6.2.7Segment

Water & Wastewater Utilities

Water and wastewater utilities treating and distributing potable water and collecting and treating sewage.

4
Verticals

Overview

Water & Wastewater Utilities covers the supply of drinking water and the treatment of wastewater. The investor-owned segment (~$19B in Census-tracked revenue) is led by water majors (American Water, Essential Utilities/Aqua, California Water), but the vast majority of U.S. water service is provided by thousands of municipal systems largely outside this figure.

Demand and investment are driven by aging water infrastructure, regulatory mandates (lead-pipe replacement, PFAS treatment), and the renewal of underinvested systems. The defining trend is consolidation — investor-owned utilities acquiring small, struggling municipal systems that cannot fund needed upgrades. It is a stable, regulated, and actively consolidating segment.

Market snapshot

Market size
~$19B
Growth
~7.1%CAGR (2017–22, nominal)
Companies
~5,000
FragmentationConsolidating

U.S. Census Bureau 2022 CBP/Economic Census, NAICS 221310 (water supply & irrigation) + 221320 (sewage treatment) — largely investor-owned; most U.S. water service is municipal and outside this figure.

Business model & economics

Revenue model
Regulated rate-base returns on water/wastewater service
Recurring revenue
High — recurring, non-discretionary water service
EBITDA margin
Stable, regulated returns
Capex intensity
High
  • Investor-owned leaders (American Water, Essential, Cal Water).
  • Aging infrastructure, lead-pipe, and PFAS mandates.
  • Consolidation of struggling municipal systems.

M&A deal context

High deal activity

Who’s acquiring

Investor-owned water utilitiesInfrastructure funds & investorsMunicipal-system consolidators

What’s driving deals

  • Roll-up of small municipal water systems.
  • Lead-pipe, PFAS, and infrastructure-renewal capex.
  • Rate-base growth and regulated returns.

Verticals in this segment

  • 6.2.7.1Investor-Owned Water Companies

    Regulated private water utilities serving residential and commercial customers.

  • 6.2.7.2Municipal Water Systems

    Publicly-owned water utilities providing potable water service.

  • 6.2.7.3Regional Water Authorities

    Multi-jurisdictional water authorities managing regional water supply.

  • 6.2.7.4Water Utility Management Services

    Private operators managing publicly-owned water utilities.

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