Top Water Security Market Players in World

The Water Security Growth-Share Matrix: Mapping the Sector's Ten Largest Players as AI-Driven Demand Reshapes the Industry

The global water security and infrastructure management market was worth approximately US$303.8 billion in 2026, and is projected to grow at a 6.7% CAGR to reach US$420.2 billion by 2031 — one of the most structurally durable investment themes in global infrastructure, driven by aging developed-market pipe and treatment networks, accelerating water stress in emerging economies, and rising regulatory demand for reliable access.

The sector's defining 2026 development is structural rather than cyclical: Veolia Environnement acquired full ownership of its Water Technologies segment, buying out minority partner CDPQ's remaining stake for €1.5 billion and consolidating what the company now describes as a global WaterTech business of approximately €5 billion in revenue. That move sits alongside a second, equally notable pattern across this year's earnings season — data center and AI infrastructure cooling demand has emerged as a genuine new growth vector for water technology companies, cited explicitly by Ecolab, Watts Water Technologies, Xylem, and Mueller Water Products alike, even as several of the same companies navigate short-term softness in legacy end markets like residential pool and single-family construction.

This briefing applies the growth-share framework to the ten companies named in the underlying report — Veolia Environnement, Xylem, Ecolab, Pentair, Danaher, IDEX, American Water Works, Itron, Mueller Water Products, and Watts Water Technologies — using only what each has disclosed in 2026 earnings releases, SEC/regulatory filings, and public investor communications.

Market Sizing Snapshot, 2026–2031

Source: Global Water Security & Infrastructure Management Market Strategic Research Report, Market Research Reports Inc.

The Growth-Share Lens, Applied to Water Security

Three distinct dynamics define competitive position across the ten majors profiled:

• Data center and AI-cooling-linked water technology — the sector's newest and fastest-growing demand category, where several companies are reporting triple-digit percentage growth off a small but rapidly scaling base.
• Regulated municipal utility infrastructure — a large, stable, rate-base-driven category where consolidation (rather than organic growth alone) is increasingly the primary scale lever.
• Legacy residential and construction-linked end markets — the category currently showing genuine near-term softness at more than one company, tied to broader housing and consumer capital-expenditure cycles rather than water-sector fundamentals specifically.

Company-by-Company Positioning

Veolia Environnement — the sector's largest player consolidating its highest-growth technology segment

Veolia reported H1 2026 revenue of €22.193 billion, up 0.8% at constant scope and forex, with EBITDA growing 5.0% to a margin of 16.0%. The period's defining move was completing full ownership of Water Technologies and Solutions by buying out CDPQ's remaining 30% stake for €1.5 billion — a segment the company now values at approximately €5 billion in annual revenue with leading worldwide positions, expected to unlock roughly €90 million in additional run-rate cost synergies by 2027. Veolia also completed the $3 billion acquisition of Clean Earth in the U.S., doubling hazardous waste revenues, while specifically citing strategic investment in data center and microelectronics water technologies as aligned with growing industry demand.

MRR Read: Veolia's now-wholly-owned Water Technologies segment is the clearest Star in this matrix — a company voluntarily paying a premium to take full operational control of its fastest-growing, technology-differentiated business line, rather than continuing to share its upside with a minority partner, is about as direct a signal of strategic conviction as public disclosure gets.

Xylem — the smart-water leader navigating short-term timing noise around a long-term data center opportunity

Xylem's Q2 2026 revenue reached $2.336 billion, up 2% year-over-year, with orders surging 42% and adjusted EBITDA margin hitting a record 23.3%. The company narrowed full-year organic revenue growth guidance to 2–3% specifically due to near-term electric metering project delays in its Measurement & Control Solutions segment, even as water metering orders grew double digits and the company's $5.3 billion total backlog remained robust. Most notably, Xylem's data center revenue is projected to increase approximately 200% in 2026, with CEO Matthew Pine stating that "water will play an increasingly strategic role in the AI ecosystem."

MRR Read: Xylem's core water infrastructure and smart metering franchise functions as a Cash Cow with reliable municipal demand, while its rapidly scaling data center water-technology business is a clear Star — the electric metering delays affecting near-term guidance are a project-timing issue within a specific product line, not a signal about the company's broader competitive position.

Ecolab — the water treatment specialist capturing outsized data center economics

Ecolab's Q2 2026 revenue reached $4.42 billion, up 10%, with the Global Water segment alone delivering $2.22 billion, also up 10%. The company's most consequential 2026 move was closing its CoolIT Systems acquisition on July 2, which management says allows Ecolab to capture 3x to 5x more revenue per data center compared to its legacy water-only cooling solutions — directly combining water treatment expertise with liquid-cooling hardware for AI infrastructure. Management raised full-year EPS guidance and highlighted High-Tech segment sales up 25%, spanning both microelectronics and data centers.

MRR Read: Ecolab's core Global Water treatment business is a Cash Cow, and the CoolIT acquisition is a deliberate, quantified move to convert that Cash Cow's customer relationships into a genuine Star — the explicit 3–5x revenue-per-data-center framing is among the clearest examples in this entire matrix of a company stating its own growth-share thesis in its own words.

Pentair — a company with one segment in genuine stress and two others posting record profitability

Pentair's Q2 2026 sales fell 17% to $933 million, driven almost entirely by a 42% decline in its Pool segment tied to $170 million of channel inventory destocking — a headwind the company has pre-announced and attributes to right-sizing distributor inventory rather than underlying demand weakness. Critically, Flow and Water Solutions delivered record return on sales in the same quarter, and Pentair reaffirmed full-year adjusted EPS guidance of $4.60–$4.80. The company also announced a $1.4 billion acquisition of Taco, extending its water-management platform into water circulation and hydronic flow control.

MRR Read: Pentair's Pool segment is, for now, a Dog — a genuine, disclosed sales decline in a specific product category, distinct from the rest of the company's performance — while Flow and Water Solutions is a Cash Cow delivering record profitability, and the Taco acquisition signals management's own confidence in expanding the Cash Cow rather than doubling down on the currently weak segment; management's own language describes the Pool weakness as temporary, positioning it for recovery in 2027.

Danaher — a name in this report whose core water-quality business now sits elsewhere

Danaher's Q2 2026 revenue grew 5.5% to $6.3 billion, with strong Life Sciences and Diagnostics performance and the early completion of its $9.8 billion Masimo acquisition. It is important to note for accuracy: Danaher spun off its Environmental & Applied Solutions segment — which included its water-quality analytics businesses such as Hach — into the standalone, separately-traded Veralto Corporation in 2023. As a result, the Danaher entity profiled in this report today operates primarily in life sciences and diagnostics, with its historical water-security asset base now residing in a different publicly traded company.

MRR Read: Given this structural separation, Danaher's current business has limited direct overlap with the water security value chain this report covers; readers specifically tracking water-quality monitoring and testing technology may find Veralto's disclosures more directly relevant to that segment than Danaher's own current reporting.

IDEX Corporation — the fluid-technology specialist finding its footing in municipal water analytics and high-purity semiconductor water

IDEX reported record Q2 2026 sales of $920.6 million, up 6.4%, with orders up 29% year-over-year. Within its Fluid & Metering Technologies segment, management specifically cited double-digit growth in its water platform, driven by municipal wastewater analytics and high-purity semiconductor fabrication water solutions — with the latter's recurring-revenue share now approaching 50% of that portfolio following the Mott acquisition. The company raised full-year organic growth guidance to 5–6%.

MRR Read: IDEX's water platform — spanning both municipal wastewater analytics and semiconductor-fab water purity — is a Star, benefiting from the same underlying AI-infrastructure buildout driving demand at Ecolab and Watts Water, applied here to the water-purity requirements of chip fabrication rather than data center cooling directly.

American Water Works — the regulated-utility Cash Cow now consolidating through M&A

American Water reported Q2 2026 adjusted EPS of $1.61, up 8.1%, with revenue of $1.36 billion, up 6.2%, driven by authorized rate increases and capital investment recovery. The company invested $1.8 billion in the first half toward a full-year $3.7 billion capital target, growing its regulated rate base from $24.3 billion to $25.3 billion, and completed the Nexus Water Group acquisition, adding roughly 47,000 customer connections. Most significantly, American Water's pending merger with Essential Utilities — approved so far in Kentucky, Ohio, and Virginia — remains on track to close by the end of Q1 2027.

MRR Read: American Water's core regulated business is a textbook Cash Cow — steady, rate-recoverable, government-regulated growth in the 7–9% range — and the pending Essential Utilities combination represents a direct, disclosed move to consolidate additional Cash Cow scale rather than chase a new growth category, consistent with a utility sector where scale and regulatory relationships are the primary competitive lever.

Itron — the smart infrastructure specialist converting project timing volatility into durable recurring revenue

Itron's Q2 2026 revenue declined 7.2% to $562.9 million, driven by the timing of Networked Solutions project deployments, but the company posted record gross margin of 41.4% and grew annual recurring revenue 21% to $417 million. Itron raised full-year non-GAAP EPS guidance to $6.30–$6.50 despite the revenue softness, and secured a notable water-specific win: New Zealand utility Watercare selected Itron for the country's largest smart water meter upgrade, replacing 100,000 mechanical meters in Auckland.

MRR Read: Itron's smart water and grid metering franchise is a Question Mark with Star-like underlying economics — the reported revenue decline reflects project-timing noise inherent in large, multiyear utility programs rather than weaker demand, and the 21% ARR growth alongside a marquee national-scale water deployment win both point toward the recurring, software-driven portion of the business becoming the more durable growth engine over time.

Mueller Water Products — the North American water infrastructure specialist posting records across the board

Mueller Water Products delivered a record fiscal Q3 2026, with net sales up 4.1% to $395.9 million and adjusted EBITDA up 24.3% to a record $107.4 million, expanding margin by 440 basis points to 27.1%. The company raised full-year adjusted EBITDA guidance for a third consecutive quarter and completed the exit of its i2O pressure monitoring business outside North America to Switzerland's GWF AG, sharpening its core North American water transmission, distribution, and measurement focus. Management specifically flagged industrial water applications for data centers as one of its fastest-growing specialty valve categories, albeit still a relatively small share of total revenue.

MRR Read: Mueller's core North American municipal water infrastructure franchise is a Cash Cow delivering genuinely record profitability quarter after quarter, while its emerging data center specialty valve business — small today but explicitly called out by management as a priority growth category — represents an early-stage Question Mark with a credible path toward Star status as that end market scales.

Watts Water Technologies — the plumbing and water-quality specialist where data center sales tripled

Watts Water delivered record Q2 2026 net sales of $763.2 million, up 19% (12% organic), with adjusted EPS up 18% to $3.66. The standout figure: data center sales tripled year-over-year and now represent 8% of total revenue for the first half of 2026, up from a much smaller base a year earlier, prompting management to double its estimate of the addressable data center market opportunity to $2 billion, driven by global expansion and the trend toward liquid cooling. The company raised full-year organic sales guidance to 8–11%, even as management acknowledged continued softness in single-family residential and multifamily construction end markets.

MRR Read: Watts Water's data center-linked plumbing, heating, and water-quality product lines are the clearest volume-growth Star in this matrix by percentage terms — a tripling of segment sales in a single year is a rare, unambiguous growth signal — while the company's legacy residential and light-commercial base functions as a more moderate Cash Cow currently facing genuine, disclosed construction-market softness.

Consolidated Growth-Share Matrix — Water Security & Infrastructure, 2026

The matrix's most useful pattern: data center and AI infrastructure cooling demand is not confined to one company's strategy but is independently emerging as a growth vector across at least five of the ten profiled players — Veolia, Ecolab, Xylem, IDEX, and Watts Water each cited it specifically in 2026 disclosures, with figures ranging from Watts Water's tripled segment sales to Ecolab's quantified 3–5x revenue-per-site economics. This level of independent cross-company convergence on the same emerging category is a meaningfully stronger signal than any single company's claim in isolation.

Strategic Imperatives for 2026–2031

1. Data center and AI infrastructure water demand has moved from anecdote to disclosed, quantified growth driver. With five of ten profiled companies independently citing this category in 2026 earnings, water technology suppliers positioned to serve both cooling hardware and water treatment simultaneously — as Ecolab's CoolIT acquisition demonstrates — appear best placed to capture disproportionate value per site.
2. Full ownership and consolidation are increasingly preferred to partnership structures for capturing growth-segment upside. Veolia's CDPQ buyout and American Water's pending Essential Utilities merger both represent the same underlying logic applied to different market structures: paying to consolidate full control of a high-value segment or scale position rather than sharing its economics.
3. Legacy end-market softness is being treated as temporary and specific, not systemic. Pentair's Pool destocking and residential construction softness at Watts Water and Mueller are each described by respective managements as end-market-specific and cyclical, distinct from the broader structural water-infrastructure investment thesis — a distinction borne out by those same companies' overall EPS and margin guidance continuing to rise even as individual segments face headwinds.
4. Recurring, software-driven revenue is becoming the preferred lens for evaluating smart water and metering franchises. Itron's emphasis on 21% ARR growth despite headline revenue softness, and Xylem's continued backlog strength despite metering project delays, both suggest investors and management alike are increasingly looking past quarter-to-quarter project timing toward the durability of recurring, data-driven revenue streams.

Outlook

With the underlying market forecast to grow at a steady 6.7% CAGR toward $420.2 billion by 2031, and every one of the ten profiled companies reporting either record results, raised guidance, or a clearly explained temporary headwind in 2026, the water security sector presents an unusually consistent picture of structural demand resilience. The central strategic question for 2026–2031 is which companies convert the newly emerging data center and AI-infrastructure water opportunity into durable, differentiated share fastest. On the disclosed evidence, Ecolab's CoolIT acquisition and Watts Water's tripled data center segment sales represent the most quantifiably advanced positions today, while Veolia's full WaterTech consolidation signals where the sector's largest player is placing its own long-term conviction.

This analysis draws on company-reported earnings releases, investor presentations, and public regulatory filings from Veolia Environnement, Xylem Inc., Ecolab Inc., Pentair plc, Danaher Corporation, IDEX Corporation, American Water Works, Itron Inc., Mueller Water Products, and Watts Water Technologies, current through September 2026, together with the market-sizing framework of the Global Water Security & Infrastructure Management Market Strategic Research Report.