Company lists · Data refreshed September 2026

Top 25 Water filtration equipment suppliers based in the United States

Name: Water filtration equipment suppliers based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 22, 2026 1,298 companies tracked

RevenueBase identified 1,298 water filtration equipment suppliers headquartered in the United States as of September 2026 and tracks 13,214 professional contacts across them, including 3,411 with verified work emails. Houston is the largest hub.

This list covers water filtration equipment suppliers 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 22, 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 22, 2026 86% judged on-target in blind review

1,298Companies

13,214Contacts tracked

3,411Verified emails

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The 25 largest water filtration equipment suppliers based in the United States

Ranked by team size

Top 25 of 1,298 water filtration equipment suppliers based in the United States, ranked by team size, largest first. Data refreshed Sep 22, 2026. RevenueBase Smart Search rates how each company's information relates to water filtration equipment suppliers: 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	Culligan International	Partial evidence	Rosemont, IL, United StatesHQ checked Sep 22, 2026	10001+	1,830 contacts →
	Partial evidence “There’s nothing more fundamental to life on Earth than water.” Source: RevenueBase Database · checked Sep 22, 2026
2	Culligan Water	Partial evidence	Jacksonville, FL, United StatesHQ checked Sep 22, 2026	51-200	354 contacts →
	Partial evidence “At Culligan Water Conditioning of Jacksonville FL, we not only aim to provide better water to the community, we are also committed to building a better, more sustainable world.” Source: RevenueBase Database · checked Sep 22, 2026
3	Micronics, NOW A Part Of Cleanova	Partial evidence	Chattanooga, TN, United StatesHQ checked Sep 22, 2026	1,001-5,000	210 contacts →
	Partial evidence “We are a worldwide expert in Liquid-Solid Separation & Air Filtration and a leading provider of Filter Media, Filter Presses, Vacuum Filters, Baghouse products, and expert Field…” Source: RevenueBase Database · checked Sep 22, 2026
4	Graver Technologies, LLC	Partial evidence	Glasgow, DE, United StatesHQ checked Sep 22, 2026	201-500	184 contacts →
	Partial evidence “Graver Technologies, LLC serves the industrial filtration, separation and purification needs of companies around the globe.” Source: RevenueBase Database · checked Sep 22, 2026
5	KX Technologies	Partial evidence	West Haven, CT, United StatesHQ checked Sep 22, 2026	51-200	102 contacts →
	Partial evidence “KX Technologies is your Global Filtration Partner.” Source: RevenueBase Database · checked Sep 22, 2026
6	Oasis International	Partial evidence	Columbus, OH, United StatesHQ checked Sep 22, 2026	201-500	102 contacts →
	Partial evidence “OASIS International is a global leader in the design, manufacture and distribution of clean drinking water systems.” Source: RevenueBase Database · checked Sep 22, 2026
7	Avalon	Partial evidence	Lakewood, NJ, United StatesHQ checked Sep 22, 2026	11-50	97 contacts →
	Partial evidence “Avalon offers Perfect Water, Every Time by providing bottleless filtered water coolers that have been rigorously tested and are held up to the highest standards in the industry.” Source: RevenueBase Database · checked Sep 22, 2026
8	Pureflow, INC	Indirect evidence	Graham, NC, United StatesHQ checked Sep 22, 2026	51-200	94 contacts →
	Indirect evidence “Why Pureflow?” Source: RevenueBase Database · checked Sep 22, 2026
9	Total Water Treatment Systems INC	Indirect evidence	Madison, WI, United StatesHQ checked Sep 22, 2026	51-200	77 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 22, 2026
10	Fresh Water Systems	Strong evidence	Greenville, SC, United StatesHQ checked Sep 22, 2026	51-200	76 contacts →
	Strong evidence “Fresh Water Systems is a relationally-driven provider of filtration solutions that leverage expertise and intentionality to connect with conscientious businesses and consumers.” Source: RevenueBase Database · checked Sep 22, 2026
11	Lakos Filtration Solutions	Strong evidence	Fresno, CA, United StatesHQ checked Sep 22, 2026	51-200	73 contacts →
	Strong evidence “In 1972, LAKOS was founded on the belief that filtering water should be simple – both for the people who operate filtration equipment and the environment.” Source: RevenueBase Database · checked Sep 22, 2026
12	Paragon Water Systems INC	Strong evidence	Tampa, FL, United StatesHQ checked Sep 22, 2026	201-500	73 contacts →
	Strong evidence “Paragon Water Systems partners with appliance brands, foodservice operators, and industrial companies that require a reliable, scalable ODM/OEM water filtration manufacturer.” Source: RevenueBase Database · checked Sep 22, 2026
13	Clear Water Services	Partial evidence	Everett, WA, United StatesHQ checked Sep 22, 2026	51-200	72 contacts →
	Partial evidence “Clear Water Services provides innovative stormwater, groundwater, and process water solutions custom-designed for each client's unique goals, challenges, and mission.” Source: RevenueBase Database · checked Sep 22, 2026
14	Complete Filtration Resources, INC	Partial evidence	Marshfield, WI, United StatesHQ checked Sep 22, 2026	11-50	62 contacts →
	Partial evidence “We design and manufacture a full line of components for our membrane filtration & wastewater systems.Together with our fabrication and installation partners around the world we…” Source: RevenueBase Database · checked Sep 22, 2026
15	Marlo Incorporated	Strong evidence	Racine, WI, United StatesHQ checked Sep 22, 2026	51-200	62 contacts →
	Strong evidence “For 50 years, Marlo Incorporated has engineered and manufactured high quality water treatment equipment for a wide variety of residential, commercial, and industrial applications.” Source: RevenueBase Database · checked Sep 22, 2026
16	Wigen Water Technologies	Partial evidence	Minneapolis, MN, United StatesHQ checked Sep 22, 2026	51-200	62 contacts →
	Partial evidence “Founded in 1965, Wigen Water Technologies® is a global leader in the production of custom water treatment systems, specializing in cost-effective and reliable solutions for…” Source: RevenueBase Database · checked Sep 22, 2026
17	Puragain Water	Strong evidence	Escondido, CA, United StatesHQ checked Sep 22, 2026	11-50	62 contacts →
	Strong evidence “Puragain Water is a family owned business that takes pride in offering the very best in water filtration systems.” Source: RevenueBase Database · checked Sep 22, 2026
18	Kinetico Advanced Water Systems	Partial evidence	Garner, NC, United StatesHQ checked Sep 22, 2026	51-200	62 contacts →
	Partial evidence “Kinetico Advanced Water Systems helps you understand and fix your water issues through custom analysis and tailored solutions.” Source: RevenueBase Database · checked Sep 22, 2026
19	Ameriwater	Strong evidence	Dayton, OH, United StatesHQ checked Sep 22, 2026	51-200	59 contacts →
	Strong evidence “AmeriWater is the recognized specialist in the design, manufacturing, installation and supply of water treatment equipment and services.” Source: RevenueBase Database · checked Sep 22, 2026
20	Aquasana	Partial evidence	Austin, TX, United StatesHQ checked Sep 22, 2026	51-200	59 contacts →
	Partial evidence “At Aquasana we believe clean water and a healthy environment are the most important components to healthy living and overall well-being.” Source: RevenueBase Database · checked Sep 22, 2026
21	Pentair Water Pool And Spa, INC	Strong evidence	Sanford, NC, United StatesHQ checked Sep 22, 2026	51-200	56 contacts →
	Strong evidence “Whether in your backyard or large venues, Pentair’s solutions are engineered to filter, clean and sanitize water to its purest and cleanest state, while automation equipment makes…” Source: RevenueBase Database · checked Sep 22, 2026
22	National Trade Supply	Indirect evidence	Greenwood, IN, United StatesHQ checked Sep 22, 2026	51-200	55 contacts →
	Indirect evidence “DiscountFilters.com is the flagship site of National Trade Supply, a leading e-commerce company in the home improvement industry.” Source: RevenueBase Database · checked Sep 22, 2026
23	Rosedale Products, INC	Indirect evidence	Ann Arbor, MI, United StatesHQ checked Sep 22, 2026	51-200	54 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 22, 2026
24	The U.S. Water Culligan Group	Indirect evidence	Wheeling, IL, United StatesHQ checked Sep 22, 2026	201-500	53 contacts →
	Indirect evidence “The U.S.” Source: RevenueBase Database · checked Sep 22, 2026
25	Charger Water Treatment Products	Partial evidence	Morton Grove, IL, United StatesHQ checked Sep 22, 2026	51-200	51 contacts →
	Partial evidence “No matter what your water problem, Charger Water Treatment Products has a solution.” Source: RevenueBase Database · checked Sep 22, 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 filtration equipment suppliers. 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 filtration equipment suppliers.
Partial evidence: Its own public description names part of water filtration equipment suppliers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name water filtration equipment suppliers. 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 1,298 water filtration equipment suppliers based in the United States

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Water filtration equipment suppliers based in the United States at a glance

As of Sep 22, 2026

25.8%Verified-email coverage

10.2Average contacts per company

1-10Median size (employees)

1.5%Largest-city concentration · Houston

Sep 22, 2026Page data refreshed

Companies by employee count

1-10

644

11-50

475

51-200

123

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 1,298 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 filtration equipment suppliers, 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 filtration equipment suppliers”. 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 filtration equipment suppliers), 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 filtration equipment suppliers, 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, 3,411 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 22, 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 filtration equipment suppliers, 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 filtration equipment suppliers are there based in the United States?

RevenueBase identified 1,298 water filtration equipment suppliers 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?

Culligan International, headquartered in Rosemont, tops this list with the largest team on record.

Which city has the most water filtration equipment suppliers?

Houston leads with 19 headquartered companies, followed by San Diego (12) and Jacksonville (11).

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 3,411 verified decision-maker contacts tracked across these 1,298 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 22, 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.