Company lists · Data refreshed September 2026
Top 25 Oil water separation companies based in the United States
RevenueBase identified 262 oil water separation companies headquartered in the United States as of September 2026 and tracks 6,566 professional contacts across them, including 1,516 with verified work emails. Houston is the largest hub.
This list covers oil water separation 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 20, 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.
The 25 largest oil water separation companies based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 499 contacts → | ||||
Partial evidence “CETCO Energy Services (CETCO) specializes in treating complex fluids for offshore oil and gas operators.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 2 | 255 contacts → | ||||
Partial evidence “Pall Corporation is a global leader in filtration, separation and purification.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 3 | 196 contacts → | ||||
Indirect evidence “BOS Solutions (BOS) is a full service provider of solutions for drilling fluids treatment and recovery.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 4 | 144 contacts → | ||||
Indirect evidence “PECO is part of Parker Hannifin, Industrial Process Filtration Division.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 5 | 126 contacts → | ||||
Partial evidence “JWC Environmental, a Sulzer Company, is a global leader in solids reduction, separation and removal systems for customers in a broad range of municipal and industrial applications.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 6 | 113 contacts → | ||||
Partial 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 20, 2026Thanks. The Data Team will review it. | |||||
| 7 | 82 contacts → | ||||
Strong evidence “At SAMCO Technologies, Inc, we provide cutting-edge water, wastewater, and process separation solutions for some of the world’s most demanding industries, including power…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 8 | 80 contacts → | ||||
Partial evidence “Trucent is a leader in the field of fluid separation solutions, specializing in advanced centrifuge technologies and services.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 9 | 80 contacts → | ||||
Partial evidence “At Hydro-Dyne® Engineering we take great pride in our products and services as well as our ability to provide equipment for a variety of water and wastewater screen applications.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 10 | 73 contacts → | ||||
Indirect evidence “We came together from a number of different, generally large oilfield service companies, with hopes of changing the status quo.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 11 | 67 contacts → | ||||
Partial evidence “Duperon is the leader in preliminary liquids/solids separation technologies and provides technologies for coarse screening, fine screening, low flow screening, ultra screening…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 12 | 59 contacts → | ||||
Strong evidence “Established in WaterTectonics designs, manufactures, deploys and services integrated water treatment solutions for clients in oil & gas, mining, industrial and construction…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 13 | 57 contacts → | ||||
Strong evidence “We provide drilling fluids and solids separation services, including dewatering, desludging, and water remediation to the environmental and energy industries across the United…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 14 | 53 contacts → | ||||
Partial evidence “Elastec is the largest 100% employee-owned manufacturer of oil spill and environmental equipment in the world.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 15 | 52 contacts → | ||||
Indirect evidence “KSW's fluid handling equipment and superior service, on your location, protect your people and the environment while maximizing results and minimizing footprint for a positive and…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 16 | 51 contacts → | ||||
Indirect evidence “Since 1987, Filtration Technology Corporation® (FTC) has built a reputation for developing and delivering innovative products at the forefront of filtration technology.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 17 | 44 contacts → | ||||
Indirect evidence “ProSep is the industry-leading technology and services provider of choice for integrated process solutions to the global energy industry.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 18 | 43 contacts → | ||||
Strong evidence “DAVCO is a North American leader in fuel filtration and water separation solutions.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 19 | 43 contacts → | ||||
Indirect evidence “The world of industrial filtration is constantly evolving alongside the industries that rely on it.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 20 | 42 contacts → | ||||
Partial evidence “ORION Water Solutions is composed of a group of industry proven water treatment engineers, automation experts, field operators, and technicians who have treated over 1 billion…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 21 | 41 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 22 | 40 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 23 | 40 contacts → | ||||
Indirect evidence “Process Instruments was founded in 1988.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 24 | 39 contacts → | ||||
Partial evidence “Amiad USA, Aslan technologies and PEP Filters are the North American subsidiaries of Amiad Water Systems, Inc.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 25 | 35 contacts → | ||||
Strong evidence “Hondo Resources is proud to be a leading oil and gas company offering top-notch services in the water industry.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
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 water separation 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 water separation companies.
- Partial evidence
- Its own public description names part of oil water separation companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name oil water separation 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 262 oil water separation companies based in the United States
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Oil water separation companies based in the United States at a glance
As of Sep 20, 2026Companies by employee count
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 262 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 water separation 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 water separation 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 water separation 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 water separation 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, 1,516 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 20, 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 water separation companies by metro
- Oil water separation companies in Houston29
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 water separation 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 water separation companies are there based in the United States?
RevenueBase identified 262 oil water separation 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?
Cetco Energy Services, headquartered in Houston, tops this list with the largest team on record.
Which city has the most oil water separation companies?
Houston leads with 29 headquartered companies, followed by Midland (6) and Denver (5).
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 1,516 verified decision-maker contacts tracked across these 262 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 20, 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.
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