Source: S&P Capital IQ | Water, Wastewater & Environmental Sector
01/27/25: Aquarion Water Authority acquires Aquarion Water Company, Inc., a public water supply company serving over 700,000 people across New England. EV: $2.4B.
04/25/25: Hawkins, Inc. acquires assets of Surplus Management, Inc., a provider of sustainable water treatment solutions across the United States. EV: $204M (20.4x EBITDA).
06/09/25: Honeywell International Inc. acquires Sundyne LLC, a manufacturer of centrifugal pumps and compressors for industrial fluid handling applications. EV: $2.16B (14.5x EBITDA).
07/08/25: H2O America acquires Quadvest, L.P., a regulated water and wastewater utility serving the Houston metro area. EV: $484M.
10/27/25: American Water Works acquires Essential Utilities, Inc., an operator of regulated water, wastewater, and natural gas utilities across the U.S., creating a ~$63B combined entity. EV: $19.1B (14.3x EBITDA).
11/11/25: Parker-Hannifin Corporation acquires Filtration Group Corporation, a designer and manufacturer of filtration products with presence in Life Sciences, HVAC/R, and industrial markets. EV: $9.25B.
12/05/25: ITT Industries Holdings, Inc. acquires SPX FLOW, Inc., a portfolio company of Lone Star Funds and manufacturer of highly engineered industrial equipment and flow technologies. EV: $4.8B (16.1x EBITDA).
Water Demand from AI & Semiconductor Facilities Accelerates
Surging water demand from AI datacenters and semiconductor manufacturing facilities throughout 2025 supported stronger long-term forecasts and buoyed stock prices across the Components, System Solutions, and Water Utilities indices, even as broader market volatility persisted due to tariff uncertainty.
PFAS Regulation Drives Compliance Investment Across All Markets
Tightening PFAS mandates and emerging contaminant standards continue to generate durable compliance spending across municipal, industrial, residential, and commercial water treatment markets, creating a multi-year cycle of equipment upgrades, media replacement, and service contract growth.
Water Infrastructure Spending Outpaces Material Cost Increases
Water supply construction spending outpaced increases in construction materials costs throughout 2025, signaling real demand growth. The U.S. municipal water sector is entering a sustained infrastructure investment cycle driven by aging assets, federal funding support, and increasing utility reliance on private sector expertise.
Private Equity Consolidation Remains a Primary Demand Driver
PE-driven activity was dominated by smaller platform roll-ups. New Mountain Capital led financial buyers with 10 acquisitions through platforms Azuria Water Solutions and Consor; Sterling Investment Partners (6) and Sylmar Capital (4) were also active, reflecting sustained appetite for fragmented service businesses with recurring revenue and compliance-driven demand.
Tariff Uncertainty Weighs on Input Costs; Stainless Steel at Risk
The "Liberation Day" tariff announcement caused sharp stock price declines across the water sector in April 2025. Stainless steel prices — a critical input for water treatment equipment — remain threatened by ongoing tariff policy, adding cost uncertainty for equipment manufacturers and end buyers considering new system investments.
2022–2025 | Water, Wastewater & Environmental M&A Activity | Source: S&P Capital IQ
0 10 20 30 40 50 53 33 43 41 2022: 170 Deals Q1 Q2 Q3 Q4 51 40 40 50 2023: 181 Deals Q1 Q2 Q3 Q4 39 32 38 37 2024: 146 Deals Q1 Q2 Q3 Q4 47 43 32 37 2025: 159 Deals Q1 Q2 Q3 Q4 2022 2023 2024 2025
2025 Top Acquirers | Strategic: American Water (11), Atlas Copco (2), H2O America (2), Kemira (2), Voila (2), Watts (2) Financial: New Mountain Capital (10), Sterling Investment Partners (6), HLG Capital (4), Sylmar (4), Goldman Sachs (4), Littlejohn & Co. (3)
Source: S&P Capital IQ | Company disclosures | *Announced
Access the complete analysis — public company performance, EV/EBITDA valuation multiples, market driver deep-dives, the 2026 investment outlook, and the full water sector transaction dataset.
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