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Water utilities

The 14 companies in this industry listed on the NYSE and Nasdaq are worth $72 bn combined; the largest are American Water Works (AWK), Companhia de Saneamento Básico de SP (Sabesp) (SBS) and Essential Utilities (WTRG). For each one: what it does, revenue, margin, free cash flow over the last five years and a score from 0 to 10.

Data as of October 2026

Open contest
14 companies value 72 bn revenue 19 bn margin 23.3% free cash flow 0.2 bn avg. score 3.9
AWK holds 37.1% of the group's value, 1.2x the runner-up
Rank Ticker Company Share Value Revenue Margin FCF 5 years FCF/px Yield What it does · why it is here
1 AWK American Water Works
United States · score 1.4
37% 27 bn 5.3 bn 21.4% -1.0 bn -3.9% 2.5% Regulated water and wastewater, the largest in the US sector · Largest listed US water and wastewater company; a sector consolidator
2 SBS Companhia de Saneamento Básico de SP (Sabesp)
Brazil · score 6.9
31% 22 bn 7.6 bn 22.2% 1.6 bn 7.5% 2.1% Water utilities and water supply in São Paulo · Largest water and sanitation company in the Americas, recently privatized
3 WTRG Essential Utilities
United States · score 2.6
16% 12 bn 2.6 bn 40.9% -1.1 bn -9.2% 5.6% Regulated water, wastewater and natural gas distribution · Water and natural gas; a consolidator of municipal systems
4 AWR AMERICAN STATES WATER CO
United States · score 4.2
5% 3.2 bn 0.7 bn 20.5% 0.0 bn 0.6% 2.4% Regulated water and utility services in California · California — revenue of $697m
5 CWT CALIFORNIA WATER SERVICE GROUP
United States · score 6.6
4% 2.8 bn 1.0 bn 13.3% 0.3 bn 11.6% 2.7% Regulated water utilities in California and neighboring states · California — revenue of $1bn
6 HTO H2O AMERICA
United States · score 5.6
3% 2.3 bn 0.8 bn 12.9% 0.3 bn 10.5% 2.8% Water utility holding company, owner of San Jose Water, founded in 1866 · California — revenue of $829m
7 MSEX MIDDLESEX WATER CO
United States · score 5.3
1% 1.0 bn 0.2 bn 23.3% 0.1 bn 5.8% 2.6% Water and wastewater utility in New Jersey and Delaware, since 1897 · New Jersey — revenue of $206m
8 YORW YORK WATER CO
United States · score 5.9
1% 0.5 bn 0.1 bn 28.5% 0.0 bn 6.8% 2.6% Oldest US water utility, in Pennsylvania · Pennsylvania — revenue of $83m
9 CWCO Consolidated Water Co. Ltd.
Cayman Islands · score 7.3
1% 0.4 bn 0.1 bn 12.7% 0.0 bn 6.8% 2.0% Reverse osmosis desalination in the Cayman Islands · Cayman Islands — revenue of $128m
10 ARTNA ARTESIAN RESOURCES CORP
United States · score 1.9
1% 0.3 bn 0.1 bn 20.2% -0.0 bn -5.3% 3.8% Water distribution in Delaware, Maryland and Pennsylvania · Delaware — revenue of $117m
11 PCYO PURE CYCLE CORP
United States · score 5.6
0% 0.3 bn 0.0 bn 43.7% 0.0 bn 2.9% — Water and wastewater, land development and home rentals · Colorado — revenue of $34m
12 CDZI CADIZ INC
United States · score 0.0
1% 0.3 bn 0.0 bn -311.0% -0.0 bn -9.2% 1.5% Water, land, pipelines and filtration in Southern California · California — revenue of $12m
13 GWRS Global Water Resources, Inc.
United States · score 1.5
0% 0.2 bn 0.1 bn 5.2% -0.0 bn -10.8% 3.8% Integrated water management in Arizona · Arizona — revenue of $60m
14 RAIN Rain Enhancement Technologies Holdco, Inc.
United States · score 0.5
0% 0.0 bn — — 0.0 bn -52.0% — Rain-inducing technology · Florida

Other industries in the same sector

What this is. A catalogue, not a guide. Every industry with stocks listed on the NYSE or NASDAQ, the companies contending for its leadership, what each one does according to its own annual report, and the balance sheet it filed with the SEC.

The score runs from 0 to 10 and compares each company with every other one in the almanac on cash generation, profitability, debt, dividends and consistency over the last five years. The higher it is, the better the company fares in that comparison. Curious how much each part weighs? Ask at the bottom of the page.

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