Company lists · Data refreshed September 2026

Top 25 Wastewater recycling companies based in the United States

Name: Wastewater recycling 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 22, 2026 870 companies tracked

RevenueBase identified 870 wastewater recycling companies headquartered in the United States as of September 2026 and tracks 19,123 professional contacts across them, including 6,999 with verified work emails. Houston is the largest hub.

This list covers wastewater recycling 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 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

870Companies

19,123Contacts tracked

6,999Verified emails

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The 25 largest wastewater recycling companies based in the United States

Ranked by team size

Top 25 of 870 wastewater recycling companies 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 wastewater recycling 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	Evoqua Water Technologies	Indirect evidence	Washington, DC, United StatesHQ checked Sep 22, 2026	10001+	2,639 contacts →
	Indirect evidence “Evoqua has now joined Xylem.” Source: RevenueBase Database · checked Sep 22, 2026
2	Aquatech	Indirect evidence	Canonsburg, PA, United StatesHQ checked Sep 22, 2026	501-1,000	903 contacts →
	Indirect evidence “Aquatech enables the world's most recognized companies to solve complex challenges in water reuse, desalination, minimal and zero liquid discharge, and critical minerals…” Source: RevenueBase Database · checked Sep 22, 2026
3	Gradiant	Indirect evidence	Woburn, MA, United StatesHQ checked Sep 22, 2026	1,001-5,000	813 contacts →
	Indirect evidence “Gradiant is a Different Kind of Water Company.” Source: RevenueBase Database · checked Sep 22, 2026
4	Westech Engineering	Partial evidence	Salt Lake City, UT, United StatesHQ checked Sep 22, 2026	501-1,000	554 contacts →
	Partial evidence “WesTech Engineering, LLC designs, engineers, and manufactures water and wastewater treatment process equipment for mineral, industrial, and municipal applications worldwide.” Source: RevenueBase Database · checked Sep 22, 2026
5	Liquid Environmental Solutions	Partial evidence	Irving, TX, United StatesHQ checked Sep 22, 2026	501-1,000	427 contacts →
	Partial evidence “Liquid Environmental Solutions - the largest, exclusively non-hazardous US wastewater collection and disposal company, is known for innovation and leadership in protecting…” Source: RevenueBase Database · checked Sep 22, 2026
6	Parkson Corporation	Partial evidence	Fort Lauderdale, FL, United StatesHQ checked Sep 22, 2026	51-200	317 contacts →
	Partial evidence “Parkson Corporation is a supplier of innovative, cost effective solutions for potable water, process water, and industrial and municipal wastewater treatment.” Source: RevenueBase Database · checked Sep 22, 2026
7	Infiltrator Water Technologies Decentralized Wastewater Treatment Solutions	Partial evidence	Old Saybrook, CT, United StatesHQ checked Sep 22, 2026	501-1,000	295 contacts →
	Partial evidence “Protecting the environment with innovative wastewater treatment solutions for over 35 years, Infiltrator is the leading manufacturer of onsite wastewater treatment products in…” Source: RevenueBase Database · checked Sep 22, 2026
8	Culligan By Waterco	Indirect evidence	Lombard, IL, United StatesHQ checked Sep 22, 2026	501-1,000	265 contacts →
	Indirect evidence “Culligan has over 80 years of experience in the design and distribution of water treatment systems for residential, commercial and industrial applications.” Source: RevenueBase Database · checked Sep 22, 2026
9	Toho Water Authority	Partial evidence	Kissimmee, FL, United StatesHQ checked Sep 22, 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 22, 2026
10	Valicor	Indirect evidence	Monroe, OH, United StatesHQ checked Sep 22, 2026	201-500	254 contacts →
	Indirect evidence “Valicor is a trusted partner for sustainable waste management solutions.” Source: RevenueBase Database · checked Sep 22, 2026
11	Huber Technology US	Indirect evidence	Denver, NC, United StatesHQ checked Sep 22, 2026	201-500	243 contacts →
	Indirect evidence “HUBER Technology, LLC, the U.S.” Source: RevenueBase Database · checked Sep 22, 2026
12	Aqua-Aerobic Systems, INC	Indirect evidence	Loves Park, IL, United StatesHQ checked Sep 22, 2026	51-200	207 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 22, 2026
13	Fluence Corporation	Indirect evidence	Minneapolis, MN, United StatesHQ checked Sep 22, 2026	201-500	195 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 22, 2026
14	Newterra	Partial evidence	Coraopolis, PA, United StatesHQ checked Sep 22, 2026	201-500	185 contacts →
	Partial evidence “Newterra designs, engineers, manufactures, and services environmental, water and wastewater treatment solutions that assure great performance, superb reliability, and the highest…” Source: RevenueBase Database · checked Sep 22, 2026
15	Smith & Loveless INC	Partial evidence	Lenexa, KS, United StatesHQ checked Sep 22, 2026	201-500	172 contacts →
	Partial evidence “S&L delivers long-lasting, reliable and easy-to-operate wastewater pumping and treatment systems for municipal, federal, and industrial-commercial applications.” Source: RevenueBase Database · checked Sep 22, 2026
16	Orenco Systems, INC	Partial evidence	Sutherlin, OR, United StatesHQ checked Sep 22, 2026	201-500	170 contacts →
	Partial evidence “Nobody wants to worry about whether their wastewater is contaminating nearby rivers, streams, and wells.” Source: RevenueBase Database · checked Sep 22, 2026
17	Palm Beach County Water Utilities Department	Partial evidence	West Palm Beach, FL, United StatesHQ checked Sep 22, 2026	501-1,000	151 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 22, 2026
18	Apex Water And Process	Indirect evidence	St Michael, MN, United StatesHQ checked Sep 22, 2026	201-500	143 contacts →
	Indirect evidence “Apex, a trusted leader in water and process management, delivers integrated solutions that empower agricultural, commercial, and industrial customers across the U.S.” Source: RevenueBase Database · checked Sep 22, 2026
19	Tomorrow Water	Partial evidence	Anaheim, CA, United StatesHQ checked Sep 22, 2026	51-200	133 contacts →
	Partial evidence “Tomorrow Water is an innovative environmental solutions company specializing in both wastewater and organic waste treatment.” Source: RevenueBase Database · checked Sep 22, 2026
20	Seven Seas Water Group	Partial evidence	Tampa, FL, United StatesHQ checked Sep 22, 2026	51-200	130 contacts →
	Partial evidence “Our priority is to provide safe, reliable, and cost-effective water and wastewater treatment solutions through our Water-as-a-Service® approach.” Source: RevenueBase Database · checked Sep 22, 2026
21	UOSA	Indirect evidence	Leesburg, VA, United StatesHQ checked Sep 22, 2026	51-200	130 contacts →
	Indirect evidence “Water Reclamation Plant” Source: RevenueBase Database · checked Sep 22, 2026
22	Avantech, LLC	Indirect evidence	Columbia, SC, United StatesHQ checked Sep 22, 2026	51-200	117 contacts →
	Indirect evidence “AVANTech, LLC is a comprehensive industrial water treatment solutions provider.” Source: RevenueBase Database · checked Sep 22, 2026
23	Komline	Indirect evidence	Peapack, NJ, United StatesHQ checked Sep 22, 2026	501-1,000	113 contacts →
	Indirect evidence “Komline is a global leader in advanced Separation Technologies, delivering innovative equipment that keeps industries running and communities thriving.” Source: RevenueBase Database · checked Sep 22, 2026
24	XRI	Partial evidence	Houston, TX, United StatesHQ checked Sep 22, 2026	201-500	98 contacts →
	Partial evidence “XRI is the leading full-cycle water management and produced water midstream company with advanced water treatment technologies and recycling frameworks.” Source: RevenueBase Database · checked Sep 22, 2026
25	World Water Works, INC	Partial evidence	Oklahoma City, OK, United StatesHQ checked Sep 22, 2026	51-200	97 contacts →
	Partial evidence “At World Water Works, we strive to provide industrial and municipal customers with proven and cost-effective wastewater treatment solutions that deliver superior effluent quality.” 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: wastewater recycling 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 wastewater recycling companies.
Partial evidence: Its own public description names part of wastewater recycling companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name wastewater recycling 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 870 wastewater recycling companies based in the United States

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Wastewater recycling companies based in the United States at a glance

As of Sep 22, 2026

36.6%Verified-email coverage

22.0Average contacts per company

11-50Median size (employees)

3.2%Largest-city concentration · Houston

Sep 22, 2026Page data refreshed

Companies by employee count

1-10

333

11-50

351

51-200

136

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 870 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 wastewater recycling 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 “wastewater recycling 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 wastewater recycling 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 wastewater recycling 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, 6,999 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.

Wastewater recycling companies by metro

Wastewater recycling companies in Houston28

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 wastewater recycling 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 wastewater recycling companies are there based in the United States?

RevenueBase identified 870 wastewater recycling 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?

Evoqua Water Technologies, headquartered in Washington, tops this list with the largest team on record.

Which city has the most wastewater recycling companies?

Houston leads with 28 headquartered companies, followed by Austin (10) and Tampa (10).

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 6,999 verified decision-maker contacts tracked across these 870 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.