Georgia water and environmental permits for AI data centers

In short

Georgia does not require a state water withdrawal permit for an AI data center that connects to a municipal water system. That is the single most important rule to understand, and it means most planned AI data centers in Georgia are not applying for any EPD water withdrawal permit. The state’s permit trigger is a withdrawal of more than 100,000 gallons per day of surface water on a monthly average, or more than 100,000 gallons per day of groundwater (on a monthly average for farm use). O.C.G.A. § 12-5-31, Ga. Comp. R. & Regs. R. 391-3-2-.03. When an AI data center draws water from a city or county system, it is treated as an ordinary customer with no separate state review of how much water it uses. That exemption is a central feature of Georgia’s regulatory scheme.

Separately, AI data center projects may need permits for stormwater runoff under an industrial general permit, water quality certifications for wetland and stream impacts, and local zoning and use approvals. Many Georgia counties and cities have imposed moratoria or adopted ordinances that directly restrict water use for cooling, require closed loop systems, or ban data centers altogether. The state’s Developments of Regional Impact process now requires disclosure of water and power demands for qualifying data centers, but the DRI findings are advisory only.

What water withdrawal permits does Georgia require for an AI data center?

Georgia law requires a permit from the Environmental Protection Division before a person may withdraw, divert, or impound more than 100,000 gallons per day of surface water on a monthly average. O.C.G.A. § 12-5-31. The same daily volume threshold applies to groundwater withdrawals, except that the farm use threshold uses a monthly average and the general industrial threshold applies to any withdrawal over 100,000 gallons per day. Ga. Comp. R. & Regs. R. 391-3-2-.03. No withdrawal may begin before a permit is granted. Ga. Comp. R. & Regs. R. 391-3-2-.04.

An AI data center that plans to pump water directly from a river or a reservoir must submit an application that includes a water conservation plan, a drought contingency plan, and environmental criteria addressing watershed protection and reservoir management. EPD. The EPD issues separate permits for agricultural use and for municipal or industrial use. EPD. For municipal and industrial surface water withdrawals, the contact is Johmar Haye. For municipal and industrial groundwater withdrawals, it is Bill Frechette. EPD

The permit requirement attaches only when the AI data center itself is the withdrawer. If the AI data center taps into a city or county water system, the city or county holds the withdrawal permit, not the AI data center. The AI data center is just a customer.

In practice, none of the 30 AI data center projects planned in the Ocmulgee River basin had applied for a state water withdrawal permit as of March 2026. Macon Telegraph. Most are expected to rely on municipal water supplies.

How does the municipal water rule shape AI data center development?

The municipal water rule creates a wide path for AI data centers to secure large volumes of water without going through a state permitting process. EPD has confirmed that it does not have a role in deciding which customers a municipal water provider may serve. AI data centers are treated like any other customer of the municipal water system providing that service. Macon Telegraph. That means a developer can negotiate directly with a local water authority for millions of gallons per day, and the state will not review that allocation.

A municipal water system itself must have a withdrawal permit that protects in stream flows, but those safeguards apply to the utility’s total withdrawal, not to individual large users. There is no clear mechanism for requiring a single AI data center to reduce water use before other customers feel the pinch. Macon Telegraph. This gap has drawn attention as the scale of planned data centers has become visible.

For example, Project Sail in Coweta County would use an estimated 6 million gallons per day, making it the largest customer of the Coweta County Water and Sewerage Authority. That authority currently supplies about 10.5 million gallons per day. The Newnan Times-Herald. In Butts County, the River Park project would draw more than 4.5 million gallons per day, over three times the county’s current water usage. Georgia Recorder. These numbers dwarf the Middle Ocmulgee Regional Water Plan’s allocation of only 4 million gallons per day in new industrial water use through the year 2060. Macon Telegraph.

The rule also affects drought response. A municipal system may face curtailments during drought, but the system manager, not the state, decides which customers bear the reduction. As of this writing, no Georgia county has imposed a drought curtailment specifically on an AI data center, and the state’s April 2026 Level 1 drought response called only for voluntary conservation rather than mandatory cutbacks.

What other environmental permits apply to an AI data center in Georgia?

An AI data center under construction or operation triggers several standard environmental permits that are not unique to data centers but are commonly required.

Stormwater. An AI data center with industrial activities exposed to stormwater must obtain coverage under the NPDES Industrial Storm Water General Permit, known as GAR050000. The permit is administered by EPD and covers operating industrial facilities with outdoor equipment or materials. The current permit is effective from June 1, 2022 through May 31, 2027. EPD. An industrial facility may submit a Notice of Intent for coverage, or certify a No Exposure Exclusion if no industrial materials are exposed. Quarterly monitoring data is reported through the NetDMR system, and an annual report is due by January 31 each year. Notice of Intent, No Exposure Exclusion, Notice of Termination, and Annual Report forms must be submitted through the Georgia EPD Online System, or GEOS. EPD. For a large AI data center campus built in phases, stormwater compliance should be built into the site plan from the start.

Wetlands and streams. Any project that requires a federal permit from the U.S. Army Corps of Engineers under Section 404 of the Clean Water Act, because it will fill wetlands or alter streams, must also obtain a Section 401 water quality certification from EPD. The certification confirms that the discharge will not violate Georgia’s water quality standards. The SDC ATLA Data Center in Douglas County, for example, applied for a 401 certification in October 2025 for impacts to 0.583 acres of wetlands and over 5,000 linear feet of streams, proposing to buy stream and wetland mitigation credits. Ga. EPD Public Notice SAS-2025-00336. Any AI data center sited on undeveloped land in Georgia where streams or wetlands are present should expect to need this certification.

Wastewater and chemical discharges. When an AI data center discharges chemically treated water, whether from cooling system blowdown or decommissioning, through a point source to surface waters, it must hold a wastewater discharge permit from EPD or comply with local pretreatment rules if discharging to a municipal sewer system. DeKalb County Watershed Management, Georgia EPD NPDES permits, Georgia EPD industrial pretreatment. The same rules apply to any industrial discharge.

What is the DRI process and how does it apply to AI data centers?

A Development of Regional Impact, or DRI, is a state review process run by the Department of Community Affairs. It looks at whether a large development would have effects that spread beyond the local jurisdiction. The DRI review is advisory. It cannot deny a project, but it forces the developer to submit impact reports and gives neighboring jurisdictions and regional planning councils a chance to comment. Final land use decisions remain with the local government.

In November 2025, the DCA adopted a new DRI category called Technological Facility (Including Data Centers). Within the Atlanta Regional Commission’s territory the DRI size threshold for AI data centers is 300,000 square feet in urban or suburban areas and 500,000 square feet in rural areas. Outside the Atlanta region the threshold is 500,000 square feet statewide. Georgia Recorder. An AI data center that meets that floor must file a DRI application and disclose projected water usage, electrical infrastructure demands, and traffic impacts. The DCA paused all DRI reviews for AI data centers from about July 2025 until the new rules were adopted on November 20, 2025, the first time the agency ever paused an entire development type from the process. GovTech / AJC, AJC

The DRI process is currently the closest thing Georgia has to a statewide AI data center siting review for water. The 16 AI data center projects in the Ocmulgee basin that disclosed water usage did so through the DRI process. Macon Telegraph. However, because the findings are advisory, a project can proceed over regional objections. The DRI process creates public information and political accountability, but it does not add a regulatory veto.

What does the Data Center Transparency Act (SB 421) do?

SB 421, known as the Data Center Transparency Act, was introduced in the Georgia General Assembly during the 2025-2026 session. SB 421 was read and referred to the Senate State and Local Governmental Operations Committee on January 27, 2026, and never advanced further, dying when the session ended on April 2, 2026. legis.ga.gov, BillTrack50. SB 421, introduced in the 2025-2026 session, would have amended Title 36, Chapter 80 to prohibit any local government, authority, or political subdivision from entering into a nondisclosure agreement that conceals an entity’s electricity or water usage. The bill was read and referred to the Senate State and Local Governmental Operations Committee and has not been enacted. legis.ga.gov, legis.ga.gov.

The bill was introduced by Senator RaShaun Kemp (D-Atlanta) with bipartisan support after a public records request for water usage documents in Georgia came back heavily redacted. MultiState, Georgia Senate Press Office, GA SB 421. The bill would not have created a new statewide reporting requirement for AI data center water or power use. It would simply have stripped away confidentiality clauses that local governments and companies might have used to keep those numbers secret. As a result, if a project had gone through a local approval process that involved a contract, the water and electricity numbers would have become public.

SB 421 would have been a transparency measure, not a regulatory cap. The bill would not have limited how much water an AI data center may use, nor would it have required EPD or the Public Service Commission to collect usage data. It would have addressed the secrecy problem but would have left the underlying water permitting structure unchanged.

How are local governments regulating AI data center water use?

In the absence of a state law that limits or reviews municipal water sales to AI data centers, local governments have become the most active regulatory layer. The following table summarizes key local actions as of May 2026.

Local ordinances are being tested in court. In Coweta County, the rezoning for Project Sail was approved 3-2 in April 2026 despite compliance with the county’s new AI data center ordinance. Seventeen residents filed a lawsuit on May 5, 2026, challenging the approval. The Citizen, CBS Atlanta. The case is pending.

The local response shows that while the state’s water permitting framework has not changed, communities are using zoning and land use powers to impose conditions that directly address water consumption and cooling technology. For developers, the local government is now the primary gatekeeper for water related conditions on an AI data center that uses municipal water.

What is the water supply context for AI data centers in Georgia?

The number of AI data centers proposed in Georgia has grown sharply. Thirty AI data center projects are planned just in the Ocmulgee River basin. Only 16 have disclosed water usage figures through the DRI process. Those 16 project a combined withdrawal of 12 million gallons per day, of which more than 9 million gallons per day would be consumptively lost and not returned to the basin. Macon Telegraph. The Middle Ocmulgee Regional Water Plan, last updated in 2023, allocates only 4 million gallons per day in new industrial water use through 2060. A single large AI data center can use that entire allocation in one day. Macon Telegraph.

The Chattahoochee River Basin holds approximately 100 data centers, mostly in Cobb, Douglas, and Fulton counties. Georgia EPD. Statewide, at least 25 new AI data center proposals filed since 2024 would require more than 5.2 billion gallons of water per year. 11Alive. Environment Georgia estimated that built and proposed AI data centers would pull 68.5 million gallons per day from Georgia rivers that would not be returned, based on typical evaporative cooling losses. Environment Georgia.

Water supply projections are complicated by Plant Scherer, a coal fired plant near Juliette that draws 72 million gallons per day from the Ocmulgee. The 2023 regional water plan assumed Plant Scherer would retire Unit 3 by 2028, freeing water for growth. But Georgia Power’s 2025 Integrated Resource Plan proposes keeping Unit 3 running until at least 2035. EPD’s Veronica Craw told the Middle Ocmulgee Water Planning Council that this change may mean that rebalancing no longer holds. Macon Telegraph. Adding Plant Scherer’s continued operation and planned AI data center withdrawals, total Ocmulgee basin withdrawals could climb to roughly 364 million gallons per day, up from 280 million under the 2023 plan. The river ran below that higher volume on 81 days in the year before March 2026. Macon Telegraph.

Georgia EPD declared Drought Response Level 1 around April 27, 2026. Chattahoochee Riverkeeper. The state does not publish an official estimate of what share of statewide water withdrawals is attributable to AI data centers, nor does any state agency require AI data center operators to report water demand. Chattahoochee Riverkeeper. That gap is part of what makes the regulatory structure described above so consequential.

Key takeaways

• An AI data center that connects to a municipal water system does not need a state water withdrawal permit. It is treated as an ordinary customer, no matter how much water it uses.
• A direct withdrawal from a surface water source or from a well over 100,000 gallons per day on a monthly average does require an EPD permit. As of early 2026, no Ocmulgee basin AI data center had applied for one.
• Construction projects must handle stormwater through the NPDES Industrial Storm Water General Permit (or a No Exposure Exclusion) and may need a Section 401 water quality certification if they impact wetlands or streams.
• The DRI process now applies to AI data centers above 300,000 square feet in urban or suburban areas within the Atlanta Regional Commission’s territory, or 500,000 square feet anywhere else in Georgia. It forces disclosure of water and power usage but is advisory only.
• SB 421 would have banned local governments from using NDAs to hide AI data center water or electricity usage. It would not have created a statewide reporting requirement or a usage cap.
• Local governments are the main front for water related regulation. Many have passed moratoria or ordinances that require closed loop cooling, limit discharge temperature, or ban AI data centers entirely.
• The water volumes projected for AI data centers in the Ocmulgee and Chattahoochee basins far exceed regional plan allocations. The regulatory structure, with its municipal water exemption, means that water allocation decisions currently happen largely through private negotiations between developers and local water authorities, not through state permitting.

Frequently asked questions

Q:Do I need an EPD permit to withdraw water for an AI data center in Georgia?

A:Only if the project plans to draw water directly from a surface source or a well. A connection to a city or county water system does not require a state withdrawal permit. O.C.G.A. § 12-5-31, O.C.G.A. § 12-5-96, Macon Telegraph

Q:What is the volume threshold for a surface water withdrawal permit?

A:More than 100,000 gallons per day on a monthly average. O.C.G.A. § 12-5-31

Q:Does the Data Center Transparency Act require water usage reporting?

A:No. SB 421 would have prohibited local governments from signing nondisclosure agreements that hide water or electricity usage. It would not have created a new reporting mandate. legis.ga.gov

Q:What triggers a DRI review for an AI data center?

A:An AI data center that exceeds 300,000 square feet in an urban or suburban area within the Atlanta Regional Commission’s territory, or 500,000 square feet anywhere else in Georgia, must go through the DRI process. The review is advisory only. Georgia Recorder

Q:Can a local government ban AI data centers?

A:Yes. Several Georgia localities have banned AI data centers in specific zones, like Atlanta’s Beltline overlay, or citywide, as Fayetteville did. Local zoning authority gives them that power.

Q:Is there a state law requiring closed loop cooling for AI data centers?

A:No. Some local ordinances require closed loop cooling, like Jones County’s, but state law does not impose a cooling technology mandate. GPB

Q:What is a Section 401 water quality certification, and when is it needed?

A:It is a state certification from EPD that a project’s discharge into wetlands or streams complies with Georgia water quality standards. It is required when a project needs a federal Section 404 permit for filling wetlands or altering streams. EPD

Q:How much water does a typical AI data center use in Georgia?

A:Usage varies widely by size and cooling technology. Among the 16 disclosed Ocmulgee basin projects, the average is about 0.75 million gallons per day per project. In the Chattahoochee basin, Project Sail in Coweta County is estimated at 6 million gallons per day. Chattahoochee Riverkeeper

Q:Are there any water supply limits that could affect AI data centers?

A:Yes, regional water plans cap new industrial allocations. The Middle Ocmulgee plan, for example, allows only 4 million gallons per day in new industrial use through 2060, yet planned AI data centers alone would exceed that many times over. It is unclear whether drought conditions would trigger local or state restrictions on AI data centers. Macon Telegraph

Q:Does an AI data center need a permit to discharge cooling water?

A:If the discharge goes through a point source to surface water, a wastewater discharge permit from EPD is required. If the discharge goes to a municipal sewer system, it must comply with pretreatment standards and requirements administered by the local POTW if it has an EPD-approved pretreatment program or by EPD directly. Georgia EPD Individual NPDES Permits, Georgia EPD Industrial Pretreatment

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Junde Liu, JD, LL.M. (Taxation) candidate at UF Law. Originally published on Compute Law Blog. This article is general information and does not constitute legal advice. Reading it does not create an attorney client relationship. The reader should not act on the basis of any content here without first consulting a licensed attorney in the relevant state. Last reviewed for accuracy May 23, 2026.