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Clear out junk files and repair common Windows errorsFree Scan →Scan for outdated or missing drivers - takes under a minuteDriver Scan →Data centers can affect nearby communities, but there is no universal bill increase, water-use figure, or noise outcome. The effects depend on the local utility and rate rules, the facility’s cooling and sound-control design, available water and power infrastructure, and how the site is approved. A center pays for its electricity under its service arrangement; households may be affected indirectly if system costs are shared through utility rates.
Can a data center make household electricity bills go up?
Potentially, but not simply because a data center uses electricity. A large new load can lead utilities to invest in power generation, transmission, and other capacity. Those costs are recovered under approved rates and customer arrangements, so the effect on other customers depends on rate design, which costs are assigned to the project, whether demand arrives before new supply, and how accurately demand was forecast.
The U.S. Department of Energy’s Office of Policy identifies fair allocation of system costs to large-load customers, the risk of infrastructure becoming stranded if demand fails to materialize, resource adequacy, and supply options as key rate-design issues in its January 17, 2025 brief, Electricity Rate Designs for Large Loads: Evolving Practices and Opportunities.
What Virginia’s forecast does—and does not—say
Virginia’s Joint Legislative Audit and Review Commission (JLARC) found that existing rates appropriately allocate current costs to the customers responsible, including data centers. It also warned that additional infrastructure and tighter supply as demand grows could raise costs across the system. JLARC forecast that a typical Dominion Energy residential customer could face an additional $14–$37 per month in generation- and transmission-related costs by 2040, in constant dollars. This is a Virginia-specific forecast, not an observed bill increase or a national estimate.
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Who pays for local power infrastructure?
Fairfax County says residents do not directly pay for the electricity consumed by data centers, but may pay a portion of energy-infrastructure improvements needed to support demand. The county also notes that electricity rates depend on usage and customer class, and that Virginia’s State Corporation Commission reviews utility rates. The county says state regulators—not the county—control utility rates and transmission.
How much water does a data center use?
There is no useful single “gallons per data center” figure without knowing the facility, time period, cooling system, and whether the number refers to water withdrawn or consumed. JLARC says use varies with facility size, computing density, and cooling method. In Virginia, most data centers use about as much water as or less than an average large office building; some use substantially more, while others use less than a typical household. Most obtain water from local utilities. Virginia regulates large withdrawals, but JLARC found less oversight of how available water is shared among local uses.
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What Fairfax County’s figures show
Fairfax County says exact data-center water-use information for the county has been kept private, limiting precise local accounting. The county cites a regional estimate of less than 100,000 gallons per day for data centers across the Potomac River basin—not Fairfax County alone—and says that amount is less than 0.1% of the cited upstream total on a consumptive-use basis. It also reports that around 40% of regional data centers use air cooling.
A 2026 Virginia law is scheduled to require water companies to report total industry use starting January 1, 2027. Fairfax County expects more detailed information after the requirement takes effect. The county’s figures provide regional context, not a measurement of a specific facility or a complete local inventory.
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Why cooling design and location matter
Water impact depends not only on a facility’s demand but also on where its water comes from, local scarcity, competing users, and how much water the cooling system consumes. Air cooling and other designs can change the balance between water and energy use, so a proposal should be assessed with its own peak and annual water needs rather than a generic industry average.
As a separate, attributed example, Andrew Charlton MP said in a 2026 Australian government speech that Australian data centers used an estimated seven gigalitres of cooling water in 2024–25, about 0.04% of total Australian industrial water consumption. He also said closed-loop designs use up to ten times less water than open-loop predecessors and are 5–15% more energy efficient. These are figures and performance claims made in that speech, not universal measurements for data centers elsewhere.
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Can a data center near a home be noisy?
It can be, though not every site creates a neighborhood noise problem. JLARC reports that the sound can be continuous and low-frequency, and that some nearby residents say it affects their well-being. It also found that a large majority of data centers do not generate noise complaints, often because of their location or design.
Conventional noise ordinances may focus on short, loud events and fail to address persistent low-frequency sound well. JLARC identifies sound modeling before construction and zoning limits that use appropriate low-frequency measures as possible ways to address that gap.
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What local review can address
Fairfax County says it requires noise studies for data-center development in relevant cases and uses zoning, siting distances, visual screening, design rules, and public hearings to manage impacts. The exact process depends on the site and zoning district. For a resident tracking a concern, a meter capable of recording low-frequency sound can help create approximate personal records; those readings do not establish a code violation or replace calibrated professional monitoring.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.What to check when a data center is proposed nearby
Local effects cannot be ranked with a universal rule: the electricity, water, and noise questions depend on different infrastructure and site conditions. For a specific proposal, ask for the records and conditions that make those impacts assessable:
- Electricity: Utility filings and rate schedules, projected load, plans for generation and transmission, and any project-specific infrastructure or cost-allocation agreements.
- Water: Cooling design, water source, peak demand, annual consumption, and how use will be disclosed and monitored.
- Noise: Acoustic studies that address low-frequency sound, expected nighttime operation, and the limits or mitigation measures that would be enforceable.
- Local approval: Applicable zoning and permits, site plans, public-hearing dates, and any conditions imposed through review.
What communities may gain—and where benefits accrue
JLARC’s 2025 Virginia review estimated that the state’s data-center industry contributed 74,000 jobs, $5.5 billion in labor income, and $9.1 billion in annual GDP. The review said most of the benefits were associated with construction, that ongoing employment is smaller than in some industries, and that economic benefits are concentrated geographically. These are Virginia-specific estimates, not a forecast of what any one project will deliver to its host community.
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