Company lists · Data refreshed September 2026

Top 25 Water distribution companies based in the United States

Name: Water distribution companies based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 474 companies tracked

RevenueBase identified 474 water distribution companies headquartered in the United States as of September 2026 and tracks 22,007 professional contacts across them, including 9,179 with verified work emails. Houston is the largest hub.

This list covers water distribution companies headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 19, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 19, 2026 86% judged on-target in blind review

474Companies

22,007Contacts tracked

9,179Verified emails

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The 25 largest water distribution companies based in the United States

Ranked by team size

Top 25 of 474 water distribution companies based in the United States, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to water distribution companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	American Water	Partial evidence	Camden, NJ, United StatesHQ checked Sep 19, 2026	5,001-10,000	2,876 contacts →
	Partial evidence “American Water (NYSE: AWK) is the largest regulated water and wastewater utility company in the United States.” Source: RevenueBase Database · checked Sep 19, 2026
2	Core & Main	Indirect evidence	St. Louis, MO, United StatesHQ checked Sep 19, 2026	1,001-5,000	2,165 contacts →
	Indirect evidence “Based in St.” Source: RevenueBase Database · checked Sep 19, 2026
3	AQUA	Partial evidence	Bryn Mawr, PA, United StatesHQ checked Sep 19, 2026	1,001-5,000	1,478 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 19, 2026
4	EBMUD	Partial evidence	Oakland, CA, United StatesHQ checked Sep 19, 2026	1,001-5,000	1,434 contacts →
	Partial evidence “East Bay Municipal Utility District is a California public utility that supplies high-quality drinking water, generates renewable energy and provides wastewater treatment and…” Source: RevenueBase Database · checked Sep 19, 2026
5	Wssc Water	Partial evidence	Laurel, MD, United StatesHQ checked Sep 19, 2026	1,001-5,000	1,288 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 19, 2026
6	Inframark	Partial evidence	Horsham, PA, United StatesHQ checked Sep 19, 2026	1,001-5,000	973 contacts →
	Partial evidence “As an Azuria owned company, Inframark is a widely recognized leader in Water Infrastructure Operations and Infrastructure Management Services.” Source: RevenueBase Database · checked Sep 19, 2026
7	Louisville Water Company	Partial evidence	Louisville, KY, United StatesHQ checked Sep 19, 2026	201-500	413 contacts →
	Partial evidence “Every day, nearly one million people depend on Louisville Water Company to provide safe, high-quality drinking water.” Source: RevenueBase Database · checked Sep 19, 2026
8	Inland Empire Utilities Agency	Partial evidence	Chino, CA, United StatesHQ checked Sep 19, 2026	201-500	330 contacts →
	Partial evidence “The Inland Empire Utilities Agency (IEUA) is a municipal water district that supplies imported and recycled water; collects and treats wastewater; and provides other utility…” Source: RevenueBase Database · checked Sep 19, 2026
9	Aquarion Water Company	Partial evidence	Bridgeport, CT, United StatesHQ checked Sep 19, 2026	201-500	308 contacts →
	Partial evidence “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.” Source: RevenueBase Database · checked Sep 19, 2026
10	SAN Diego County Water Authority	Partial evidence	San Diego, CA, United StatesHQ checked Sep 19, 2026	201-500	265 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 19, 2026
11	Toho Water Authority	Partial evidence	Kissimmee, FL, United StatesHQ checked Sep 19, 2026	501-1,000	256 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 19, 2026
12	Lafayette Utilities System	Indirect evidence	Lafayette, LA, United StatesHQ checked Sep 19, 2026	501-1,000	174 contacts →
	Indirect evidence “For more than 125 years, LUS has been a community partner committed to enhancing quality of life through reliable service, competitive pricing and safety.” Source: RevenueBase Database · checked Sep 19, 2026
13	Middlesex Water Company	Partial evidence	Iselin, NJ, United StatesHQ checked Sep 19, 2026	201-500	156 contacts →
	Partial evidence “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.” Source: RevenueBase Database · checked Sep 19, 2026
14	City Of Deland	Indirect evidence	De Land, FL, United StatesHQ checked Sep 19, 2026	201-500	149 contacts →
	Indirect evidence “The City of DeLand Utilities/Public Services Department and its associated engineering and facilities maintenance divisions is to provide the citizens of the greater DeLand area…” Source: RevenueBase Database · checked Sep 19, 2026
15	Greenville Water	Partial evidence	Greenville, SC, United StatesHQ checked Sep 19, 2026	201-500	143 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 19, 2026
16	Tampa BAY Water	Partial evidence	Clearwater, FL, United StatesHQ checked Sep 19, 2026	51-200	138 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 19, 2026
17	UOSA	Partial evidence	Leesburg, VA, United StatesHQ checked Sep 19, 2026	51-200	130 contacts →
	Partial evidence “Water Reclamation Plant” Source: RevenueBase Database · checked Sep 19, 2026
18	DES Moines Water Works	Partial evidence	Des Moines, IA, United StatesHQ checked Sep 19, 2026	201-500	114 contacts →
	Partial evidence “Water plays a crucial role in your health and safety, and Des Moines Water Works (DMWW) plays a key role in providing you with a safe, clean, and reliable water supply.” Source: RevenueBase Database · checked Sep 19, 2026
19	Connecticut Water	Partial evidence	Clinton, CT, United StatesHQ checked Sep 19, 2026	201-500	101 contacts →
	Partial evidence “Connecticut Water is a regulated public water utility that is committed to providing high-quality water and world-class service to families and communities while being good…” Source: RevenueBase Database · checked Sep 19, 2026
20	Moulton Niguel Water District	Partial evidence	Laguna Hills, CA, United StatesHQ checked Sep 19, 2026	51-200	101 contacts →
	Partial evidence “Moulton Niguel Water District provides high-quality drinking water, recycled water and wastewater treatment services to customers in Aliso Viejo, Laguna Niguel, Laguna Hills…” Source: RevenueBase Database · checked Sep 19, 2026
21	Lehigh County Authority	Partial evidence	Allentown, PA, United StatesHQ checked Sep 19, 2026	51-200	93 contacts →
	Partial evidence “Lehigh County Authority (LCA) is a public water and wastewater utility committed to providing unparalleled service to residents and businesses in all our service areas.” Source: RevenueBase Database · checked Sep 19, 2026
22	Cobb County-Marietta Water Authority	Partial evidence	Marietta, GA, United StatesHQ checked Sep 19, 2026	51-200	92 contacts →
	Partial evidence “The Cobb County-Marietta Water Authority (CCMWA) is a regional public utility that provides potable (drinking and fire protection) water on a wholesale basis to 11 retail water…” Source: RevenueBase Database · checked Sep 19, 2026
23	Dalton Utilities	Partial evidence	Dalton, United StatesHQ checked Sep 19, 2026	201-500	91 contacts →
	Partial evidence “Dalton Utilities has operated as a public utility since 1889, and provides potable water, electrical, natural gas and wastewater treatment services to the City of Dalton and…” Source: RevenueBase Database · checked Sep 19, 2026
24	USG Water Solutions	Strong evidence	Atlanta, GA, United StatesHQ checked Sep 19, 2026	501-1,000	87 contacts →
	Strong evidence “USG Water Solutions is the leading water utility services provider specializing in storage tanks, plant rehabilitation, metering, and distribution systems.” Source: RevenueBase Database · checked Sep 19, 2026
25	Sweetwater Authority	Partial evidence	Chula Vista, CA, United StatesHQ checked Sep 19, 2026	51-200	86 contacts →
	Partial evidence “Sweetwater Authority (Authority) is a publicly owned water agency with policies and procedures established by a seven-member Board of Directors.” Source: RevenueBase Database · checked Sep 19, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: water distribution companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names water distribution companies.
Partial evidence: Its own public description names part of water distribution companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name water distribution companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 474 water distribution companies based in the United States

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Water distribution companies based in the United States at a glance

As of Sep 19, 2026

41.7%Verified-email coverage

46.4Average contacts per company

11-50Median size (employees)

0.8%Largest-city concentration · Houston

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

199

11-50

112

51-200

100

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 474 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among water distribution companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in the United States whose own description of what they do matches “water distribution companies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names water distribution companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among water distribution companies, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 9,179 across the full list. 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.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names water distribution companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

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

RevenueBase identified 474 water distribution companies headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

American Water, headquartered in Camden, tops this list with the largest team on record.

Which city has the most water distribution companies?

Houston leads with 4 headquartered companies, followed by York (4) and Camarillo (3).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 9,179 verified decision-maker contacts tracked across these 474 companies.

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 Smart Search, 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.