a source and a date.
Interesting Facts about Data Center Health Issues in US 2026
US DATA CENTER ELECTRICITY USE IN TWH (each █ = 20 TWh)
2014 | ███ 58
2018 | ████ 76
2023 | █████████ 176
2028 low case | ████████████████ 325
2028 high case| █████████████████████████████ 580
| Fact | Data |
|---|---|
| Data center share of US electricity, 2023 | 4.4% |
| Projected share by 2028 | 6.7% to 12% |
| Projected premature deaths a year by 2030 | 1,300 (range 940 to 1,590) |
| Projected asthma symptom cases a year by 2030 | 600,000 |
| Projected annual health cost by 2030 | About $20 billion |
| Northern Virginia backup generators | More than 9,000 |
| xAI turbines in Southaven, Mississippi | 27 |
| Direct studies of illness near US data centers | Sparse |
Source: Lawrence Berkeley National Laboratory and US Department of Energy, 2024 report; UC Riverside and Caltech, “The Unpaid Toll,” December 2024; Southern Environmental Law Center, April 14, 2026.
Berkeley Lab found that data centers used 4.4% of US electricity in 2023, up from 1.9% in 2018. It expects 6.7% to 12% by 2028. More power means more fuel burned at power plants and more diesel and gas burned on site. UC Riverside and Caltech turned that into a health estimate of 1,300 premature deaths and 600,000 asthma symptom cases a year by 2030.
Local numbers sit beside the national ones. Northern Virginia has more than 9,000 backup generators. In Southaven, Mississippi, a nearby plant runs 27 gas turbines for xAI. The last row of the table is the caveat: a literature review found that direct evidence on illness near data centers remains sparse. Treat each figure above as an estimate or a claim under dispute.
Data Center Electricity Use and Air Pollution Sources in US 2026
DATA CENTER SHARE OF US ELECTRICITY (each █ = 0.5%)
2018 | ████ 1.9%
2023 | █████████ 4.4%
2028 low case | █████████████ 6.7%
2028 high case| ████████████████████████ 12.0%
| Year | Electricity Use | Share of US Electricity |
|---|---|---|
| 2018 | 76 TWh | 1.9% |
| 2023 | 176 TWh | 4.4% |
| 2028 low case | 325 TWh | 6.7% |
| 2028 high case | 580 TWh | 12.0% |
Source: Lawrence Berkeley National Laboratory, 2024 United States Data Center Energy Usage Report, published by the US Department of Energy, December 2024.
Electricity use more than doubled from 76 TWh in 2018 to 176 TWh in 2023, which took the share from 1.9% to 4.4%. Growth ran about 7% a year from 2014 to 2018, then about 18% a year from 2018 to 2023. The 2028 range runs from 325 TWh to 580 TWh, or 1.8 to 3.3 times the 2023 level by our calculation.
Power use matters for health because of how that power is made. Fossil plants emit fine soot, nitrogen oxides and sulfur dioxide. On-site diesel generators and gas turbines add more. The Berkeley Lab report does not estimate health effects. It only sets the demand that the pollution studies build on, so a lower or higher 2028 case moves every downstream estimate with it.
Data Center Air Pollution Deaths and Asthma Cases in US 2026
PROJECTED PREMATURE DEATHS A YEAR FROM DATA CENTER AIR POLLUTION (each █ = 50)
2023 estimate | ███████ 360
2030 midpoint | ██████████████████████████ 1,300
| Metric | 2023 Estimate | 2030 Projection |
|---|---|---|
| Premature deaths a year | 360 | 1,300 (range 940 to 1,590) |
| Annual public health cost | $5.6 billion | About $20 billion |
| Asthma symptom cases a year | Not reported here | 600,000 |
Source: UC Riverside and Caltech, “The Unpaid Toll: Quantifying the Public Health Impact of AI,” December 2024. Researchers used US EPA health-cost methods. These are modeled estimates, not counted cases.
The researchers estimated 360 premature deaths and $5.6 billion in health costs for 2023. Their 2030 midpoint is 1,300 deaths, within a range of 940 to 1,590, and about $20 billion a year. That is 3.6 times the 2023 figure for both deaths and cost, by our calculation. They also project 600,000 asthma symptom cases a year. The costs include missed work and school days.
Two cautions apply. First, a later advocacy summary restated the same study as $11.7 billion to $20.9 billion by 2028 under high growth, so dates vary by source. Second, the study models average power-plant emissions by region and does not count patients. The authors say pollution crosses state lines, so a data center in one county can affect people far away.
Data Center Backup Generator Emissions in Virginia 2026
SHARE OF PERMITTED GENERATOR EMISSIONS ACTUALLY EMITTED (each █ = 2%)
Emitted | ████ 7%
Permitted but unused | ██████████████████████████████████████████████ 93%
| Metric | Figure | Who Reports It |
|---|---|---|
| Backup generators serving Northern Virginia data centers | More than 9,000 | State lawmakers’ briefing |
| Emissions as a share of the permitted maximum | 7% | State legislative auditors |
| Typical generator run time | 10 to 30 minutes a month | State legislative auditors |
| Worst-case nitrogen oxides if all run at permit limits | 9,000 tons | State legislative auditors |
| Fire-related outage in Loudoun County, 2025 | Generators ran 4 to 5 days | Local officials |
Source: Virginia Joint Legislative Audit and Review Commission; Data Center Coalition statement, June 2026; Virginia Mercury, 2026; VPM, December 17, 2025. The 93% figure is our calculation.
The industry and its critics read the same audit differently. The Data Center Coalition cites the state auditors’ finding that actual emissions reached only 7% of the permitted maximum and that generators often run 10 to 30 minutes a month. Critics point to the 9,000 tons of nitrogen oxides the auditors calculated for a worst case. They note that more than 9,000 generators could start together in a grid emergency.
The Loudoun fire shows the gap. When a substation fire cut power, generators ran for 4 to 5 days, and residents complained quickly. Virginia’s environmental agency then widened what counts as an emergency for older Tier II diesel units, which lack pollution controls. Cleaner Tier IV units cost more. A VCU researcher said that using generators to supply the grid, not just the data center, would be the worst case for air quality.
xAI Memphis and Southaven Turbine Pollution and Cancer Risk in US 2026
ESTIMATED ANNUAL EMISSIONS, SOUTHAVEN TURBINES (tons, each █ = 10 tons)
Carbon monoxide | ██████████████████████████████████████████████████ 500
Fine particulates | ██████████████████ 180
Formaldehyde | ██ 19
| Metric | Figure | Source |
|---|---|---|
| Turbines at Southaven, Mississippi | 27 | Southern Environmental Law Center |
| Turbines permitted at Colossus 1, Memphis | 15 | Shelby County Health Department |
| Permit approval date | July 2, 2025 | Shelby County Health Department |
| Public comments on the permit | More than 1,700 | Shelby County Health Department |
| Estimated carbon monoxide, fine particulates, formaldehyde | 500, 180 and 19 tons a year | Southern Environmental Law Center |
| Existing cancer risk in Boxtown | 4 times national average | Southern Environmental Law Center, NAACP |
| Shelby County ozone grade | F | American Lung Association |
Source: Southern Environmental Law Center news release, April 14, 2026; Shelby County Health Department; American Lung Association. Emission totals are the law center’s estimates. Allegations are not court findings.
The Southern Environmental Law Center and the NAACP sued xAI in April 2026. They allege that 27 gas turbines in Southaven ran without an air permit and release about 500 tons of carbon monoxide, 180 tons of fine particulates and 19 tons of formaldehyde a year. The company’s response to the lawsuit was not found in the sources reviewed. The Memphis site, Colossus 1, received a permit for 15 turbines on July 2, 2025, after 1,700 public comments.
Read the cancer number with care. The 4 times national average figure describes cancer risk that already existed in the Boxtown area before xAI arrived, according to the law center. It is not a measured effect of the turbines. Formaldehyde is a recognized carcinogen, and the groups argue that added exposure raises risk for a community already burdened by industrial pollution. No study has yet measured a change in cancer cases there.
Data Center Cancer Risk in US 2026: What the Evidence Shows
REPORTED BACKGROUND CANCER RISK, SOUTH MEMPHIS VS US AVERAGE (each █ = 1x)
US average | █ 1x
Boxtown, Memphis | ████ 4x
| Question | What Exists | Status |
|---|---|---|
| Do emissions include cancer-linked chemicals? | Formaldehyde and diesel particulates appear in turbine and generator exhaust | Supported by permit and law center estimates |
| Have models linked data center pollution to cancer? | UC Riverside and Caltech list cancers among modeled harms | Modeled, not counted |
| Is there direct evidence of cancer near US data centers? | Direct epidemiologic evidence is sparse | Not established |
| Have worker health outcomes been studied? | A peer-reviewed review found no such study | Not studied |
Source: Southern Environmental Law Center, 2026; UC Riverside and Caltech, December 2024; OSF preprint “Health Consequences of Large Data Centers,” 2026; MDPI Clean Technologies review.
The honest answer to “do data centers cause cancer” is that nobody has shown it yet. Emissions from turbines and diesel units contain chemicals linked to cancer, and modelers include cancer in their cost totals. A 2026 literature review states that direct epidemiologic evidence on communities near data centers remains sparse. It relies on lifecycle emissions modeling and analogies to older air and noise research.
That absence cuts both ways. It does not prove safety, and it does not prove harm. Cancer takes years to appear, so studies of facilities built since 2023 may not show effects for a decade. For now, the strongest claims are about exposure, such as tons emitted, and about asthma and heart disease, which respond faster to pollution than cancer does.
Data Center Noise Levels and Health Effects in US 2026
NOISE BENCHMARKS IN DECIBELS (each █ = 4 dB)
WHO night limit, road traffic | ███████████ 45
EPA speech interference level | █████████████ 52
WHO day-evening-night limit | █████████████ 53
Loudoun County threshold | ██████████████ 55
Sustained-noise heart risk level | ██████████████████ 70
Inside server halls, upper range | ████████████████████████ 96
| Benchmark | Decibels | Context |
|---|---|---|
| WHO night guideline, road traffic | 45 dB | Above this, adverse health effects rise |
| EPA speech interference level | 52 dB(A) | Measured at 10 meters |
| WHO day-evening-night guideline, road traffic | 53 dB | Average over 24 hours |
| Loudoun County, Virginia limit | 55 dB | Local noise threshold |
| Sustained-noise health risk level | 70 dB | Linked to heart disease and hearing loss |
| Inside server halls | Up to 96 dB | Reported upper range |
Source: World Health Organization environmental noise guidelines; US EPA, cited in Prince William County materials, 2024; Business Insider, 2024; Environmental and Energy Study Institute, 2025.
Data center noise is a steady low-frequency hum from fans, chillers and generators. Residents in Loudoun County compare it to a hovering helicopter. Facilities can meet the county’s 55 dB limit and still draw complaints, because standard A-weighted meters understate low-frequency sound. The WHO’s night guideline for road traffic is 45 dB, so a facility can pass local rules and still exceed the health benchmark.
Health evidence is the weak link. The WHO ties excess noise to high blood pressure, heart disease and poor sleep. A September 2026 expert review from UNSW says researchers have no data yet that identifies health effects from data centers specifically. Sustained noise above 70 dB is linked to heart disease, and data center noise at homes generally sits below that. The open question is long-term low-frequency exposure.
Data Center Water Use and Community Health Stress in US 2026
DIRECT WATER USE BY US DATA CENTERS (billions of liters, each █ = 5)
2014 | ████ 21.2
2023 | █████████████ 66
2028 hyperscale low | ████████████ 60
2028 hyperscale high | █████████████████████████ 124
| Metric | Figure | Source |
|---|---|---|
| Direct water use, 2014 | 21.2 billion liters | Berkeley Lab |
| Direct water use, 2023 | 66 billion liters | Berkeley Lab |
| Share used by hyperscale facilities, 2023 | 84% | Berkeley Lab |
| Hyperscale use projected for 2028 | 60 to 124 billion liters | Berkeley Lab |
Source: Lawrence Berkeley National Laboratory, 2024 United States Data Center Energy Usage Report, as reported by DatacenterDynamics.
Direct water use tripled from 21.2 billion liters in 2014 to 66 billion liters in 2023, and hyperscale operators used 84% of it. Hyperscalers alone could use 60 to 124 billion liters by 2028. The report counts direct cooling water, and it does not count the water used to generate electricity.
Water ties to health through supply stress. A 2026 review lists intensive withdrawals that strain public supplies among the health-relevant pathways, next to air pollution and noise. It also finds that per-household health cost burdens reach several times the national average in some disadvantaged counties. The Berkeley Lab data show scale, not harm, so local supply and quality records decide whether a given site hurts nearby residents.
Data Center Health Regulation Timeline in US 2026
2025-2026 REGULATORY ACTIONS ON DATA CENTER EMISSIONS BY LEVEL (each █ = 1 action)
State agency or legislature | ███ 3
Federal agency | █ 1
Court | █ 1
| Date | Action | Level |
|---|---|---|
| Fall 2025 | Virginia environmental agency widens the emergency definition for Tier II diesel generators | State agency |
| January 2026 | Virginia bills seek Tier IV-only permits and a one-year study of standby generators | State legislature |
| Late January 2026 | Department of Energy lets PJM data centers run on generators during a cold snap | Federal agency |
| February 17, 2026 | Mississippi regulators hold a hearing on the Southaven turbine plant permit | State agency |
| April 14, 2026 | NAACP files a Clean Air Act lawsuit against xAI | Court |
Source: Virginia Mercury, January 14, 2026; VPM, December 17, 2025; Oil and Gas Watch; Southern Environmental Law Center, April 14, 2026. Action counts by level are our calculation.
Five actions in about six months show how fast rules are shifting. Virginia moved first in fall 2025, when its environmental agency let Tier II diesel generators run in more situations. In January 2026, lawmakers answered with bills that would deny permits to units below Tier IV standards and order a one-year study of every permitted standby generator. Neither step has produced a finished national rule.
Federal and court action followed. The Department of Energy let data centers on the PJM grid run on generator power through the late-January cold snap, even where that exceeded permitted emissions. On February 17, 2026, hundreds of residents attended the Mississippi hearing on the Southaven plant. The April 14, 2026 lawsuit moved the dispute into federal court. Three of the five actions came from state bodies, which is why permit rules differ so much by state.
Industry and Researcher Positions on Data Center Health Risks in US 2026
BACKUP GENERATOR RUN TIME, REPORTED RANGE (minutes per month, each █ = 1 min)
Low end | ██████████ 10
High end | ██████████████████████████████ 30
| Group | Position | Key Figure |
|---|---|---|
| Data Center Coalition | Generator use is rare and short; permits limit emissions | 7% of permitted maximum |
| Virginia legislative auditors | Use is minimal, but worst-case emissions are large | 9,000 tons nitrogen oxides |
| UC Riverside and Caltech | Pollution carries large health costs | 1,300 deaths a year by 2030 |
| Southern Environmental Law Center and NAACP | Unpermitted turbines endanger nearby residents | 27 turbines |
| US Department of Energy | Allowed PJM data centers to run on generators in a January 2026 cold snap | Above permitted emissions |
Source: Data Center Coalition statement, June 2026; Virginia Joint Legislative Audit and Review Commission; UC Riverside and Caltech, 2024; Southern Environmental Law Center, 2026; Virginia Mercury, 2026.
Each group cites real numbers and reaches a different view. The Data Center Coalition says its members run backup generators only for maintenance, testing and grid outages, and that regulators set limits to protect health. Auditors confirm light use but flag a large worst case. Researchers model national harm. Advocates focus on facilities they say broke permit rules. None of these claims counts patients near a site.
Government actions point in two directions. Virginia lawmakers debated rules that would require cleaner Tier IV generators for new permits. At the same time, the Department of Energy let data centers in the PJM grid run on generator power during the January 2026 cold snap even if they exceeded permitted emissions. That tension explains why data center health issues remain a live fight in 2026, with local rules varying by state.
Frequently Asked Questions About Data Center Health Issues in US 2026
What are the main data center health issues in the US in 2026?
Air pollution from power plants, diesel generators and gas turbines; chronic low-frequency noise; and concern about cancer risk. Most evidence is modeled, not measured in residents.
Do data centers cause cancer in 2026?
No study has shown it. Exhaust can contain cancer-linked chemicals such as formaldehyde, but direct evidence of cancer near US data centers is sparse. Studies near newer sites may need years to show effects.
How many deaths could data center pollution cause by 2030?
UC Riverside and Caltech project 1,300 premature deaths a year by 2030, within a range of 940 to 1,590. These are modeled estimates.
How much electricity do US data centers use in 2026?
They used 4.4% of US electricity in 2023, or 176 TWh. Berkeley Lab projects 6.7% to 12% by 2028.
Are data center backup generators dangerous in 2026?
Diesel generators emit nitrogen oxides and particulates. Virginia auditors found actual emissions at 7% of the permitted maximum, but they calculated a worst case of 9,000 tons of nitrogen oxides.
What is happening with xAI turbines in Memphis and Southaven in 2026?
The Southern Environmental Law Center and NAACP sued in April 2026 over 27 turbines in Southaven, alleging they ran without a permit. The Memphis site has a permit for 15 turbines.
Is the Boxtown cancer risk caused by xAI in 2026?
No evidence says so. The 4 times national average figure describes risk that existed before xAI arrived.
How loud are data centers in 2026?
Server halls reach up to 96 dB inside. Neighbors report a low-frequency hum at homes, and some sites sit near the 55 dB local limits in places such as Loudoun County.
Can data center noise harm your health in 2026?
Excess environmental noise is linked to high blood pressure and poor sleep. Researchers say data on data centers specifically does not yet exist.
How much water do US data centers use in 2026?
Direct use reached 66 billion liters in 2023, up from 21.2 billion in 2014, according to Berkeley Lab.
Who is most affected by data center pollution in 2026?
Researchers find that costs fall hardest on disadvantaged communities, where per-household health burdens run several times the national average in some counties.
Is there an official US ban on diesel generators at data centers in 2026?
No national ban exists. States set permit limits, and Virginia lawmakers debated requiring cleaner Tier IV units for new permits.
Disclaimer: The data research report we present here is based on information found from various sources. We are not liable for any financial loss, errors, or damages of any kind that may result from the use of the information herein. We acknowledge that though we try to report accurately, we cannot verify the absolute facts of everything that has been represented.
