Snapshot — the group at a glance

US data centers directly consumed roughly 450 million gallons of water per day in 2021 (EESI, from USGS methodology), mostly drawn from municipal drinking-water systems. With US data center power capacity crossing 50 GW in 2025 and projected to reach ~135 GW by 2030 (FERC, 451 Research), direct cooling-water demand is on a path to roughly double or triple over the same period. The three tickers here represent two different ways to own that water flow: regulated utilities that pipe the water to the site (AWK, WTRG), and a water-technology company that sells the pumps, treatment systems, and cooling loops inside the building (XYL). AWK and WTRG announced an all-stock merger in October 2025 (expected close Q1 2027), so two of the three tickers are converging into one ~$61B enterprise. est.

Hyperscalers draw 97% of their cooling water from municipal drinking-water systems (Bluefield). A single 100 MW facility uses ~0.5 million gallons/day; a 300 MW campus uses 1-5 MGD. est. Northern Virginia data centers consumed nearly 2 billion gallons in 2023, up 63% from 2019 (EESI). At current build rates (25 GW under construction in the Americas est.), the industry would need roughly 700-1,200 MGD of direct cooling water by 2030 est. — and municipal utilities with pipe in the ground are the existing delivery mechanism.

The product & how money is made

The product is treated municipal water delivered to data center cooling systems, plus the pumps, heat exchangers, and treatment equipment inside those systems. Two distinct businesses touch the same molecule:

Regulated water utilities (AWK, WTRG)

These companies own pipes, treatment plants, and distribution networks. They deliver potable water to homes, businesses, and increasingly data centers under state-regulated tariff structures. Money comes in as a regulated return on invested capital ("rate base") — they spend money building infrastructure, regulators approve a return (typically 9-11% on equity), and that return shows up as the water bill. A data center customer paying for 2 MGD of water service adds to rate base and earns the allowed return, economically identical to serving a small town. Revenue growth comes from (a) rate cases (asking regulators for price increases), (b) infrastructure surcharges, and (c) acquiring smaller water systems.

AWK (American Water Works) is the largest US regulated water utility — 14 million people across 14 states. FY2025 revenue was $5.14B, net income $1.11B, capex $3.2B. WTRG (Essential Utilities, formerly Aqua America, old ticker WTR) serves 5.5 million people across 9 states, with FY2025 revenue of $2.47B. WTRG also runs a regulated natural gas distribution business ($1.12B of that revenue).

Water technology (XYL)

Xylem sells the equipment that moves, treats, and manages water. For data centers: pumps and circulators for cooling loops (Bell & Gossett brand), heat exchangers, water treatment systems (via acquired Evoqua, a $7.5B deal closed 2023), and digital monitoring/analytics (Xylem Vue). Revenue comes from equipment sales and aftermarket services. FY2025 revenue was $9.04B across four segments: Water Infrastructure ($2.64B), Applied Water ($1.85B), Measurement & Control ($2.09B), and Water Solutions & Services ($2.46B). No segment isolates data-center revenue; it is embedded across Applied Water and Water Solutions.

AWK 10-K FY2025 (filed Feb 2026); WTRG 10-K FY2025; XYL 10-K FY2025 (filed Feb 2026).

Demand — how much the world will want this

Contracted / committed

• WTRG — Greene County, PA: $26M investment to deliver 18 MGD to International Electric Power's 1,400-acre data center campus with ~1,000 MW of gas/battery generation. contracted This single project equals ~0.3% of WTRG's current daily water deliveries. est.
• AWK — Northern Virginia / Mid-Atlantic: AWK serves data center corridors in Virginia, New Jersey, and Pennsylvania but does not break out DC-specific contracted volumes in its filings. not disclosed
• Loudoun Water (not publicly traded): delivers over 800 million gallons/year of reclaimed water to Virginia data centers. contracted

Forecast demand growth

• US data centers directly consumed an estimated 450 MGD in 2021 (EESI/USGS). With power capacity roughly doubling from 50 GW (2025) to ~135 GW (2030), and assuming similar water intensity per MW, direct cooling demand would reach ~900-1,200 MGD by 2030. est.
• Bluefield Research projects cumulative US data-center water-related capex and opex of $4.1B through 2030, reaching $797M/year by 2030 (a 31.4% increase from current levels). est.
• Hyperscale operators account for 51.4% of total DC water demand; their water withdrawals are projected at 150.4 billion gallons cumulatively from 2025-2030 (Bluefield). That is ~82 MGD average over the period. est.
• Virginia data centers alone already use 2% of Potomac basin flows, projected to reach 33% by 2050 (Mordor Intelligence). est.
• Mordor Intelligence sizes the US DC water consumption market at 0.98 trillion liters (259B gallons, or ~710 MGD) in 2025, growing to 1.44 trillion liters (~1,040 MGD) by 2030 at an 8% CAGR. est.

EESI (2024 article citing USGS 2021 data); Bluefield Research (Jun 2025); Mordor Intelligence (2025); WTRG press release (Aug 2025, Greene County).

Supply — how much can be made, and what limits it

Existing capacity

• Municipal water systems supply 97%+ of data center cooling water (Bluefield). The US has ~50,000 community water systems, but data center demand concentrates in a handful of corridors: Northern Virginia (300+ DCs, ~900M gallons/year in Loudoun County alone), Dallas-Fort Worth, Phoenix, New Jersey, and increasingly Pennsylvania.
• AWK's footprint covers key DC states: New Jersey, Virginia, Pennsylvania, Indiana, Missouri. WTRG covers Pennsylvania and surrounding Mid-Atlantic states. The merged AWK+WTRG entity would be the dominant regulated water utility in the DC-dense Mid-Atlantic corridor.
• Total US municipal water production is roughly 42 billion gallons per day (EPA). DC direct cooling at ~450-710 MGD (depending on estimate vintage) is ~1-1.7% of total municipal supply — small nationally but concentrated locally. est.

Bottlenecks

• Local water rights are geographically fixed. Water cannot be piped from the Great Lakes to Arizona. Data centers must locate where water AND power co-exist, or adopt water-free cooling (dry coolers, closed-loop) at higher cost.
• Municipal utility capacity expansion is slow. New water treatment plants take 3-5 years to permit and build. Distribution main extensions require right-of-way, permits, and rate-case approval to recover costs. est.
• Political sensitivity is rising. Google's water withdrawals in The Dalles, Oregon consumed 25%+ of city supply in 2023 (Bluefield). Northern Virginia's 63% increase in DC water use from 2019-2023 generated pushback. Municipalities are beginning to impose metering mandates and water-conservation conditions on DC permits.
• Liquid cooling shifts demand, not eliminates it. NVIDIA's Blackwell platform claims 300x better water efficiency than air-cooled systems by enabling dry-cooler rejection (NVIDIA blog, 2025). But liquid cooling still needs water for makeup, treatment, and some heat rejection in hot climates. Bluefield projects liquid cooling in 50% of new builds by 2030 (vs. 33% today est.), which reduces per-MW water intensity but does not zero it out while total MW triples.

Bluefield Research (Jun 2025); EESI (2024); EPA municipal water statistics; NVIDIA Blackwell blog (2025); Mordor Intelligence (2025).

The gap — demand vs supply

Water demand grows more slowly than power demand because liquid cooling reduces water intensity per MW. The gap between power-capacity tripling (+170%) and water demand growing ~47% reflects the efficiency gains from the shift away from evaporative cooling towers. In absolute gallons, demand still rises ~330 MGD — equivalent to adding a city of ~2 million people to the municipal water system. est.

Pricing mechanism: Municipal water rates are set by regulators, not markets. Utilities recover costs plus allowed return. Data centers pay the same industrial tariff as any large customer. Money flows through rate base growth (more pipe in the ground raises allowed revenue), not through price per gallon increasing. LA's Tier 1 industrial rate was $8.13 per 100 cubic feet in 2024. For equipment vendors like XYL, pricing comes from product mix shift (higher-value liquid cooling systems vs. commodity pumps) and the Evoqua treatment portfolio.

Mordor Intelligence (2025, 0.98T to 1.44T liters); Bluefield Research (2025, $797M); FERC/451 Research (50 GW to 135 GW).

The players — who captures the money

AWK + WTRG merger: All-stock deal announced Oct 2025, shareholders of both companies approved Feb 2026. WTRG holders receive 0.305 AWK shares per share. Expected close Q1 2027, pending state utility commission approvals. Combined entity: ~19.5 million people served, 14+ states, ~$7.6B combined revenue, ~$61B combined enterprise value. Post-merger ownership: AWK shareholders ~69%, WTRG shareholders ~31%.

Not in this group: Ecolab (ECL, $65B market cap) acquired CoolIT Systems in 2025 for data center liquid cooling — a direct competitor to XYL in the DC water-treatment and cooling space, but primarily a chemicals company. Pentair (PNR, $14B) sells filtration and flow control for industrial cooling. Neither is in the ticker list but both compete for the same DC water dollar. est.

Stock prices and market caps as of Jun 2, 2026 (stockanalysis.com). Revenue/earnings from FY2025 10-K filings. Merger terms from AWK/WTRG press release (Oct 2025).

The price of exposure

None of the three companies disclose data-center-specific revenue. The following table shows what each whole business costs today:

Exposure dilution: AWK at $42.1B enterprise value includes 14 million residential and commercial customers whose water demand has nothing to do with AI. DC water exposure is embedded inside a much larger regulated business. AWK and WTRG carry heavy debt ($15.5B and $8.1B respectively) because regulated utilities finance infrastructure with debt backed by regulated returns. XYL has minimal net debt ($1.3B). In a rising-rate environment, the utilities' cost of capital rises and compresses equity returns; XYL's balance sheet is largely unaffected.

Prices: stockanalysis.com, Jun 2 2026. Financials: FY2025 10-K filings. Guidance: AWK and WTRG earnings releases (Feb 2026); XYL Q4 2025 earnings (Feb 2026).

What to deep-dive next

• AWK 10-K: Search for DC-specific customer disclosures, rate-case filings in Virginia and New Jersey that mention data center demand, and whether the $3.2B annual capex program includes DC-adjacent infrastructure.
• WTRG Greene County project: Track the 18 MGD commitment — is it a template for future DC water contracts? What does $26M capex for 18 MGD imply about the regulated return on DC water infrastructure?
• AWK/WTRG merger regulatory approvals: Which state PUCs have approved vs. pending? Conditions imposed? Timeline risk to Q1 2027 close.
• XYL DC product suite: Monitor whether the late-2025 launch translates to measurable segment growth in FY2026. Compare to Ecolab/CoolIT competitive positioning.
• Liquid cooling adoption curve: Track the shift from evaporative to closed-loop and direct-to-chip cooling. If adoption is faster than the 33% to 50% forecast by 2030, water demand per MW falls faster.
• Water rights conflicts: Monitor municipal pushback in Virginia (Loudoun County), Oregon (The Dalles), and Arizona (Phoenix metro).

Sources & confidence

Key uncertainty: No company in this group discloses data-center-specific revenue, volume, or customer counts. Demand-side numbers for DC water consumption vary by 50%+ between sources (EESI: ~450 MGD in 2021; Mordor: ~710 MGD in 2025; these may measure different things — direct vs. total, withdrawal vs. consumption). All forward projections depend on both DC build rates and the pace of liquid cooling adoption, which work in opposite directions on water demand per MW.