Company lists · Data refreshed September 2026

Top 25 Water supply companies based in the United States

RevenueBase identified 1,185 company matches for water supply companies associated with the United States as of September 2026 and tracks 34,043 professional contacts across them, including 13,692 with verified work emails. Houston is the largest hub.

This list covers company matches for water supply companies associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 19, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase SmartSearch · Exact Recorded Sep 19, 2026 How this list was built
1,185Companies
34,043Contacts tracked
13,692Verified emails
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The 25 largest water supply companies based in the United States

Ranked by team size
Top 25 of 1,185 company matches for water supply companies based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 19, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchCamden, NJ, United StatesHQ recorded Sep 19, 20265,001-10,0002,876 contacts →

Exact match

“American Water (NYSE: AWK) is the largest regulated water and wastewater utility company in the United States.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
2Exact matchSt. Louis, MO, United StatesHQ recorded Sep 19, 20261,001-5,0002,165 contacts →

Exact match

“Based in St.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
3Exact matchRosemont, IL, United StatesHQ recorded Sep 19, 202610001+1,830 contacts →

Exact match

“There’s nothing more fundamental to life on Earth than water.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
4Exact matchBryn Mawr, PA, United StatesHQ recorded Sep 19, 20261,001-5,0001,478 contacts →

Exact match

“Aqua is one of the largest U.S-based, publicly traded water and wastewater utilities, serving more than 3 million people in Illinois, Indiana, New Jersey, North Carolina…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
5Exact matchOakland, CA, United StatesHQ recorded Sep 19, 20261,001-5,0001,434 contacts →

Exact match

“East Bay Municipal Utility District is a California public utility that supplies high-quality drinking water, generates renewable energy and provides wastewater treatment and…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
6Exact matchLaurel, MD, United StatesHQ recorded Sep 19, 20261,001-5,0001,288 contacts →

Exact match

“Established in 1918, WSSC Water is currently among the largest water and wastewater utilities in the nation, with a network of nearly miles of drinking water pipeline and over…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
7Exact matchHorsham, PA, United StatesHQ recorded Sep 19, 20261,001-5,000973 contacts →

Exact match

“As an Azuria owned company, Inframark is a widely recognized leader in Water Infrastructure Operations and Infrastructure Management Services.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
8Exact matchLouisville, KY, United StatesHQ recorded Sep 19, 2026201-500413 contacts →

Exact match

“Every day, nearly one million people depend on Louisville Water Company to provide safe, high-quality drinking water.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
9Exact matchFort Lauderdale, FL, United StatesHQ recorded Sep 19, 202651-200317 contacts →

Exact match

“Parkson Corporation is a supplier of innovative, cost effective solutions for potable water, process water, and industrial and municipal wastewater treatment.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
10Exact matchBridgeport, CT, United StatesHQ recorded Sep 19, 2026201-500308 contacts →

Exact match

“Aquarion Water Company is the public water supply and wastewater treatment company for more than people in 73 cities and towns in Connecticut, Massachusetts and New Hampshire.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
11Exact matchSan Diego, CA, United StatesHQ recorded Sep 19, 2026201-500265 contacts →

Exact match

“The San Diego County Water Authority sustains a $262 billion regional economy and the quality of life for 3.3 million residents through a multi-decade water supply diversification…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
12Exact matchKissimmee, FL, United StatesHQ recorded Sep 19, 2026501-1,000256 contacts →

Exact match

“Toho Water Authority was established in 2003 by a special act of the Florida legislature and provides a full range of water, wastewater and reclaimed water services to its…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
13Exact matchWaukegan, IL, United StatesHQ recorded Sep 19, 20265,001-10,000241 contacts →

Exact match

“Rely on USABlueBook for everything you need for water and wastewater operations and maintenance.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
14Exact matchMorrow, GA, United StatesHQ recorded Sep 19, 2026201-500229 contacts →

Exact match

“Clayton County Water Authority (CCWA) is located in metropolitan Atlanta and provides water, sewer and stormwater services to more than people through accounts.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
15Exact matchBoise, ID, United StatesHQ recorded Sep 19, 2026201-500226 contacts →

Exact match

“Water is a powerful and precious resource that deserves responsible management.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
16Exact matchWarrenville, IL, United StatesHQ recorded Sep 19, 202651-200197 contacts →

Exact match

“Phigenics is a leading provider of safe, smart, and superior water management programs aligned with ANSI/ASHRAE Standard 188 and Centers for Medicare & Medicaid Services (CMS) QSO…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
17Exact matchMinneapolis, MN, United StatesHQ recorded Sep 19, 2026201-500195 contacts →

Exact match

“Formed in 2017 following the consolidation of independent water treatment solution providers Emefcy and RWL Water, Fluence Corporation was established with the vision of becoming…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
18Exact matchGardiner, ME, United StatesHQ recorded Sep 19, 2026201-500176 contacts →

Exact match

“Everett J.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
19Exact matchLafayette, LA, United StatesHQ recorded Sep 19, 2026501-1,000174 contacts →

Exact match

“For more than 125 years, LUS has been a community partner committed to enhancing quality of life through reliable service, competitive pricing and safety.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
20Exact matchIselin, NJ, United StatesHQ recorded Sep 19, 2026201-500156 contacts →

Exact match

“Middlesex Water Company (NASDAQ:MSEX) provides a full range of regulated and non-regulated water, wastewater utility and related services primarily in New Jersey and Delaware.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
21Exact matchWest Palm Beach, FL, United StatesHQ recorded Sep 19, 2026501-1,000151 contacts →

Exact match

“The third largest water utility department in the State of Florida, the Palm Beach County Water Utilities Department (PBCWUD) provides drinking water, wastewater collection and…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
22Exact matchSelinsgrove, PA, United StatesHQ recorded Sep 19, 2026201-500147 contacts →

Exact match

“100% Employee Owned LB Water has been providing quality water and wastewater solutions for decades.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
23Exact matchGreenville, SC, United StatesHQ recorded Sep 19, 2026201-500143 contacts →

Exact match

“Greenville Water is the largest water utility in South Carolina, delivering clean, reliable drinking water to more than residents across Greenville and parts of Anderson, Pickens…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
24Exact matchClearwater, FL, United StatesHQ recorded Sep 19, 202651-200138 contacts →

Exact match

“As the largest wholesale drinking water supplier in the southeastern United States, Tampa Bay Water ultimately provides water to more than 2.5 million people in Hillsborough…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
25Exact matchOrleans, IN, United StatesHQ recorded Sep 19, 2026201-500136 contacts →

Exact match

“Reynolds Construction, LLC, is an employee owned, customer focused, performance driven, service company providing sustainable solutions to the water, wastewater, and renewable…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase

Showing 25 of 1,185 water supply companies based in the United States

See the full list, filter by size, metro and specialty, and access 13,692 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Water supply companies based in the United States at a glance

As of Sep 19, 2026
40.2%Verified-email coverage
28.7Average contacts per company
11-50Median size (employees)
1.1%Largest-city concentration · Houston
Sep 19, 2026Page data refreshed

Companies by employee count

1-10
512
11-50
368
51-200
200
201-500
54
501-1,000
22
1,001-5,000
17
5,001-10,000
3
10001+
4

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 1,185 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with the United States whose business descriptions match “water supply companies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
Ranking
Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification
Every displayed company carries at least one verified work email. RevenueBase tracks 13,692 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on September 19, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “water supply companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many water supply companies are there based in the United States?

RevenueBase identified 1,185 company matches for water supply companies associated with the United States as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

American Water tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most water supply companies?

Houston leads with 13 company records, followed by Phoenix (8) and Littleton (6).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 13,692 professional contacts with verified work emails tracked across these 1,185 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 19, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.