Ecolab Inc.

Ecolab Inc. is an American water, hygiene, and infection prevention company that provides cleaning, sanitizing, and water treatment solutions to customers in more than 170 countries across 40 industries, generating $16.1 billion in revenue in fiscal 2025. Founded in 1924 as a modest supplier of industrial cleaning compounds, Ecolab has evolved through a century of organic expansion and transformative acquisitions — most notably Nalco in 2011, Purolite in 2021, Ovivo Electronics in 2025, and CoolIT Systems in 2026 — into a diversified industrial compounder that touches roughly one-third of the world's food production and one-quarter of the power generated.

This is a story about a portfolio in transition. For decades Ecolab was defined by its core franchise in institutional warewashing and industrial water treatment — reliable, high-return businesses growing at the pace of the global economy. Over the past five years management has systematically layered on higher-growth, higher-margin businesses in life sciences, digital services, pest elimination, and now advanced computing infrastructure. Those growth engines — roughly 15% of sales in 2025 — are compounding at double-digit rates and pulling the entire portfolio toward a faster, more profitable mix. The question is whether the market fully credits this transformation, and at what point the growth engines become large enough to move the aggregate needle.

The file turns on a single analytical tension: Ecolab trades at roughly 23 times trailing EBITDA — a multiple that prices in steady execution but not heroics — for a business that appears to be on the cusp of structurally higher organic growth and margin expansion. The evidence from the Q2 2026 print and the CoolIT close suggests the transformation is real. But the multiple also embeds assumptions about the durability of industrial demand, the persistence of AI infrastructure spending, and management's ability to integrate a series of large acquisitions while delivering on a 20% operating margin target by 2027. Resolving that tension is what the rest of this file sets out to do.