Company lists · Data refreshed September 2026

Top 25 Oil and gas wastewater treatment companies based in the United States

Name: Oil and gas wastewater treatment 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 17, 2026 547 companies tracked

RevenueBase identified 547 oil and gas wastewater treatment companies headquartered in the United States as of September 2026 and tracks 17,294 professional contacts across them, including 5,107 with verified work emails. Houston is the largest hub.

This list covers oil and gas wastewater treatment 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 17, 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 17, 2026 86% judged on-target in blind review

547Companies

17,294Contacts tracked

5,107Verified emails

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The 25 largest oil and gas wastewater treatment companies based in the United States

Ranked by team size

Top 25 of 547 oil and gas wastewater treatment companies based in the United States, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to oil and gas wastewater treatment 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	Select Water Solutions	Strong evidence	Gainesville, TX, United StatesHQ checked Sep 17, 2026	1,001-5,000	1,605 contacts →
	Strong evidence “Select is a leader in water management and chemical technology to our customers in the oil and gas industry, as well as in other industrial applications.” Source: RevenueBase Database · checked Sep 17, 2026
2	Chemtreat	Indirect evidence	Glen Allen, VA, United StatesHQ checked Sep 17, 2026	1,001-5,000	1,404 contacts →
	Indirect evidence “At ChemTreat, we understand that water is a vital resource for our planet.” Source: RevenueBase Database · checked Sep 17, 2026
3	PMI	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 17, 2026	n/a	1,308 contacts →
	Indirect evidence “Training and Development Solutions” Source: RevenueBase Database · checked Sep 17, 2026
4	Gradiant	Indirect evidence	Woburn, MA, United StatesHQ checked Sep 17, 2026	1,001-5,000	813 contacts →
	Indirect evidence “Gradiant is a Different Kind of Water Company.” Source: RevenueBase Database · checked Sep 17, 2026
5	Cetco Energy Services	Strong evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	501-1,000	499 contacts →
	Strong evidence “CETCO Energy Services (CETCO) specializes in treating complex fluids for offshore oil and gas operators.” Source: RevenueBase Database · checked Sep 17, 2026
6	Liquid Environmental Solutions	Partial evidence	Irving, TX, United StatesHQ checked Sep 17, 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 17, 2026
7	Infiltrator Water Technologies Decentralized Wastewater Treatment Solutions	Strong evidence	Old Saybrook, CT, United StatesHQ checked Sep 17, 2026	501-1,000	295 contacts →
	Strong 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 17, 2026
8	Ironclad Environmental Solutions	Indirect evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	201-500	263 contacts →
	Indirect evidence “Ironclad Environmental Solutions is the leading provider of custom waste management solutions, supported by the largest national fleet of innovative, top-quality specialty assets.” Source: RevenueBase Database · checked Sep 17, 2026
9	Valicor	Indirect evidence	Monroe, OH, United StatesHQ checked Sep 17, 2026	201-500	254 contacts →
	Indirect evidence “Valicor is a trusted partner for sustainable waste management solutions.” Source: RevenueBase Database · checked Sep 17, 2026
10	Aegis Chemical Solutions	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	201-500	230 contacts →
	Partial evidence “Aegis Chemical Solutions provides high-quality chemical treatment and technical services for oilfield applications.” Source: RevenueBase Database · checked Sep 17, 2026
11	Stage 3 Separation	Indirect evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	201-500	205 contacts →
	Indirect evidence “Stage 3 Separation is North America’s leading service provider for fluid conservation, solids control and waste mitigation.” Source: RevenueBase Database · checked Sep 17, 2026
12	BOS Solutions	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	201-500	196 contacts →
	Partial evidence “BOS Solutions (BOS) is a full service provider of solutions for drilling fluids treatment and recovery.” Source: RevenueBase Database · checked Sep 17, 2026
13	Fluence Corporation	Partial evidence	Minneapolis, MN, United StatesHQ checked Sep 17, 2026	201-500	195 contacts →
	Partial 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 17, 2026
14	Newterra	Strong evidence	Coraopolis, PA, United StatesHQ checked Sep 17, 2026	201-500	185 contacts →
	Strong 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 17, 2026
15	R360 Environmental Solutions, LLC	Indirect evidence	The Woodlands, TX, United StatesHQ checked Sep 17, 2026	1,001-5,000	166 contacts →
	Indirect evidence “R360 is the nation's leading provider of oilfield waste management solutions.” Source: RevenueBase Database · checked Sep 17, 2026
16	Bosque Systems, LLC	Strong evidence	Fort Worth, TX, United StatesHQ checked Sep 17, 2026	51-200	155 contacts →
	Strong evidence “At Bosque Systems, we understand the importance of providing customized water management solutions to our customers, oil and gas operators.” Source: RevenueBase Database · checked Sep 17, 2026
17	Tomorrow Water	Strong evidence	Anaheim, CA, United StatesHQ checked Sep 17, 2026	51-200	133 contacts →
	Strong evidence “Tomorrow Water is an innovative environmental solutions company specializing in both wastewater and organic waste treatment.” Source: RevenueBase Database · checked Sep 17, 2026
18	Aureus Energy Services INC	Indirect evidence	Southlake, TX, United StatesHQ checked Sep 17, 2026	201-500	128 contacts →
	Indirect evidence “Aureus Energy is a technology-enabled, fully integrated water company serving the Permian Basin.” Source: RevenueBase Database · checked Sep 17, 2026
19	Jmac Resources, INC	Indirect evidence	Williston, ND, United StatesHQ checked Sep 17, 2026	201-500	128 contacts →
	Indirect evidence “JMAC Resources provides water management, environmental solutions, and well-site construction services to E&P operators in North America.” Source: RevenueBase Database · checked Sep 17, 2026
20	Merichem Caustic Services	Indirect evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	n/a	113 contacts →
	Indirect evidence “Merichem® provides spent caustic handling services.” Source: RevenueBase Database · checked Sep 17, 2026
21	Komline	Indirect evidence	Peapack, NJ, United StatesHQ checked Sep 17, 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 17, 2026
22	USP Technologies	Strong evidence	Glen Allen, VA, United StatesHQ checked Sep 17, 2026	51-200	110 contacts →
	Strong evidence “USP Technologies provides performance-driven, full-service environmental treatment programs to help purify water, wastewater, soil and air.” Source: RevenueBase Database · checked Sep 17, 2026
23	XRI	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 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 17, 2026
24	World Water Works, INC	Strong evidence	Oklahoma City, OK, United StatesHQ checked Sep 17, 2026	51-200	97 contacts →
	Strong 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 17, 2026
25	Prochem INC	Indirect evidence	Elliston, VA, United StatesHQ checked Sep 17, 2026	51-200	95 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 17, 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: oil and gas wastewater treatment 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 oil and gas wastewater treatment companies.
Partial evidence: Its own public description names part of oil and gas wastewater treatment companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name oil and gas wastewater treatment 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 547 oil and gas wastewater treatment companies based in the United States

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Oil and gas wastewater treatment companies based in the United States at a glance

As of Sep 17, 2026

29.5%Verified-email coverage

31.6Average contacts per company

11-50Median size (employees)

9.3%Largest-city concentration · Houston

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

197

11-50

217

51-200

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 547 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 oil and gas wastewater treatment 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 “oil and gas wastewater treatment 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 oil and gas wastewater treatment 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 oil and gas wastewater treatment 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, 5,107 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 17, 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.

Oil and gas wastewater treatment companies by metro

Oil and gas wastewater treatment companies in Houston51

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 oil and gas wastewater treatment 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 oil and gas wastewater treatment companies are there based in the United States?

RevenueBase identified 547 oil and gas wastewater treatment 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?

Select Water Solutions, headquartered in Gainesville, tops this list with the largest team on record.

Which city has the most oil and gas wastewater treatment companies?

Houston leads with 51 headquartered companies, followed by Midland (20) and Oklahoma City (9).

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 5,107 verified decision-maker contacts tracked across these 547 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 17, 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.